(163899) 2003 SD220

(163899) 2003 SD220
Radar image of 2003 SD220 from Arecibo Observatory on 16 December 2018
Discovery[1][2]
Discovered byLONEOS
Discovery siteAnderson Mesa Stn.
Discovery date29 September 2003
Designations
(163899) 2003 SD220
2003 SD220 · 2000 AD229
NEO · PHA · Aten[1][2]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc15.96 yr (5,828 days)
Aphelion1.0019 AU
Perihelion0.6533 AU
0.8276 AU
Eccentricity0.2106
0.75 yr (275 days)
322.67°
1° 18m 33.12s / day
Inclination8.4591°
274.05°
326.47°
Earth MOID0.0174 AU · 6.8 LD
Physical characteristics
0.80±0.02 km[3]
1.03 km (calculated)[4]
285±5 h[5][a]
11.9±0.2 days
0.20 (assumed)[4]
0.31±0.04[3]
S (assumed)[4]
13.5 (2021 peak)
17.3[1][4] · 17.36[3]

(163899) 2003 SD220 is a sub-kilometer asteroid and tumbling slow rotator, classified as near-Earth object and potentially hazardous asteroid of the Aten group, which orbit the Sun between Venus and Earth. Its orbital period of 0.75 years means that it orbits the Sun about 4 times for every 3 of the Earth. It was discovered on 29 September 2003, by astronomers of the Lowell Observatory Near-Earth-Object Search at Anderson Mesa Station near Flagstaff, Arizona.[2]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Nugent-2016 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Warner-2016e was invoked but never defined (see the help page).


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