List of asteroid close approaches to Earth in 2023

Below is the list of asteroids that have come close to Earth in 2023.

Asteroids which came closer to Earth than the Moon in 2023 by time of discovery

After closest approach: 62 (53.9%)   < 24 hours before: 13 (11.3%)   up to 7 days before: 37 (32.2%)   > one week before: 2 (1.7%)   > 7 weeks before: 0 (0.0%)   > one year before: 1 (0.9%) Other years 2021, 2022, 2023, 2024, 2025

Asteroids which came closer to Earth than the Moon in 2023 by discoverer

G96 Mt. Lemmon Survey: 38 (32.5%)   703 Catalina Sky Survey: 18 (15.4%)   F51 Pan-STARRS 1: 13 (11.1%)   F52 Pan-STARRS 2: 12 (10.3%)   K88 GINOP-KHK, Piszkesteto: 6 (5.1%)   P07 SST, HEH Station: 5 (4.3%)   M22 ATLAS South Africa: 5 (4.3%)   W94 MAP, San Pedro de Atacama: 4 (3.4%)   W68 ATLAS Chile: 3 (2.6%)   L51 Gennadiy Borisov: 2 (1.7%)   I41 Palomar Mountain--ZTF: 1 (0.9%)   950 La Palma: 1 (0.9%)   G03 Capricornus Obs., Csokako: 1 (0.9%)   V00 Kitt Peak-Bok: 1 (0.9%)   I52 Steward Obs., Mt. Lemmon: 1 (0.9%)   N87 Nanshan Station, Xinjiang Obs.: 1 (0.9%)   U74 JPL SynTrack RT 2: 1 (0.9%)   T05 ATLAS-HKO, Haleakala: 4 (3.4%)

Timeline of known close approaches less than one lunar distance from Earth

A list of known near-Earth asteroid close approaches less than 1 lunar distance (0.0025696 AU (384,410 km; 238,860 mi)) from Earth in 2023, based on the close approach database of the Center for Near-Earth Object Studies (CNEOS).^[1]

For reference, the radius of Earth is about 0.0000426 AU (0.0166 LD; 6,370 km; 3,960 mi). Geosynchronous satellites have an orbit with semi-major axis length of 0.000282 AU (0.110 LD; 42,200 km; 26,200 mi).

The closest approach of Earth by an asteroid in 2023 was that of 2023 BU, an asteroid with a diameter of 3.1–6.9 m (10–23 ft), at 9,967 km (6,193 mi; 6.663×10⁻⁵ AU; 0.02593 LD) from the center of the Earth, or about 3,600 km (2,200 mi) above its surface.^[2] The largest asteroid to pass within 1 LD of Earth in 2023 was 2023 DZ2 at 37–83 m (121–272 ft) in diameter, for an absolute magnitude of 24.3.^[3] The fastest asteroid to pass within 1 LD of Earth in 2023 was 2023 TK₁₅ that passed Earth with a velocity with respect to Earth of 21.95 km/s (49,100 mph),^[4] while the slowest bypass within lunar distance was that of 2023 XQ₁₆ at a velocity with respect to Earth of 3.16 km/s (7,100 mph).^[5]

As most asteroids passing within a lunar distance are less than 40 meters in diameter, they generally are not detected until they are within several million kilometres of Earth. Objects coming from the direction of the Sun may not be publicly announced until a few days after closest approach. For example, 2023 AC₁ was first imaged six hours after closest approach, then confirmed by other observations, but not officially announced until 3.5 days after closest approach.^[6] 2023 MD₄ that approached from the direction of the Sun was not first observed until 3.6 days after closest approach.^{[note 1]} The largest asteroid on this list that is risk–listed is 2023 SM₅ at about 17 meters in diameter with a 3.5-day observation arc and a 1:91000 chance of Earth impact on 24 September 2118.^[7]

The CNEOS database of close approaches lists some close approaches a full orbit or more before the discovery of the object, derived by orbit calculation. The list below only includes close approaches that are evidenced by observations, thus the pre-discovery close approaches would only be included if the object was found by precovery, but there was no such close approach in 2023.

This list and relevant databases do not consider impacts as close approaches, thus this list does not include 2023 CX1, an asteroid which was predicted to impact on Earth and burned up in its atmosphere, as well as several more objects that collided with Earth's atmosphere in 2023 which weren't discovered in advance, but were observed visually or recorded by infrasound sensors designed to detect detonation of nuclear devices.^[8]

     Rows highlighted red indicate objects which were not discovered until after closest approach

     Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach

     Rows highlighted green indicate objects discovered more than one week before closest approach

     Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach

     Rows highlighted blue indicate objects discovered more than one year before closest approach
(i.e. objects successfully cataloged on a previous orbit, rather than being detected during final approach)

