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 04:54:52 C 13 05 46.79 +53 29 47.0 q L28
2018-12-10 04:55:05 C 13 05 46.96 +53 29 46.7 q L28
2018-12-10 04:55:43 C 13 05 47.25 +53 29 45.4 q L28
2018-12-10 04:56:09 C 13 05 47.34 +53 29 45.0 q L28
2018-12-10 04:56:22 C 13 05 47.49 +53 29 44.9 q L28
2018-12-10 04:56:35 C 13 05 47.54 +53 29 44.0 q L28
2018-12-10 04:56:48 C 13 05 47.72 +53 29 44.5 q L28
2018-12-10 04:57:01 C 13 05 47.72 +53 29 44.4 q L28
2018-12-10 04:57:27 C 13 05 48.00 +53 29 43.7 q L28
2018-12-10 04:57:40 C 13 05 47.98 +53 29 42.4 q L28
2018-12-10 04:57:54 C 13 05 48.09 +53 29 41.7 q L28
2018-12-10 04:58:33 C 13 05 48.41 +53 29 41.4 q L28
2018-12-10 04:58:46 C 13 05 48.44 +53 29 42.2 q L28
2018-12-10 04:58:59 C 13 05 48.53 +53 29 40.3 q L28
2018-12-10 04:59:25 C 13 05 48.72 +53 29 41.2 q L28
2018-12-10 04:59:38 C 13 05 48.88 +53 29 40.3 q L28
2018-12-10 04:59:51 C 13 05 48.93 +53 29 40.5 q L28
2018-12-10 05:00:04 C 13 05 48.99 +53 29 39.7 q L28
2018-12-10 05:00:16 C 13 05 49.10 +53 29 38.9 q L28
2018-12-10 05:00:29 C 13 05 49.16 +53 29 39.8 q L28
2018-12-10 05:00:42 C 13 05 49.33 +53 29 39.0 q L28
2018-12-10 05:00:55 C 13 05 49.42 +53 29 39.0 q L28
2018-12-10 05:01:08 C 13 05 49.35 +53 29 38.1 q L28
2018-12-10 05:01:21 C 13 05 49.52 +53 29 38.2 q L28
2018-12-10 05:01:34 C 13 05 49.59 +53 29 38.1 q L28
2018-12-10 05:02:26 C 13 05 50.02 +53 29 36.2 q L28
2018-12-10 05:02:40 C 13 05 50.12 +53 29 36.3 q L28
2018-12-10 05:03:06 C 13 05 50.26 +53 29 35.9 q L28
2018-12-10 05:03:19 C 13 05 50.30 +53 29 34.8 q L28
2018-12-10 05:03:32 C 13 05 50.45 +53 29 35.3 q L28
2018-12-10 05:03:45 C 13 05 50.51 +53 29 35.4 q L28
2018-12-10 05:04:11 C 13 05 50.75 +53 29 34.6 q L28
2018-12-10 05:04:50 C 13 05 51.00 +53 29 32.6 q L28
2018-12-10 05:05:02 C 13 05 51.03 +53 29 33.0 q L28
2018-12-10 05:05:41 C 13 05 51.28 +53 29 32.4 q L28
2018-12-10 05:05:54 C 13 05 51.49 +53 29 31.7 q L28
2018-12-10 05:06:07 C 13 05 51.49 +53 29 32.4 q L28
2018-12-10 05:06:20 C 13 05 51.59 +53 29 31.4 q L28
2018-12-10 05:06:33 C 13 05 51.61 +53 29 30.8 q L28
2018-12-10 05:06:46 C 13 05 51.84 +53 29 31.2 q L28
2018-12-10 05:06:59 C 13 05 51.80 +53 29 30.4 q L28
2018-12-10 05:07:26 C 13 05 51.97 +53 29 29.5 q L28
2018-12-10 05:07:39 C 13 05 52.10 +53 29 29.4 q L28
2018-12-10 05:07:52 C 13 05 52.24 +53 29 29.2 q L28
2018-12-10 05:08:05 C 13 05 52.39 +53 29 29.7 q L28
2018-12-10 05:08:18 C 13 05 52.47 +53 29 28.8 q L28
2018-12-10 05:08:44 C 13 05 52.53 +53 29 28.4 q L28
2018-12-10 05:09:10 C 13 05 52.76 +53 29 27.9 q L28
2018-12-10 05:09:35 C 13 05 52.93 +53 29 26.6 q L28
2018-12-10 05:09:48 C 13 05 53.06 +53 29 26.9 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)