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 04:03:44 C 13 05 25.36 +53 30 50.6 q L28
2018-12-10 04:03:57 C 13 05 25.40 +53 30 50.1 q L28
2018-12-10 04:04:09 C 13 05 25.56 +53 30 50.1 q L28
2018-12-10 04:04:22 C 13 05 25.65 +53 30 49.6 q L28
2018-12-10 04:04:35 C 13 05 25.72 +53 30 50.1 q L28
2018-12-10 04:04:48 C 13 05 25.90 +53 30 49.1 q L28
2018-12-10 04:05:14 C 13 05 26.06 +53 30 48.6 q L28
2018-12-10 04:05:27 C 13 05 26.13 +53 30 48.5 q L28
2018-12-10 04:05:40 C 13 05 26.31 +53 30 48.1 q L28
2018-12-10 04:05:53 C 13 05 26.37 +53 30 47.8 q L28
2018-12-10 04:06:06 C 13 05 26.45 +53 30 47.4 q L28
2018-12-10 04:06:19 C 13 05 26.50 +53 30 47.0 q L28
2018-12-10 04:06:33 C 13 05 26.58 +53 30 47.4 q L28
2018-12-10 04:06:46 C 13 05 26.70 +53 30 46.9 q L28
2018-12-10 04:06:59 C 13 05 26.85 +53 30 47.0 q L28
2018-12-10 04:07:12 C 13 05 26.94 +53 30 45.8 q L28
2018-12-10 04:07:38 C 13 05 27.03 +53 30 45.7 q L28
2018-12-10 04:07:51 C 13 05 27.17 +53 30 45.7 q L28
2018-12-10 04:08:04 C 13 05 27.28 +53 30 45.6 q L28
2018-12-10 04:08:17 C 13 05 27.35 +53 30 44.5 q L28
2018-12-10 04:08:43 C 13 05 27.51 +53 30 44.3 q L28
2018-12-10 04:08:55 C 13 05 27.63 +53 30 44.1 q L28
2018-12-10 04:09:08 C 13 05 27.65 +53 30 44.5 q L28
2018-12-10 04:09:21 C 13 05 27.80 +53 30 43.3 q L28
2018-12-10 04:09:34 C 13 05 27.83 +53 30 42.8 q L28
2018-12-10 04:09:47 C 13 05 27.92 +53 30 43.5 q L28
2018-12-10 04:10:00 C 13 05 28.06 +53 30 42.9 q L28
2018-12-10 04:10:26 C 13 05 28.30 +53 30 42.4 q L28
2018-12-10 04:10:39 C 13 05 28.40 +53 30 41.9 q L28
2018-12-10 04:10:52 C 13 05 28.38 +53 30 42.4 q L28
2018-12-10 04:11:06 C 13 05 28.57 +53 30 41.5 q L28
2018-12-10 04:11:19 C 13 05 28.63 +53 30 41.3 q L28
2018-12-10 04:11:32 C 13 05 28.66 +53 30 41.2 q L28
2018-12-10 04:11:45 C 13 05 28.88 +53 30 40.7 q L28
2018-12-10 04:11:58 C 13 05 28.89 +53 30 41.3 q L28
2018-12-10 04:12:11 C 13 05 28.98 +53 30 39.9 q L28
2018-12-10 04:12:24 C 13 05 29.06 +53 30 39.8 q L28
2018-12-10 04:12:37 C 13 05 29.09 +53 30 39.5 q L28
2018-12-10 04:12:50 C 13 05 29.31 +53 30 39.0 q L28
2018-12-10 04:13:03 C 13 05 29.32 +53 30 38.7 q L28
2018-12-10 04:13:16 C 13 05 29.42 +53 30 39.1 q L28
2018-12-10 04:13:28 C 13 05 29.50 +53 30 38.1 q L28
2018-12-10 04:13:41 C 13 05 29.66 +53 30 38.1 q L28
2018-12-10 04:13:54 C 13 05 29.68 +53 30 38.3 q L28
2018-12-10 04:14:07 C 13 05 29.83 +53 30 37.7 q L28
2018-12-10 04:14:20 C 13 05 29.85 +53 30 38.3 q L28
2018-12-10 04:14:33 C 13 05 29.96 +53 30 36.9 q L28
2018-12-10 04:14:46 C 13 05 30.05 +53 30 36.8 q L28
2018-12-10 04:14:59 C 13 05 30.20 +53 30 37.0 q L28
2018-12-10 04:15:12 C 13 05 30.26 +53 30 36.7 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)