Date of closest approach	Discovery[note 2]	Object	Nominal geocentric distance[note 3]	Uncertainty region (3-sigma)	Approx. size (m)	(H) (abs. mag.)	Closer approach to Moon [note 4]
2023-01-12[9]	2023-01-13 G96 Mt. Lemmon Survey[10]	2023 AC1	243,450 km (151,300 mi; 0.001627 AU; 0.6333 LD)	± 1,085 km (674 mi)	4.2–9.5	29.0	—
2023-01-12[11]	2023-01-13 703 Catalina Sky Survey[12]	2023 AV	15,551 km (9,663 mi; 0.0001040 AU; 0.04045 LD)	± 148 km (92 mi)	2.0–4.4	30.7	—
2023-01-15[13]	2023-01-15 P07 SST, HEH Station[14]	2023 AN6	97,977 km (60,880 mi; 0.0006549 AU; 0.2549 LD)	± 1,153 km (716 mi)	2.0–4.4	30.6	?
2023-01-21[15]	2023-01-22 F52 Pan-STARRS 2[16]	2023 BY2	253,287 km (157,400 mi; 0.001693 AU; 0.6589 LD)	± 204 km (127 mi)	3.4–7.5	29.5	✓
2023-01-25[17]	2023-01-27 G96 Mt. Lemmon Survey[18]	2023 BX5	335,316 km (208,400 mi; 0.002241 AU; 0.8723 LD)	± 643 km (400 mi)	5.5–12	28.4	—
2023-01-25[19]	2023-01-18 F52 Pan-STARRS 2[20]	2023 BL1	224,640 km (139,600 mi; 0.001502 AU; 0.5844 LD)	± 232 km (144 mi)	15–34	26.2	—
2023-01-26[21]	2023-01-24 F52 Pan-STARRS 2[22]	2023 BL2	370,777 km (230,400 mi; 0.002478 AU; 0.9646 LD)	± 474 km (295 mi)	4.0–8.9	29.1	—
2023-01-27[2]	2023-01-21 L51 Gennadiy Borisov[23]	2023 BU	9,967 km (6,193 mi; 6.663×10−5 AU; 0.02593 LD)	± 0 km (0 mi)	3.1–6.9	29.7	—
2023-01-27[24]	2023-01-26 G96 Mt. Lemmon Survey[25]	2023 BZ3	281,240 km (174,800 mi; 0.001880 AU; 0.7316 LD)	± 755 km (469 mi)	4.1–9.1	29.1	—
2023-01-30[26]	2023-02-01 M22 ATLAS South Africa[27]	2023 CK	105,221 km (65,380 mi; 0.0007034 AU; 0.2737 LD)	± 230 km (140 mi)	10–23	27.0	—
2023-01-30[28]	2023-01-29 K88 GINOP-KHK, Piszkesteto[29]	2023 BJ7	370,808 km (230,400 mi; 0.002479 AU; 0.9646 LD)	± 509 km (316 mi)	4.7–11	28.8	✓[note 5]
2023-02-09[30]	2023-02-12 G96 Mt. Lemmon Survey[31]	2023 CG4	274,611 km (170,600 mi; 0.001836 AU; 0.7144 LD)	± 5,022 km (3,121 mi)	3.8–8.5	29.2	—
2023-02-25[32]	2023-02-24 K88 GINOP-KHK, Piszkesteto[33]	2023 DR	75,888 km (47,150 mi; 0.0005073 AU; 0.1974 LD)	± 43 km (27 mi)	2.8–6.2	29.9	—
2023-03-09[34]	2023-03-10 703 Catalina Sky Survey[35]	2023 EN	135,777 km (84,370 mi; 0.0009076 AU; 0.3532 LD)	± 185 km (115 mi)	6.4–14	28.1	—
2023-03-12[36]	2023-03-14 G96 Mt. Lemmon Survey[37]	2023 ET2	157,216 km (97,690 mi; 0.001051 AU; 0.4090 LD)	± 3,158 km (1,962 mi)	2.1–4.6	30.6	—
2023-03-17[38]	2023-03-13 M22 ATLAS South Africa[39]	2023 EY	239,565 km (148,900 mi; 0.001601 AU; 0.6232 LD)	± 38 km (24 mi)	12–26	26.8	—
2023-03-18[40]	2023-03-18 P07 SST, HEH Station[41]	2023 FX48	222,903 km (138,500 mi; 0.001490 AU; 0.5799 LD)	± 9,082 km (5,643 mi)	1.4–3.1	31.4	?
2023-03-19[42]	2023-03-17 I41 Palomar Mountain--ZTF[43]	2023 FO	345,284 km (214,500 mi; 0.002308 AU; 0.8982 LD)	± 618 km (384 mi)	3.4–7.7	29.4	—
2023-03-20[44]	2023-03-20 P07 SST, HEH Station[45]	2023 FZ48	179,956 km (111,800 mi; 0.001203 AU; 0.4681 LD)	± 1,474 km (916 mi)	3.3–7.4	29.5	?
2023-03-25[46]	2023-03-26 F51 Pan-STARRS 1[47]	2023 FN6	227,368 km (141,300 mi; 0.001520 AU; 0.5915 LD)	± 426 km (265 mi)	4.0–9.0	29.1	—
2023-03-25[3]	2023-02-27 950 La Palma[48]	2023 DZ2	174,644 km (108,500 mi; 0.001167 AU; 0.4543 LD)	± 1 km (0.62 mi)	37–83	24.3	—
2023-03-30[49]	2023-03-28 G96 Mt. Lemmon Survey[50]	2023 FH7	165,363 km (102,800 mi; 0.001105 AU; 0.4302 LD)	± 299 km (186 mi)	4.6–10	28.8	—
