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
2021-11-05 02:42:49 C 12 00 56.71 +65 42 50.4 Y B18
2021-11-05 02:43:23 C 12 00 56.76 +65 42 50.9 Y B18
2021-11-05 02:43:59 C 12 00 56.80 +65 42 51.4 Y B18
2021-11-06 16:57:31 C 12 04 49.68 +66 12 21.5 Y 557
2021-11-06 17:12:46 C 12 04 51.74 +66 12 32.0 Y 557
2021-11-06 23:02:11 C 12 05 41.42 +66 17 20.3 Y 557
2021-11-06 23:11:21 C 12 05 42.66 +66 17 29.0 Y 557
2021-11-09 20:43:54 S 12 14 13.39 +67 18 41.9 L C51
2021-11-09 23:52:02 S 12 14 38.91 +67 21 33.3 L C51
2021-11-10 06:08:18 S 12 15 30.51 +67 27 18.8 L C51
2021-11-10 07:42:33 S 12 15 43.66 +67 28 46.7 L C51
2021-11-10 09:16:37 S 12 15 56.75 +67 30 13.8 L C51
2021-11-10 10:50:41 S 12 16 09.94 +67 31 41.1 L C51
2021-11-10 13:58:49 S 12 16 36.40 +67 34 36.4 L C51
2021-11-10 15:32:53 S 12 16 49.75 +67 36 04.2 L C51
2021-11-10 17:06:57 S 12 17 03.12 +67 37 32.2 L C51
2021-11-10 18:41:01 S 12 17 16.55 +67 39 00.5 L C51
2021-11-10 20:15:05 S 12 17 30.08 +67 40 29.0 L C51
2021-11-10 21:49:09 S 12 17 43.632 +67 41 57.80 L C51
2021-11-10 23:23:13 S 12 17 57.30 +67 43 26.4 L C51
2021-11-11 02:31:32 S 12 18 24.766 +67 46 26.36 L C51
2021-11-11 05:39:40 S 12 18 52.447 +67 49 25.72 L C51
2021-11-15 22:47:30 C 12 38 54.69 +69 46 19.5 V Z80
2021-11-15 22:50:36 C 12 38 55.43 +69 46 23.6 V Z80
2021-11-17 00:34:23 C 12 44 41.61 +70 16 30.7 V Z80
2021-11-17 00:35:42 C 12 44 41.95 +70 16 32.7 V Z80
2021-11-17 00:37:00 C 12 44 42.28 +70 16 34.3 V Z80
2021-11-17 00:38:11 C 12 44 42.57 +70 16 35.9 V Z80
2021-11-17 00:39:38 C 12 44 42.97 +70 16 38.2 V Z80
2021-11-17 20:57:09 C 12 49 28.24 +70 40 41.4 V Z80
2021-11-17 21:02:32 C 12 49 29.89 +70 40 48.0 V Z80
2021-11-17 21:07:56 C 12 49 31.51 +70 40 54.5 V Z80
2021-11-22 21:14:10 C 13 29 13.58 +73 20 07.9 V K85
2021-11-22 21:15:42 C 13 29 12.61 +73 20 10.3 V Z80
2021-11-22 21:17:29 C 13 29 13.56 +73 20 13.1 V Z80
2021-11-22 21:19:16 C 13 29 14.38 +73 20 15.6 V Z80
2021-11-22 21:37:23 C 13 29 25.21 +73 20 41.7 V K85
2021-11-24 13:44:17 C 13 49 12.98 +74 19 05.1 V T08
2021-11-24 13:50:45 C 13 49 16.25 +74 19 17.3 V T08
2021-11-24 13:59:28 C 13 49 21.25 +74 19 33.2 V T08
2021-11-24 14:14:34 C 13 49 29.31 +74 20 01.3 V T08
2021-11-24 20:17:49 C 13 52 19.20 +74 27 14.6 V K85
2021-11-24 20:47:17 C 13 52 37.85 +74 27 55.2 V K85
2021-11-24 21:06:16 C 13 52 49.94 +74 28 21.8 V K85
2021-11-26 20:08:50 C 14 22 57.72 +75 33 58.1 V Z80
2021-11-26 20:10:26 C 14 22 59.00 +75 33 59.8 V Z80
2021-11-26 20:12:23 C 14 23 00.58 +75 34 02.0 V Z80
2021-11-28 20:42:36 C 15 04 11.40 +76 32 12.4 V Z80
2021-11-28 20:43:31 C 15 04 12.32 +76 32 13.4 V Z80
2021-11-28 20:44:25 C 15 04 13.47 +76 32 14.4 V Z80
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)