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
2018-12-07 05:23:04 C 12 36 22.04 +54 48 50.8 V C95
2018-12-07 05:24:00 C 12 36 22.33 +54 48 50.2 V C95
2018-12-07 05:24:57 C 12 36 22.59 +54 48 49.6 V C95
2018-12-07 05:25:54 C 12 36 22.87 +54 48 49.1 V C95
2018-12-07 05:26:50 C 12 36 23.17 +54 48 48.6 V C95
2018-12-07 05:27:47 C 12 36 23.43 +54 48 48.2 V C95
2018-12-07 05:28:43 C 12 36 23.76 +54 48 47.5 V C95
2018-12-07 05:29:40 C 12 36 24.01 +54 48 46.8 V C95
2018-12-09 19:01:30 C 13 01 10.54 +53 41 24.5 q 168
2018-12-09 19:57:30 C 13 01 37.78 +53 40 21.7 q 168
2018-12-09 20:56:30 C 13 02 05.97 +53 39 17.2 q 168
2018-12-09 21:04:30 C 13 02 09.74 +53 39 08.5 q 168
2018-12-10 03:09:20 C 13 05 02.14 +53 31 53.5 q L28
2018-12-10 03:09:33 C 13 05 02.30 +53 31 53.1 q L28
2018-12-10 03:09:46 C 13 05 02.31 +53 31 53.0 q L28
2018-12-10 03:09:59 C 13 05 02.38 +53 31 52.9 q L28
2018-12-10 03:10:12 C 13 05 02.48 +53 31 52.0 q L28
2018-12-10 03:10:26 C 13 05 02.63 +53 31 51.4 q L28
2018-12-10 03:10:39 C 13 05 02.64 +53 31 52.2 q L28
2018-12-10 03:10:52 C 13 05 02.76 +53 31 51.3 q L28
2018-12-10 03:11:05 C 13 05 02.85 +53 31 51.2 q L28
2018-12-10 03:11:18 C 13 05 02.95 +53 31 51.0 q L28
2018-12-10 03:11:31 C 13 05 03.06 +53 31 50.4 q L28
2018-12-10 03:11:44 C 13 05 03.21 +53 31 50.5 q L28
2018-12-10 03:11:57 C 13 05 03.22 +53 31 50.4 q L28
2018-12-10 03:12:10 C 13 05 03.36 +53 31 50.3 q L28
2018-12-10 03:12:23 C 13 05 03.47 +53 31 49.5 q L28
2018-12-10 03:12:35 C 13 05 03.60 +53 31 49.9 q L28
2018-12-10 03:12:48 C 13 05 03.60 +53 31 48.9 q L28
2018-12-10 03:13:01 C 13 05 03.75 +53 31 49.4 q L28
2018-12-10 03:13:14 C 13 05 03.77 +53 31 48.9 q L28
2018-12-10 03:13:27 C 13 05 03.91 +53 31 48.2 q L28
2018-12-10 03:13:40 C 13 05 04.06 +53 31 48.4 q L28
2018-12-10 03:13:53 C 13 05 04.06 +53 31 48.3 q L28
2018-12-10 03:14:06 C 13 05 04.27 +53 31 47.2 q L28
2018-12-10 03:14:19 C 13 05 04.30 +53 31 47.8 q L28
2018-12-10 03:14:32 C 13 05 04.34 +53 31 47.3 q L28
2018-12-10 03:14:45 C 13 05 04.57 +53 31 47.0 q L28
2018-12-10 03:14:59 C 13 05 04.58 +53 31 47.0 q L28
2018-12-10 03:15:12 C 13 05 04.67 +53 31 46.8 q L28
2018-12-10 03:15:25 C 13 05 04.81 +53 31 46.6 q L28
2018-12-10 03:15:38 C 13 05 04.77 +53 31 46.6 q L28
2018-12-10 03:15:51 C 13 05 04.94 +53 31 46.1 q L28
2018-12-10 03:16:04 C 13 05 05.10 +53 31 45.8 q L28
2018-12-10 03:16:17 C 13 05 05.11 +53 31 45.8 q L28
2018-12-10 03:16:30 C 13 05 05.15 +53 31 44.8 q L28
2018-12-10 03:16:43 C 13 05 05.34 +53 31 44.9 q L28
2018-12-10 03:16:56 C 13 05 05.35 +53 31 44.9 q L28
2018-12-10 03:17:09 C 13 05 05.48 +53 31 44.3 q L28
2018-12-10 03:17:21 C 13 05 05.60 +53 31 44.2 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)