2023-04-11[51]	2023-04-11 K88 GINOP-KHK, Piszkesteto[52]	2023 GQ	133,880 km (83,190 mi; 0.0008949 AU; 0.3483 LD)	± 143 km (89 mi)	5.5–12	28.4	—
2023-04-11[53]	2023-04-14 F52 Pan-STARRS 2[54]	2023 GP3	259,165 km (161,000 mi; 0.001732 AU; 0.6742 LD)	± 910 km (570 mi)	5.1–11	28.6	—
2023-04-14[55]	2023-04-16 W68 ATLAS Chile[56]	2023 HE	307,047 km (190,800 mi; 0.002052 AU; 0.7988 LD)	± 591 km (367 mi)	7.7–17	27.7	—
2023-04-15[57]	2023-04-16 G96 Mt. Lemmon Survey[58]	2023 HZ	287,201 km (178,500 mi; 0.001920 AU; 0.7471 LD)	± 1,155 km (718 mi)	4.1–9.1	29.1	—
2023-04-17[59]	2023-04-16 G96 Mt. Lemmon Survey[60]	2023 HB	195,112 km (121,200 mi; 0.001304 AU; 0.5076 LD)	± 753 km (468 mi)	2.1–4.8	30.5	—
2023-04-17[61]	2023-04-17 P07 SST, HEH Station[62]	2023 HW39	241,880 km (150,300 mi; 0.001617 AU; 0.6292 LD)	± 2,899 km (1,801 mi)	1.1–2.4	32.0	?
2023-04-18[63]	2023-04-16 F52 Pan-STARRS 2[64]	2023 HH	143,801 km (89,350 mi; 0.0009613 AU; 0.3741 LD)	± 108 km (67 mi)	4.3–9.6	29.0	—
2023-04-18[65]	2023-04-17 G96 Mt. Lemmon Survey[66]	2023 HT	177,830 km (110,500 mi; 0.001189 AU; 0.4626 LD)	± 150 km (93 mi)	2.7–6.0	30.0	—
2023-04-18[67]	2023-04-17 G96 Mt. Lemmon Survey[68]	2023 HO36	186,803 km (116,100 mi; 0.001249 AU; 0.4860 LD)	± 610 km (380 mi)	2.1–4.6	30.6	?
2023-04-20[69]	2023-04-17 G96 Mt. Lemmon Survey[70]	2023 HK	341,101 km (212,000 mi; 0.002280 AU; 0.8874 LD)	± 150 km (93 mi)	9.7–22	27.2	✓
2023-04-23[71]	2023-04-22 G96 Mt. Lemmon Survey[72]	2023 HW3	209,009 km (129,900 mi; 0.001397 AU; 0.5437 LD)	± 261 km (162 mi)	4.4–9.8	28.9	—
2023-04-30[73]	2023-04-29 G96 Mt. Lemmon Survey[74]	2023 HD7	231,787 km (144,000 mi; 0.001549 AU; 0.6030 LD)	± 244 km (152 mi)	5.1–11	28.6	✓
2023-05-08[75]	2023-05-09 703 Catalina Sky Survey[76]	2023 JO	92,277 km (57,340 mi; 0.0006168 AU; 0.2401 LD)	± 249 km (155 mi)	3.8–8.6	29.2	—
2023-05-09[77]	2023-05-08 703 Catalina Sky Survey[78]	2023 JF	320,322 km (199,000 mi; 0.002141 AU; 0.8333 LD)	± 177 km (110 mi)	7.8–18	27.6	✓
2023-05-12[79]	2023-05-13 G96 Mt. Lemmon Survey[80]	2023 JA3	132,389 km (82,260 mi; 0.0008850 AU; 0.3444 LD)	± 518 km (322 mi)	3.0–6.7	29.7	—
2023-05-17[81]	2023-05-19 G03 Capricornus Observatory, Csokako[82]	2023 KT	166,824 km (103,700 mi; 0.001115 AU; 0.4340 LD)	± 267 km (166 mi)	5.7–13	28.4	—
2023-05-22[83]	2023-05-20 G96 Mt. Lemmon Survey[84]	2023 KS	234,653 km (145,800 mi; 0.001569 AU; 0.6104 LD)	± 317 km (197 mi)	7.8–18	27.6	—
2023-05-27[85]	2023-05-28 703 Catalina Sky Survey[86]	2023 KK4	345,234 km (214,500 mi; 0.002308 AU; 0.8981 LD)	± 1,419 km (882 mi)	8.2–18	27.6	—
2023-05-27[87]	2023-05-28 703 Catalina Sky Survey[88]	2023 KU4	290,726 km (180,600 mi; 0.001943 AU; 0.7563 LD)	± 627 km (390 mi)	6.2–14	28.2	✓
2023-06-07[89]	2023-06-07 703 Catalina Sky Survey[90]	2023 LC	271,328 km (168,600 mi; 0.001814 AU; 0.7058 LD)	± 55 km (34 mi)	4.9–11	28.7	—
2023-06-09[91]	2023-06-10 W68 ATLAS Chile[92]	2023 LS	88,971 km (55,280 mi; 0.0005947 AU; 0.2315 LD)	± 46 km (29 mi)	2.7–6.1	29.9	—
2023-06-13[93]	2023-06-14 G96 Mt. Lemmon Survey[94]	2023 LP1	255,876 km (159,000 mi; 0.001710 AU; 0.6656 LD)	± 494 km (307 mi)	3.1–6.8	29.7	—
2023-06-14[95]	2023-06-10 F52 Pan-STARRS 2[96]	2023 LZ	317,022 km (197,000 mi; 0.002119 AU; 0.8247 LD)	± 407 km (253 mi)	13–30	26.5	—
2023-06-15[97]	2023-06-14 G96 Mt. Lemmon Survey[98]	2023 LM1	110,564 km (68,700 mi; 0.0007391 AU; 0.2876 LD)	± 71 km (44 mi)	5.3–12	28.5	—
