163899 (2003 SD220)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2094327850 ± 2.00e+00
Semi-major axis (a)0.8278931102 AU ± 3.00e+00
Inclination (i)8.54810646° ± 4.00e+00
Long. of Asc. Node (Ω)273.62717573° ± 5.00e+00
Arg. of Perihelion (ω)327.01925779° ± 6.00e+00
Mean Anomaly (M)291.89854679° ± 4.58e-06
Mean Motion (n)1.3084311461°/day ± 7.11e+00
Perihelion dist (q)0.65450515 AU ± 2.89e+00
Aphelion dist (Q)1.00128107 AU ± 3.99e+00
Orbital Period0.75328861 yr ± 4.09e+00
NGA Modelr2
A22.09664515e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.56
G (slope)0.15
Alternative Designations

2000 AD229

Orbit Solution
SourceIAA
Solution Date2026-04-28
RMS Residual0.291″
Uncertainty0
Orbit TypeAten
MOID0.018230 AU
Observations Used1713
Oppositions8
Arc Total2000-2025
First Observation Used2000-01-07
Last Observation Used2025-01-27
Observations (1943)
Date Type RA Dec Mag Band Observatory
2018-12-10 03:17:34 C 13 05 05.63 +53 31 43.9 q L28
2018-12-10 03:17:47 C 13 05 05.81 +53 31 43.9 q L28
2018-12-10 03:18:00 C 13 05 05.83 +53 31 43.1 q L28
2018-12-10 03:18:13 C 13 05 05.96 +53 31 43.3 q L28
2018-12-10 03:18:26 C 13 05 06.09 +53 31 43.2 q L28
2018-12-10 03:18:39 C 13 05 06.13 +53 31 42.6 q L28
2018-12-10 03:18:52 C 13 05 06.18 +53 31 42.4 q L28
2018-12-10 03:19:05 C 13 05 06.43 +53 31 41.9 q L28
2018-12-10 03:19:18 C 13 05 06.43 +53 31 42.1 q L28
2018-12-10 03:19:31 C 13 05 06.52 +53 31 42.0 q L28
2018-12-10 03:19:45 C 13 05 06.71 +53 31 41.5 q L28
2018-12-10 03:20:11 C 13 05 06.89 +53 31 41.0 q L28
2018-12-10 03:20:24 C 13 05 06.90 +53 31 41.0 q L28
2018-12-10 03:20:50 C 13 05 07.14 +53 31 40.1 q L28
2018-12-10 03:21:03 C 13 05 07.15 +53 31 40.3 q L28
2018-12-10 03:21:16 C 13 05 07.32 +53 31 39.7 q L28
2018-12-10 03:21:29 C 13 05 07.38 +53 31 39.2 q L28
2018-12-10 03:21:42 C 13 05 07.42 +53 31 39.3 q L28
2018-12-10 03:21:55 C 13 05 07.50 +53 31 39.2 q L28
2018-12-10 03:22:07 C 13 05 07.69 +53 31 38.8 q L28
2018-12-10 03:22:33 C 13 05 07.79 +53 31 38.4 q L28
2018-12-10 03:22:46 C 13 05 07.95 +53 31 38.1 q L28
2018-12-10 03:22:59 C 13 05 08.04 +53 31 38.2 q L28
2018-12-10 03:23:12 C 13 05 08.15 +53 31 37.8 q L28
2018-12-10 03:23:25 C 13 05 08.17 +53 31 37.5 q L28
2018-12-10 03:23:38 C 13 05 08.34 +53 31 37.6 q L28
2018-12-10 03:23:51 C 13 05 08.46 +53 31 36.9 q L28
2018-12-10 03:24:04 C 13 05 08.48 +53 31 36.5 q L28
2018-12-10 03:24:31 C 13 05 08.67 +53 31 36.0 q L28
2018-12-10 03:24:44 C 13 05 08.70 +53 31 36.2 q L28
2018-12-10 03:24:57 C 13 05 08.96 +53 31 35.7 q L28
