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 04:15:25 C 13 05 30.37 +53 30 36.5 q L28
2018-12-10 04:15:38 C 13 05 30.41 +53 30 36.5 q L28
2018-12-10 04:15:52 C 13 05 30.57 +53 30 35.8 q L28
2018-12-10 04:16:05 C 13 05 30.55 +53 30 36.0 q L28
2018-12-10 04:16:31 C 13 05 30.79 +53 30 35.1 q L28
2018-12-10 04:16:57 C 13 05 30.93 +53 30 34.2 q L28
2018-12-10 04:17:10 C 13 05 31.10 +53 30 34.6 q L28
2018-12-10 04:17:23 C 13 05 31.16 +53 30 33.6 q L28
2018-12-10 04:17:36 C 13 05 31.23 +53 30 33.6 q L28
2018-12-10 04:17:49 C 13 05 31.32 +53 30 33.3 q L28
2018-12-10 04:18:02 C 13 05 31.48 +53 30 33.6 q L28
2018-12-10 04:18:14 C 13 05 31.49 +53 30 32.3 q L28
2018-12-10 04:18:27 C 13 05 31.59 +53 30 32.7 q L28
2018-12-10 04:18:40 C 13 05 31.66 +53 30 31.9 q L28
2018-12-10 04:18:53 C 13 05 31.80 +53 30 32.2 q L28
2018-12-10 04:19:06 C 13 05 31.90 +53 30 32.1 q L28
2018-12-10 04:19:19 C 13 05 32.04 +53 30 31.3 q L28
2018-12-10 04:19:32 C 13 05 32.12 +53 30 31.8 q L28
2018-12-10 04:19:45 C 13 05 32.19 +53 30 31.0 q L28
2018-12-10 04:19:58 C 13 05 32.23 +53 30 30.3 q L28
2018-12-10 04:20:24 C 13 05 32.48 +53 30 29.9 q L28
2018-12-10 04:20:38 C 13 05 32.44 +53 30 30.3 q L28
2018-12-10 04:20:51 C 13 05 32.65 +53 30 29.3 q L28
2018-12-10 04:21:04 C 13 05 32.74 +53 30 29.5 q L28
2018-12-10 04:21:17 C 13 05 32.79 +53 30 29.4 q L28
2018-12-10 04:21:30 C 13 05 32.94 +53 30 29.1 q L28
2018-12-10 04:21:43 C 13 05 32.95 +53 30 28.4 q L28
2018-12-10 04:21:56 C 13 05 33.08 +53 30 28.3 q L28
2018-12-10 04:22:22 C 13 05 33.28 +53 30 27.4 q L28
2018-12-10 04:22:35 C 13 05 33.36 +53 30 27.4 q L28
2018-12-10 04:22:47 C 13 05 33.47 +53 30 26.7 q L28
2018-12-10 04:23:13 C 13 05 33.64 +53 30 26.8 q L28
2018-12-10 04:23:26 C 13 05 33.72 +53 30 26.9 q L28
2018-12-10 04:23:52 C 13 05 33.89 +53 30 26.0 q L28
2018-12-10 04:24:05 C 13 05 34.01 +53 30 25.8 q L28
2018-12-10 04:24:18 C 13 05 34.09 +53 30 25.4 q L28
2018-12-10 04:24:31 C 13 05 34.17 +53 30 25.3 q L28
2018-12-10 04:24:44 C 13 05 34.21 +53 30 25.6 q L28
2018-12-10 04:24:57 C 13 05 34.31 +53 30 24.3 q L28
2018-12-10 04:25:11 C 13 05 34.37 +53 30 24.4 q L28
2018-12-10 04:25:37 C 13 05 34.64 +53 30 23.8 q L28
2018-12-10 04:25:50 C 13 05 34.66 +53 30 23.3 q L28
2018-12-10 04:26:03 C 13 05 34.78 +53 30 22.9 q L28
2018-12-10 04:26:16 C 13 05 34.82 +53 30 23.0 q L28
2018-12-10 04:26:29 C 13 05 34.93 +53 30 22.8 q L28
2018-12-10 04:26:42 C 13 05 35.07 +53 30 22.4 q L28
2018-12-10 04:26:55 C 13 05 35.07 +53 30 22.2 q L28
2018-12-10 04:27:08 C 13 05 35.24 +53 30 22.1 q L28
2018-12-10 04:27:33 C 13 05 35.50 +53 30 22.1 q L28
2018-12-10 04:27:46 C 13 05 35.60 +53 30 21.5 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)