2023-06-17[99]	2023-06-15 F52 Pan-STARRS 2[100]	2023 LE2	157,818 km (98,060 mi; 0.001055 AU; 0.4106 LD)	± 80 km (50 mi)	2.6–5.7	30.1	0
2023-06-18[101]	2023-06-18 G96 Mt. Lemmon Survey[102]	2023 MJ20	44,592 km (27,710 mi; 0.0002981 AU; 0.1160 LD)	± 108 km (67 mi)	1.9–4.1	30.8	?
2023-06-20[103]	2023-06-21 F51 Pan-STARRS 1[104]	2023 MB3	157,035 km (97,580 mi; 0.001050 AU; 0.4085 LD)	± 127 km (79 mi)	2.7–5.9	30.0	—
2023-06-20[105]	2023-06-24[note 1] W94 MAP, San Pedro de Atacama[106]	2023 MD4	289,756 km (180,000 mi; 0.001937 AU; 0.7538 LD)	± 528 km (328 mi)	12–26	26.8	—
2023-06-23[107]	2023-06-22 G96 Mt. Lemmon Survey[108]	2023 MW2	123,724 km (76,880 mi; 0.0008270 AU; 0.3219 LD)	± 62 km (39 mi)	2.7–6.0	30.0	—
2023-06-24[109]	2023-06-21 F51 Pan-STARRS 1[110]	2023 ML3	260,454 km (161,800 mi; 0.001741 AU; 0.6776 LD)	± 300 km (190 mi)	5.6–13	28.4	—
2023-06-25[111]	2023-06-21 F51 Pan-STARRS 1[112]	2023 MU2	216,995 km (134,800 mi; 0.001451 AU; 0.5645 LD)	± 23 km (14 mi)	4.0–9.0	29.1	—
2023-07-05[113]	2023-07-08 G96 Mt. Lemmon Survey[114]	2023 NO	381,548 km (237,100 mi; 0.002550 AU; 0.9926 LD)	± 768 km (477 mi)	4.9–11	28.6	—
2023-07-13[115]	2023-07-15 M22 ATLAS South Africa[116]	2023 NT1	100,892 km (62,690 mi; 0.0006744 AU; 0.2625 LD)	± 18 km (11 mi)	26–58	25.0	—
2023-08-18[117]	2023-08-20 K88 GINOP-KHK, Piszkesteto[118]	2023 QY	66,911 km (41,580 mi; 0.0004473 AU; 0.1741 LD)	± 580 km (360 mi)	5.0–11	28.6	—
2023-08-19[119]	2023-08-20 K88 GINOP-KHK, Piszkesteto[120]	2023 QS1	107,145 km (66,580 mi; 0.0007162 AU; 0.2787 LD)	± 113 km (70 mi)	5.0–11	28.6	—
2023-08-20[121]	2023-08-19 F51 Pan-STARRS 1[122]	2023 QR	207,604 km (129,000 mi; 0.001388 AU; 0.5401 LD)	± 241 km (150 mi)	3.7–8.2	29.3	—
2023-09-05[123]	2023-09-08 F51 Pan-STARRS 1[124]	2023 RM16	350,689 km (217,900 mi; 0.002344 AU; 0.9123 LD)	± 543 km (337 mi)	4.4–9.9	28.9	—
2023-09-06[125]	2023-09-06 P07 SST, HEH Station[126]	2023 RF156	362,180 km (225,000 mi; 0.002421 AU; 0.9422 LD)	± 714 km (444 mi)	3.1–7.0	29.7	?
2023-09-07[127]	2023-09-07 G96 Mt. Lemmon Survey[128]	2023 RS	10,361 km (6,438 mi; 6.926×10−5 AU; 0.02695 LD)	± 16 km (9.9 mi)	0.91–2.0	32.3	—
2023-09-07[129]	2023-09-10 W94 MAP, San Pedro de Atacama[130]	2023 RG22	381,766 km (237,200 mi; 0.002552 AU; 0.9931 LD)	± 7,551 km (4,692 mi)	16–35	26.1	—
2023-09-08[131]	2023-09-09 G96 Mt. Lemmon Survey[132]	2023 RY2	189,304 km (117,600 mi; 0.001265 AU; 0.4925 LD)	± 431 km (268 mi)	5.8–13	28.3	—
2023-09-09[133]	2023-09-10 L51 Gennadiy Borisov[134]	2023 RK5	281,889 km (175,200 mi; 0.001884 AU; 0.7333 LD)	± 449 km (279 mi)	4.0–9.0	29.1	—
2023-09-13[135]	2023-09-11 F52 Pan-STARRS 2[136]	2023 RR5	207,382 km (128,900 mi; 0.001386 AU; 0.5395 LD)	± 121 km (75 mi)	4.7–11	28.8	—
2023-09-16[137]	2023-09-18 G96 Mt. Lemmon Survey[138]	2023 SR5	174,519 km (108,400 mi; 0.001167 AU; 0.4540 LD)	± 1,218 km (757 mi)	4.9–11	28.7	—
2023-09-18[139]	2023-09-19 G96 Mt. Lemmon Survey[140]	2023 SC2	173,894 km (108,100 mi; 0.001162 AU; 0.4524 LD)	± 410 km (250 mi)	3.7–8.2	29.3	—
2023-09-20[141]	2023-09-19 G96 Mt. Lemmon Survey[142]	2023 SN1	331,882 km (206,200 mi; 0.002218 AU; 0.8634 LD)	± 389 km (242 mi)	3.6–8.1	29.3	✓
2023-09-20[143]	2023-09-21 703 Catalina Sky Survey[144]	2023 SL5	51,870 km (32,230 mi; 0.0003467 AU; 0.1349 LD)	± 187 km (116 mi)	4.6–10	28.8	—
