(29075) 1950 DA
Most hazardous risk–listed near-Earth asteroid / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about (29075) 1950 DA?
Summarize this article for a 10 year old
(29075) 1950 DA (provisional designation 1950 DA) is a risk-listed asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.3 kilometers (0.81 miles) in diameter.[4] It once had the highest known probability of impacting Earth.[11] In 2002, it had the highest Palermo rating with a value of 0.17 for a possible collision in 2880.[12] Since that time, the estimated risk has been updated several times. In December 2015, the odds of an Earth impact were revised to 1 in 8,300 (0.012%) with a Palermo rating of −1.42.[11] As of February 2024[update], It is listed on the Sentry Risk Table with the second highest cumulative Palermo rating of −2.05 (impact risk of 1-in-34,000).[13][14] 1950 DA is not assigned a Torino scale rating, because the 2880 date is over 100 years in the future.
Discovery[1] | |
---|---|
Discovered by | Carl A. Wirtanen |
Discovery site | Lick Obs. |
Discovery date | 23 February 1950 |
Designations | |
(29075) 1950 DA | |
1950 DA · 2000 YK66 | |
NEO · Apollo · PHA[1][2] · risk listed | |
Orbital characteristics[2] | |
Epoch 13 September 2023 (JD 2460200.5) | |
Uncertainty parameter 0 | |
Observation arc | 73.61 yr (26,885 d) |
Aphelion | 2.5612 AU |
Perihelion | 0.8351 AU |
1.6982 AU | |
Eccentricity | 0.5082 |
2.213 yr (809 d) | |
45.28° | |
0° 26m 43.44s / day | |
Inclination | 12.17° |
356.65° | |
224.67° | |
Earth MOID | 0.04138 AU (16.109 LD) |
Proper orbital elements[3] | |
Precession of perihelion | 13.655 arcsec / yr |
Precession of the ascending node | −35.824 arcsec / yr |
Physical characteristics | |
Dimensions | 1.39 km × 1.46 km × 1.07 km[4] |
Mean diameter | |
Mass | >4×1012 kg[lower-alpha 1] |
Mean density | >3.5 g/cm3[4] |
2.12160±0.00004 h[4] | |