(153201) 2000 WO107

(153201) 2000 WO₁₀₇ is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Aten group with a very well determined orbit.^[1] It was discovered on 29 November 2000, by astronomers of the Lincoln Near-Earth Asteroid Research (LINEAR) at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.^[2] It is a contact binary.^[4]

(153201) 2000 WO₁₀₇

Goldstone radar images showing the two lobes of contact binary 2000 WO107.
Discovery[1]
Discovered by	LINEAR
Discovery site	Lincoln Lab's ETS
Discovery date	29 November 2000
Designations
MPC designation	(153201) 2000 WO107
Alternative designations	2000 WO107
Minor planet category	Aten · NEO · PHA[1][2]
Orbital characteristics[1]
Epoch 2020-May-31 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	20.0 yr (7,304 days)
Aphelion	1.6231 AU
Perihelion	0.2000 AU
Semi-major axis	0.9115 AU
Eccentricity	0.7807
Orbital period (sidereal)	0.87 yr (318 days)
Mean anomaly	206.45°
Mean motion	1° 7m 57.72s / day
Inclination	7.7703°
Longitude of ascending node	69.252°
Time of perihelion	13 October 2020
Argument of perihelion	213.72°
Earth MOID	0.0031 AU (460 thousand km; 1.2 LD)
Physical characteristics
Mean diameter	0.510±0.083 km[3]
Synodic rotation period	4.8 hours[4]
Geometric albedo	0.129±0.058[3]
Spectral type	SMASS = X[1]
Absolute magnitude (H)	19.3[1]

Orbit

The orbit of this potentially hazardous asteroid (PHA) has been well-established with 20 years of observations. It orbits from inside the orbit of Mercury out to the orbit of Mars. It makes close approaches to all of the inner planets.^[1]

2020

The asteroid came to perihelion on 13 October 2020^[1] when it passed the Sun going 88 kilometers per second (320,000 kilometers per hour).^[a] The asteroid was not more than 60 degrees from the Sun until 26 November 2020 and was observed by Goldstone radar on 27 November 2020.^[4] On 29 November 2020 the asteroid passed 0.02876 AU (4.302 million km; 11.19 LD) from Earth.^[1] Even the 2018 orbit solution had a known accuracy of roughly ±150 km for the close approach. With the radar observations the close approach distance is known with an accuracy of roughly ±5 km.

2140

This asteroid will pass 0.00162 AU (242 thousand km; 0.63 LD) from Earth on 1 December 2140.^[1] The 2140 close approach distance is known with an accuracy of roughly ±1000 km. For comparison, the distance to the Moon is about 0.0026 AU (384,400 km).

The Jupiter Tisserand invariant, used to distinguish different kinds of orbits, is 6.228.^[1]

History of close approaches of large near-Earth objects since 1908 ^(A)

PHA	Date	Approach distance in lunar distances			Abs. mag (H)	Diameter (C) (m)	Ref (D)
		Nominal(B)	Minimum	Maximum
(152680) 1998 KJ9	1914-12-31	0.606	0.604	0.608	19.4	279–900	data
(458732) 2011 MD5	1918-09-17	0.911	0.909	0.913	17.9	556–1795	data
(163132) 2002 CU11	1925-08-30	0.903	0.901	0.905	18.5	443–477	data
69230 Hermes	1937-10-30	1.926	1.926	1.927	17.5	700-900[5]	data
69230 Hermes	1942-04-26	1.651	1.651	1.651	17.5	700-900[5]	data
2017 NM6	1959-07-12	1.89	1.846	1.934	18.8	580–1300	data
(27002) 1998 DV9	1975-01-31	1.762	1.761	1.762	18.1	507–1637	data
2002 NY40	2002-08-18	1.371	1.371	1.371	19.0	335–1082	data
2004 XP14	2006-07-03	1.125	1.125	1.125	19.3	292–942	data
2015 TB145	2015-10-31	1.266	1.266	1.266	20.0	620-690	data
(137108) 1999 AN10	2027-08-07	1.014	1.010	1.019	17.9	556–1793	data
(153814) 2001 WN5	2028-06-26	0.647	0.647	0.647	18.2	921–943	data
99942 Apophis	2029-04-13	0.0981	0.0963	0.1000	19.7	310–340	data
2017 MB1	2072-07-26	1.216	1.215	2.759	18.8	367–1186	data
2011 SM68	2072-10-17	1.875	1.865	1.886	19.6	254–820	data
(163132) 2002 CU11	2080-08-31	1.655	1.654	1.656	18.5	443–477	data
(416801) 1998 MZ	2116-11-26	1.068	1.068	1.069	19.2	305–986	data
(153201) 2000 WO107	2140-12-01	0.634	0.631	0.637	19.3	427–593	data
(276033) 2002 AJ129	2172-02-08	1.783	1.775	1.792	18.7	385–1242	data
(290772) 2005 VC	2198-05-05	1.951	1.791	2.134	17.6	638–2061	data
(A) This list includes near-Earth approaches of less than 2 lunar distances (LD) of objects with H brighter than 20. (B) Nominal geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400 km). (C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y. (D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD) (E) Color codes:   unobserved at close approach   observed during close approach   upcoming approaches

Physical characteristics

In the SMASS classification, the object's spectral type is that of an X-type.^[1][6] According to the space-based survey by NASA's NEOWISE mission, the asteroid measures 510 meters in diameter and its surface has an albedo of 0.129.^[3]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 2 April 2007.^[7] As of 2018, it has not been named.^[2]

See also

• 2002 NY40
• 2014 HQ124
• (388188) 2006 DP14
• (53319) 1999 JM8

Notes

1. v = 42.1219 √1/r − 0.5/a, where r is the distance from the Sun, and a is the major semi-axis. Objects move fastest at perihelion and slowest at aphelion.