2023-09-23[145]	2023-09-19 F52 Pan-STARRS 2[146]	2023 SM5	376,207 km (233,800 mi; 0.002515 AU; 0.9787 LD)	± 1,326 km (824 mi)	14–32	26.4	✓
2023-09-24[147]	2023-09-22 M22 ATLAS South Africa[148]	2023 SN8	230,879 km (143,500 mi; 0.001543 AU; 0.6006 LD)	± 2,047 km (1,272 mi)	6.6–15	28.0	?
2023-09-24[149]	2023-09-18 F52 Pan-STARRS 2[150]	2023 SP3	328,649 km (204,200 mi; 0.002197 AU; 0.8550 LD)	± 239 km (149 mi)	12–28	26.6	—
2023-09-25[151]	2023-09-26 K88 GINOP-KHK, Piszkesteto[152]	2023 SH7	53,782 km (33,420 mi; 0.0003595 AU; 0.1399 LD)	± 34 km (21 mi)	1.3–2.8	31.6	—
2023-10-03[153]	2023-10-05 G96 Mt. Lemmon Survey[154]	2023 TY	204,816 km (127,300 mi; 0.001369 AU; 0.5328 LD)	± 729 km (453 mi)	3.9–8.8	29.1	?
2023-10-07[155]	2023-10-06 G96 Mt. Lemmon Survey[156]	2023 TR1	107,778 km (66,970 mi; 0.0007205 AU; 0.2804 LD)	± 96 km (60 mi)	2.9–6.4	29.8	?
2023-10-07[157]	2023-10-05 G96 Mt. Lemmon Survey[158]	2023 TB1	260,902 km (162,100 mi; 0.001744 AU; 0.6787 LD)	± 536 km (333 mi)	3.7–8.2	29.3	?
2023-10-07[159]	2023-10-09 G96 Mt. Lemmon Survey[160]	2023 TK4	203,696 km (126,600 mi; 0.001362 AU; 0.5299 LD)	± 2,225 km (1,383 mi)	4.8–11	28.7	?
2023-10-07[161]	2023-10-09 G96 Mt. Lemmon Survey[162]	2023 TJ4	297,353 km (184,800 mi; 0.001988 AU; 0.7735 LD)	± 604 km (375 mi)	3.6–7.9	29.4	?
2023-10-10[163]	2023-10-11 F51 Pan-STARRS 1[164]	2023 TZ65	179,904 km (111,800 mi; 0.001203 AU; 0.4680 LD)	± 345 km (214 mi)	3.2–7.0	29.6	?
2023-10-10[165]	2023-10-08 703 Catalina Sky Survey[166]	2023 TM3	165,596 km (102,900 mi; 0.001107 AU; 0.4308 LD)	± 35 km (22 mi)	11–24	26.9	?
2023-10-12[167]	2023-10-07 F51 Pan-STARRS 1[168]	2023 TV3	83,294 km (51,760 mi; 0.0005568 AU; 0.2167 LD)	± 91 km (57 mi)	7.5–17	27.8	?
2023-10-12[169]	2023-10-15 F51 Pan-STARRS 1[170]	2023 TU15	291,593 km (181,200 mi; 0.001949 AU; 0.7586 LD)	± 643 km (400 mi)	3.9–8.8	29.2	?
2023-10-14[171]	2023-10-11 G96 Mt. Lemmon Survey[172]	2023 TD7	171,460 km (106,500 mi; 0.001146 AU; 0.4460 LD)	± 199 km (124 mi)	3.8–8.6	29.2	?
2023-10-14[173]	2023-10-15 703 Catalina Sky Survey[174]	2023 TO17	54,346 km (33,770 mi; 0.0003633 AU; 0.1414 LD)	± 54 km (34 mi)	3.1–6.9	29.7	?
2023-10-14[175]	2023-10-17 V00 Kitt Peak-Bok[176]	2023 UY	155,572 km (96,670 mi; 0.001040 AU; 0.4047 LD)	± 324 km (201 mi)	2.7–6.1	30.0	?
2023-10-15[177]	2023-10-16 703 Catalina Sky Survey[178]	2023 UB	58,638 km (36,440 mi; 0.0003920 AU; 0.1525 LD)	± 43 km (27 mi)	2.6–5.8	30.1	?
2023-10-18[179]	2023-10-17 F52 Pan-STARRS 2[180]	2023 UX2	202,983 km (126,100 mi; 0.001357 AU; 0.5280 LD)	± 193 km (120 mi)	3.3–7.5	29.5	?
2023-10-18[181]	2023-10-20 F51 Pan-STARRS 1[182]	2023 UH9	104,456 km (64,910 mi; 0.0006982 AU; 0.2717 LD)	± 502 km (312 mi)	1.8–4.1	30.8	?
2023-10-20[183]	2023-10-21 F51 Pan-STARRS 1[184]	2023 UR10	13,949 km (8,668 mi; 9.324×10−5 AU; 0.03629 LD)	± 55 km (34 mi)	2.7–6.1	30.0	?
2023-10-20[4]	2023-10-14 G96 Mt. Lemmon Survey[185]	2023 TK15	379,647 km (235,900 mi; 0.002538 AU; 0.9876 LD)	± 43 km (27 mi)	18–39	25.9	?
2023-11-02[186]	2023-11-01 I52 Steward Observatory, Mt. Lemmon Station[187]	2023 VA	26,760 km (16,630 mi; 0.0001789 AU; 0.06961 LD)	± 8 km (5.0 mi)	5.1–11	28.6	?
2023-11-02[188]	2023-11-03 703 Catalina Sky Survey[189]	2023 VG	114,161 km (70,940 mi; 0.0007631 AU; 0.2970 LD)	± 63 km (39 mi)	5.9–13	28.3	?
