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 03:41:11 C 13 05 15.83 +53 31 17.3 q L28
2018-12-10 03:41:24 C 13 05 15.86 +53 31 17.1 q L28
2018-12-10 03:41:37 C 13 05 16.05 +53 31 16.7 q L28
2018-12-10 03:41:50 C 13 05 16.09 +53 31 16.2 q L28
2018-12-10 03:42:03 C 13 05 16.20 +53 31 16.1 q L28
2018-12-10 03:42:16 C 13 05 16.27 +53 31 15.5 q L28
2018-12-10 03:42:29 C 13 05 16.38 +53 31 15.4 q L28
2018-12-10 03:42:42 C 13 05 16.45 +53 31 15.3 q L28
2018-12-10 03:42:55 C 13 05 16.59 +53 31 14.7 q L28
2018-12-10 03:43:09 C 13 05 16.58 +53 31 14.8 q L28
2018-12-10 03:43:22 C 13 05 16.75 +53 31 14.1 q L28
2018-12-10 03:43:35 C 13 05 16.81 +53 31 14.2 q L28
2018-12-10 03:43:48 C 13 05 17.00 +53 31 14.3 q L28
2018-12-10 03:44:01 C 13 05 17.09 +53 31 13.3 q L28
2018-12-10 03:44:14 C 13 05 17.14 +53 31 13.4 q L28
2018-12-10 03:44:27 C 13 05 17.22 +53 31 13.0 q L28
2018-12-10 03:44:40 C 13 05 17.31 +53 31 12.8 q L28
2018-12-10 03:44:53 C 13 05 17.40 +53 31 12.9 q L28
2018-12-10 03:45:06 C 13 05 17.58 +53 31 12.2 q L28
2018-12-10 03:45:19 C 13 05 17.63 +53 31 11.9 q L28
2018-12-10 03:45:31 C 13 05 17.64 +53 31 12.0 q L28
2018-12-10 03:45:44 C 13 05 17.81 +53 31 12.0 q L28
2018-12-10 03:45:57 C 13 05 17.85 +53 31 11.5 q L28
2018-12-10 03:46:10 C 13 05 17.92 +53 31 10.9 q L28
2018-12-10 03:46:23 C 13 05 18.02 +53 31 11.4 q L28
2018-12-10 03:46:36 C 13 05 18.12 +53 31 11.2 q L28
2018-12-10 03:46:49 C 13 05 18.22 +53 31 10.2 q L28
2018-12-10 03:47:02 C 13 05 18.35 +53 31 10.6 q L28
2018-12-10 03:47:15 C 13 05 18.36 +53 31 10.3 q L28
2018-12-10 03:47:28 C 13 05 18.50 +53 31 09.5 q L28
2018-12-10 03:47:55 C 13 05 18.68 +53 31 09.2 q L28
2018-12-10 03:48:08 C 13 05 18.84 +53 31 08.9 q L28
2018-12-10 03:48:21 C 13 05 18.85 +53 31 08.5 q L28
2018-12-10 03:48:34 C 13 05 18.99 +53 31 08.5 q L28
2018-12-10 03:48:47 C 13 05 19.06 +53 31 08.3 q L28
2018-12-10 03:49:00 C 13 05 19.13 +53 31 08.2 q L28
2018-12-10 03:49:13 C 13 05 19.33 +53 31 07.7 q L28
2018-12-10 03:49:26 C 13 05 19.36 +53 31 07.9 q L28
2018-12-10 03:49:52 C 13 05 19.50 +53 31 06.4 q L28
2018-12-10 03:50:17 C 13 05 19.71 +53 31 06.5 q L28
2018-12-10 03:50:30 C 13 05 19.82 +53 31 05.9 q L28
2018-12-10 03:50:43 C 13 05 19.87 +53 31 06.3 q L28
2018-12-10 03:50:56 C 13 05 20.04 +53 31 05.2 q L28
2018-12-10 03:51:09 C 13 05 20.12 +53 31 05.3 q L28
2018-12-10 03:51:22 C 13 05 20.14 +53 31 05.5 q L28
2018-12-10 03:51:35 C 13 05 20.29 +53 31 04.3 q L28
2018-12-10 03:51:48 C 13 05 20.33 +53 31 05.1 q L28
2018-12-10 03:52:01 C 13 05 20.45 +53 31 04.4 q L28
2018-12-10 03:52:14 C 13 05 20.57 +53 31 04.1 q L28
2018-12-10 03:52:28 C 13 05 20.57 +53 31 04.1 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)