2018-12-10 03:25:10 C 13 05 08.98 +53 31 35.1 q L28
2018-12-10 03:25:23 C 13 05 09.08 +53 31 35.5 q L28
2018-12-10 03:25:36 C 13 05 09.18 +53 31 34.5 q L28
2018-12-10 03:25:49 C 13 05 09.30 +53 31 34.8 q L28
2018-12-10 03:26:15 C 13 05 09.51 +53 31 33.9 q L28
2018-12-10 03:26:28 C 13 05 09.59 +53 31 34.2 q L28
2018-12-10 03:26:40 C 13 05 09.61 +53 31 34.0 q L28
2018-12-10 03:26:53 C 13 05 09.78 +53 31 33.1 q L28
2018-12-10 03:27:06 C 13 05 09.75 +53 31 33.1 q L28
2018-12-10 03:27:19 C 13 05 09.85 +53 31 33.0 q L28
2018-12-10 03:27:32 C 13 05 10.01 +53 31 32.7 q L28
2018-12-10 03:27:45 C 13 05 10.07 +53 31 32.8 q L28
2018-12-10 03:27:58 C 13 05 10.17 +53 31 32.4 q L28
2018-12-10 03:28:11 C 13 05 10.33 +53 31 32.2 q L28
2018-12-10 03:28:24 C 13 05 10.29 +53 31 31.7 q L28
2018-12-10 03:28:37 C 13 05 10.47 +53 31 31.0 q L28
2018-12-10 03:28:50 C 13 05 10.55 +53 31 31.3 q L28
2018-12-10 03:29:04 C 13 05 10.65 +53 31 31.0 q L28
2018-12-10 03:29:43 C 13 05 10.83 +53 31 30.3 q L28
Radar Observations (25)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2015-11-29 10:46:00 85804.8994 0.1 Hz 2380 -1 -1
2015-11-29 11:30:00 126373337.75 4 us 2380 -1 -1
2015-12-05 09:40:00 108455005.78 4 us 8560 -14 -14
2015-12-05 11:04:00 108261765.32 1 us 2380 -1 -1
2015-12-14 11:10:00 84753323.82 2 us 2380 -1 -1
2015-12-19 10:40:00 144052.671 0.2 Hz 8560 -14 -14
2018-08-25 17:09:00 72876.4566 0.03 Hz 2380 -1 -1
2018-11-26 13:40:00 316057.557 0.1 Hz 8560 -14 -14
2018-11-26 14:40:00 89575535 4 us 8560 -14 -14
2018-12-09 09:30:00 48541869.19 1.25 us 8560 -14 -14
2018-12-12 11:20:00 38887792.7 1 us 8560 -14 -14
2018-12-15 12:30:00 29956646.53 0.4 us 8560 -14 -14
2018-12-17 11:20:00 24970431.7 2.5 us 8560 -14 -14
2021-11-22 07:30:00 86215626 1 us 8560 -14 -14
2021-11-30 12:30:00 64811312.27 1.5 us 8560 -14 -14
2021-12-16 07:10:00 28727.135 0.1 Hz 7159.45 -47 -43
2021-12-20 09:20:00 -72269.335 0.13 Hz 7159.45 -47 -36
2021-12-21 07:35:00 -85033.283 0.19 Hz 7159.45 -47 -43
2021-12-29 01:40:00 51121148 3 us 8560 -14 -14
2024-10-28 04:30:00 126490579.88 1.5 us 8560 -14 -14
2024-11-23 02:20:00 70891.529 0.1 Hz 8560 -14 -14
2024-11-23 02:40:00 91920286.66 4 us 8560 -14 -14
2024-12-06 05:30:00 88740443.05 2.5 us 8560 -14 -14
2024-12-09 04:00:00 90039540.33 2 us 8560 -14 -14
2024-12-30 02:20:00 114803979 1.5 us 8560 -14 -14
Station codes
-47 DSS-47 ATCA (W196) -43 DSS-43 Tidbinbilla (70-m) -36 DSS-36 Tidbinbilla (34-m) -14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)