2023-11-04[190]	2023-11-04 703 Catalina Sky Survey[191]	2023 VE1	34,493 km (21,430 mi; 0.0002306 AU; 0.08973 LD)	± 27 km (17 mi)	2.4–5.4	30.2	?
2023-11-04[192]	2023-11-05 703 Catalina Sky Survey[193]	2023 VO1	78,132 km (48,550 mi; 0.0005223 AU; 0.2033 LD)	± 101 km (63 mi)	3.2–7.1	29.6	?
2023-11-07[194]	2023-11-03 F52 Pan-STARRS 2[195]	2023 VS	368,141 km (228,800 mi; 0.002461 AU; 0.9577 LD)	± 328 km (204 mi)	2.9–6.4	29.8	?
2023-11-07[196]	2023-11-05 N87 Nanshan Station, Xinjiang Observatory[197]	2023 VB2	32,770 km (20,360 mi; 0.0002191 AU; 0.08525 LD)	± 17 km (11 mi)	6.0–13	28.2	?
2023-11-07[198]	2023-11-08 G96 Mt. Lemmon Survey[199]	2023 VP3	132,278 km (82,190 mi; 0.0008842 AU; 0.3441 LD)	± 26 km (16 mi)	3.4–7.5	29.5	?
2023-11-07[200]	2023-11-06 G96 Mt. Lemmon Survey[201]	2023 VD2	56,171 km (34,900 mi; 0.0003755 AU; 0.1461 LD)	± 35 km (22 mi)	2.6–5.7	30.1	?
2023-11-08[202]	2023-11-09 M22 ATLAS South Africa[203]	2023 VC4	384,221 km (238,700 mi; 0.002568 AU; 0.9995 LD)	± 232 km (144 mi)	11–24	27.0	?
2023-11-10[204]	2023-11-08 G96 Mt. Lemmon Survey[205]	2023 VD4	144,665 km (89,890 mi; 0.0009670 AU; 0.3763 LD)	± 433 km (269 mi)	6.1–14	28.2	?
2023-11-17[206]	2023-11-16 W68 ATLAS Chile, Rio Hurtado[207]	2023 WA	27,379 km (17,010 mi; 0.0001830 AU; 0.07122 LD)	± 13 km (8.1 mi)	5.3–12	28.5	?
2023-11-19[208]	2023-11-22 703 Catalina Sky Survey[209]	2023 WE2	242,747 km (150,800 mi; 0.001623 AU; 0.6315 LD)	± 427 km (265 mi)	10–23	27.0	?
2023-11-20[210]	2023-11-21 703 Catalina Sky Survey[211]	2023 WZ1	157,393 km (97,800 mi; 0.001052 AU; 0.4094 LD)	± 159 km (99 mi)	4.3–9.7	28.9	?
2023-11-30[212]	2023-12-06 703 Catalina Sky Survey[213]	2023 XG4	175,493 km (109,000 mi; 0.001173 AU; 0.4565 LD)	± 544 km (338 mi)	7.1–16	27.9	?
2023-12-02[214]	2023-12-03 G96 Mt. Lemmon Survey[215]	2023 XJ	105,643 km (65,640 mi; 0.0007062 AU; 0.2748 LD)	± 140 km (87 mi)	4.9–11	28.7	?
2023-12-03[216]	2023-12-05 U74 – JPL SynTrack Robotic Telescope 2, Auberry[217]	2023 XL2	110,908 km (68,920 mi; 0.0007414 AU; 0.2885 LD)	± 163 km (101 mi)	2.5–5.5	30.2	?
2023-12-06[218]	2023-12-04 F51 Pan-STARRS 1[219]	2023 XJ1	98,205 km (61,020 mi; 0.0006565 AU; 0.2555 LD)	± 86 km (53 mi)	7.9–18	27.6	?
2023-12-08[220]	2023-12-11 W94 MAP, San Pedro de Atacama[221]	2023 XQ10	222,851 km (138,500 mi; 0.001490 AU; 0.5797 LD)	± 1,349 km (838 mi)	14–31	26.4	?
2023-12-08[222]	2023-12-09 T05 ATLAS-HKO, Haleakala[223]	2023 XU5	370,845 km (230,400 mi; 0.002479 AU; 0.9647 LD)	± 263 km (163 mi)	9.7–22	27.2	?
2023-12-09[224]	2023-12-10 W94 MAP, San Pedro de Atacama[225]	2023 XW5	74,186 km (46,100 mi; 0.0004959 AU; 0.1930 LD)	± 46 km (29 mi)	4.9–11	28.7	?
2023-12-09[226]	2023-12-03 G96 Mt. Lemmon Survey[227]	2023 XB4	296,661 km (184,300 mi; 0.001983 AU; 0.7717 LD)	± 294 km (183 mi)	6.1–14	28.2	?
2023-12-13[5]	2023-12-15 703 Catalina Sky Survey[228]	2023 XQ16	126,364 km (78,520 mi; 0.0008447 AU; 0.3287 LD)	± 96 km (60 mi)	2.0–4.6	30.6	?
2023-12-23[229]	2023-12-17 G96 Mt. Lemmon Survey[230]	2023 YP	356,680 km (221,600 mi; 0.002384 AU; 0.9279 LD)	± 850 km (530 mi)	6.7–15	28.0	?
2023-12-23[231]	2020-12-23[232]	2020 YO3	215,222 km (133,700 mi; 0.001439 AU; 0.5599 LD)	± 7 km (4.3 mi)	30–67	24.7	?
2023-12-31[233]	2024-01-02 F51 Pan-STARRS 1[234]	2024 AL	357,800 km (222,300 mi; 0.002392 AU; 0.9308 LD)	± 511 km (318 mi)	7.7–17	27.7	?

Warning times by size

This sub-section visualises the warning times of the close approaches listed in the above table, depending on the size of the asteroid. The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness.^[1]

Absolute magnitude H ≥ 30 (smallest)

Silhouette of man standing and facing forward

(size of a person for comparison)

Absolute magnitude 30 > H ≥ 29

Absolute magnitude 29 > H ≥ 28

Absolute magnitude 28 > H ≥ 27

Absolute magnitude 27 > H ≥ 26

Absolute magnitude 26 > H ≥ 25

Absolute magnitude 25 > H (largest)

•   After closest approach: 0 (0.0%)
•   < 24 hours before: 0 (0.0%)
•   up to 7 days before: 0 (0.0%)
•   > one week before: 1 (50.0%)
•   > 7 weeks before: 0 (0.0%)
•   > one year before: 1 (50.0%)

Notes

1. 2023 MD₄ came to perihelion on 20 May 2023 and approached from the direction of the Sun. It made Earth closest approach at 20 June 2023 18:10 UT and was discovered 85.4 hours (3.56 d) later at 24 June 2023 07:36 UT.
2. Discovery date (first reported image), and if the object was confirmed and previously undiscovered, the discoverer
3. Distance from the center of Earth to the center of the object. See the NASA/JPL Solar System Dynamics Glossary: Geocentric. Earth has a radius of approximately 6,400 km (0.0166 LD).
4. Objects that approached closer to the Moon than Earth are marked with a check.
5. 2023 BJ₇ passed 12,884 ± 334 km (8,006 ± 208 mi) from the centerpoint of the Moon around 30 January 2023 13:34 UT. Since the Moon has a radius of about 1,738 km (1,080 mi), it passed approximately 11,146 ± 334 km (6,926 ± 208 mi) from the surface of the Moon.

Beyond 1 LD

Below is an example list of near-Earth asteroids that nominally will pass more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2023. During 2022, over 1,000 asteroids passed within 10 LD (3.8 million km) of Earth.

  Rows highlighted grey indicate a planet or main-belt asteroid

  Rows highlighted green indicate a comet which may have a larger uncertainty region due to non-gravitational forces from outgassing (sublimation).
It is also more difficult to make astrometric measurements of the precise location of the nucleus because it is masked by a fuzzy coma.

  Rows highlighted yellow indicate short arc objects that have not been observed for years and therefore the uncertainty in the approach distance and date are large

  Rows highlighted cyan indicate objects that had a short observation arc with large uncertainties that were recovered and their orbits greatly refined

  Rows highlighted red indicate objects which are risk–listed with a virtual impactor near this date

Object	Size (meters)	Nearest approach (lunar distances)	Date	Ref
2022 YY6	16-35	2.1[note2 1]	2023-01-02	JPL · CAD
2014 LJ	5.3-12	3.9–12.2 (4.7 LD nominal)	2023-01-14?	JPL · CAD
2012 BV13[note2 2]	100-220	12.11[note2 3]	2023-01-16	JPL · CAD
2020 BP	19-43	9.26[note2 4]	2023-01-19	JPL · CAD
C/2022 E3 (ZTF)	≈1,000??	110.5[note2 5]	2023-02-01	JPL · CAD
(367789) 2011 AG5	110–250	4.73[note2 6]	2023-02-03	JPL · CAD
(199145) 2005 YY128	580-1300	11.96[note2 7]	2023-02-16	JPL · CAD
2023 DW	37-82	22.7	2023-02-18	JPL · CAD
2020 DG4[note2 8]	6-14	1.62[note2 9]	2023-02-18	JPL · CAD
(37638) 1993 VB	370-820	16.98[note2 10]	2023-02-21	JPL · CAD
405 Thia (MBA)	109,000	411.5	2023-03-20	JPL
2023 FM	130-280	7.8[note2 11]	2023-04-06	JPL · CAD
364P/PANSTARRS	≈300?	46.98[note2 12]	2023-04-07	JPL · CAD
4486 Mithra	1,850	63.31	2023-04-11	JPL · CAD
(436774) 2012 KY3	540–1200	12.4[note2 13]	2023-04-13	JPL · CAD
2006 HV5	300	6.29[note2 14]	2023-04-26	JPL · CAD
1627 Ivar	9,120	289.6	2023-04-29	JPL
Planet Mercury[note2 15]	—	217.7	2023-05-04	JPL
453 Tea (MBA)	24,000	366.3	2023-05-05	JPL
2012 KP24	14-31	0.19–24 (10 LD nominal)	2023-05-31?	JPL · CAD
2016 LP10[note2 16]	4-8	Impact–600 (245 LD nominal)	2023-06-10?	Nominal
(488453) 1994 XD	600	8.23[note2 17]	2023-06-12	JPL · CAD
2020 DB5	380-850	11.2[note2 18]	2023-06-15	JPL · CAD
(467336) 2002 LT38	200–450	17.32	2023-06-24	JPL · CAD
2023 HO6	180-390	5.3[note2 19]	2023-07-05	JPL · CAD
2019 LH5	210-470	14.89	2023-07-07	JPL · CAD
237P/LINEAR		414.1	2023-07-08	JPL
2018 UY	180-410	7.41	2023-07-12	JPL · CAD
(490684) 2010 LL34	350-780	30.04	2023-07-13	JPL · CAD
C/2021 T4 (Lemmon)		210.6	2023-07-20	JPL
2019 GL5	260	20.82	2023-07-29	JPL · CAD
2006 AD	1585	68.39	2023-07-29	JPL · CAD
Planet Venus[note2 20]	—	112.4	2023-08-13	JPL
4769 Castalia	1,400	42.82	2023-08-22	JPL · CAD
8 Flora (MBA)	147,000	387.1	2023-09-02	JPL
2016 LY48	77-170	5.01[note2 21]	2023-09-16	JPL · CAD
(523598) 2003 ED50	231	19.75	2023-09-20	JPL · CAD
103P/Hartley	≈2,000	148.9[note2 22]	2023-09-26	JPL · CAD
2022 UX1	7-15	1.9–5.2 (3.1 LD nominal)	2023-10-12	JPL · CAD
2021 NT14	245	18.54	2023-10-13	JPL · CAD
1998 HH49	140-320	3.05[note2 23]	2023-10-17	JPL · CAD
4544 Xanthus	1,300	76.10	2023-10-21	JPL · CAD
18 Melpomene (MBA)	140,000	334.2	2023-10-30	JPL
(525229) 2004 UU1	150–330	10.61	2023-10-30	JPL · CAD
(363505) 2003 UC20	1,900	13.66	2023-11-02	JPL · CAD
(164121) 2003 YT1	1,720	23.10	2023-11-03	JPL · CAD
C/2023 H2 (Lemmon)		75[note2 24]	2023-11-10	JPL · CAD
(7350) 1993 VA	1,900	50.36	2023-11-14	JPL · CAD
(341843) 2008 EV5	400	16.4	2023-12-20	JPL · CAD
2020 YO3	30-70	0.5–30 (3.5 LD nominal)	2023-12-23?	JPL · CAD

Notes

1. The uncertainty region for 2022 YY₆ on 2023-Jan-02 was ±6500 km.
2. 2012 BV₁₃ was recovered by WISE in October 2022 and followed up by several observatories in January 2023.
3. The uncertainty region for 2012 BV₁₃ on 2023-Jan-16 was ±103 km.
4. was 0.43–40 (5 LD nominal) before recovery on 14 January 2023 by Pan-STARRS 2
5. The uncertainty region for C/2022 E3 (ZTF) on 2023-Feb-01 was ±500 km.
6. 2011 AG₅ brightened to about apmag 14.2 on 2023-Feb-02.
7. The uncertainty region for 2005 YY₁₂₈ on 2023-Feb-16 was ±10 km. It brightened to about apmag 13.2 on 2023-Feb-14.
8. At the start of the year 2020 DG₄ had the closest known nominal approach to Earth in 2023 at 1.4 LD.
9. was 1.2–11 (1.4 LD nominal) before recovery on 22 February 2023 by ATLAS South Africa
10. The uncertainty region for 1993 VB on 2023-Feb-21 was ±57 km. It brightened to about apmag 14.5 on 2023-Feb-25.
11. The uncertainty region for 2023 FM on 2023-Apr-06 is ±3200 km. It brightened to apmag 14.8 on 2023-Apr-04.
12. The uncertainty region for 364P/PANSTARRS on 2023-Apr-07 is ±47 km.
13. The uncertainty region for 2012 KY₃ on 2023-Apr-13 was ±305 km. It brightened to apmag 14.2 on 2023-Apr-16.
14. The uncertainty region for 2006 HV₅ on 2023-Apr-26 is ±36 km. It brightened to apmag 15.3 on 2023-Apr-24.
15. Mercury also will pass 260.9 LD from Earth on January 8, 244.4 LD from Earth on September 3, and 263.2 LD from Earth on December 23. Mercury makes a closest approach to Earth about every 116 days.
16. The asteroid with the greatest chance of impacting Earth in 2023 is 2016 LP₁₀ (4-meters in diameter) with less than a 1-day observation arc. It has a 1:53,000 chance of impact on 10 June 2023, but is expected to be around 0.63 AU (94 million km; 250 LD) from Earth on that date at a basically undetectable apparent magnitude of 31. Such an impact would be similar to 2008 TC3.
17. The uncertainty region for 1994 XD on 2023-Jun-12 is ±17 km. It is expected to brighten to apmag 13.5 on 2023-Jun-10 and best seen from the Northern hemisphere.
18. The uncertainty region for 2020 DB₅ on 2023-Jun-15 is ±51 km. It is expected to brighten to apmag 13.8 on 2023-Jun-14 and best seen from the Southern hemisphere.
19. The uncertainty region for 2020 HO₆ on 2023-Jul-05 is ±700 km. It is expected to brighten to apmag 13.5 on 2023-Jul-05 and best seen from the Southern hemisphere.
20. For comparison as the closest Venus approach is 2023-Aug-13 at 0.2887 AU (112.4 LD).
21. was 4.3–8.7 (4.3 LD nominal) before recovery on 19 June 2023 by Canada–France–Hawaii Telescope
22. The uncertainty region for 103P/Hartley on 2023-Sep-26 is ±310 km.
23. The uncertainty region for 1998 HH₄₉ on 2023-Oct-17 is ±471 km.
24. The uncertainty region for C/2023 H2 (Lemmon) on 2023-Nov-10 is ±57000 km. It might brighten to magnitude 10, but will stay within 75 degrees of the Sun when brightest.

See also

• List of asteroid close approaches to Earth
• List of asteroid close approaches to Earth in 2022
• List of asteroid close approaches to Earth in 2024
• Asteroid impact prediction