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
2024-12-24 18:06:58 B 23 27 44.028 +06 34 55.38 V 160
2024-12-24 18:12:03 B 23 27 44.508 +06 34 39.50 V 160
2024-12-24 18:17:14 B 23 27 45.014 +06 34 23.23 V 160
2024-12-26 10:53:56 C 23 32 10.58 +04 31 36.5 V D29
2024-12-26 11:14:15 C 23 32 12.36 +04 30 36.2 V D29
2024-12-26 11:34:34 C 23 32 14.17 +04 29 35.7 V D29
2024-12-26 18:51:13 B 23 33 00.089 +04 07 55.92 V 160
2024-12-26 19:00:55 B 23 33 01.145 +04 07 26.15 V 160
2024-12-27 18:28:30 B 23 35 25.517 +02 59 20.36 V 160
2024-12-27 18:39:57 B 23 35 26.381 +02 58 41.66 V 160
2024-12-28 02:32:45 C 23 36 13.424 +02 36 28.51 V 703
2024-12-28 02:36:03 C 23 36 13.712 +02 36 19.33 V 703
2024-12-28 02:39:21 C 23 36 13.957 +02 36 09.68 V 703
2024-12-28 02:42:38 C 23 36 14.249 +02 36 00.43 V 703
2024-12-28 05:51:58 C 23 36 32.554 +02 27 17.46 V T05
2024-12-28 05:56:39 C 23 36 32.933 +02 27 04.00 V T05
2024-12-28 06:04:35 C 23 36 33.576 +02 26 41.50 V T05
2024-12-28 06:20:33 C 23 36 34.889 +02 25 56.03 V T05
2024-12-28 16:31:09 C 23 37 37.15 +01 56 43.7 X G02
2024-12-28 16:36:59 C 23 37 37.63 +01 56 27.2 X G02
2024-12-28 16:42:35 C 23 37 38.09 +01 56 11.7 X G02
2024-12-28 18:26:26 B 23 37 46.939 +01 51 25.99 V 160
2024-12-28 18:34:05 B 23 37 47.568 +01 51 04.43 V 160
2024-12-28 18:41:19 B 23 37 48.163 +01 50 44.12 V 160
2024-12-29 05:17:19 C 23 38 48.923 +01 21 41.90 X F52
2024-12-29 05:24:38 C 23 38 49.537 +01 21 21.61 X F52
2024-12-29 05:32:00 C 23 38 50.028 +01 21 01.54 X F52
2024-12-29 16:33:16 C 23 39 53.87 +00 50 11.6 X G02
2024-12-29 16:38:51 C 23 39 54.30 +00 49 56.4 X G02
2024-12-29 16:44:26 C 23 39 54.74 +00 49 41.0 X G02
2024-12-30 05:00:32 C 23 41 01.277 +00 16 53.69 V T08
2024-12-30 05:08:28 C 23 41 01.843 +00 16 32.27 V T08
2024-12-30 05:14:25 C 23 41 02.275 +00 16 16.18 V T08
2024-12-30 05:35:05 C 23 41 03.775 +00 15 20.41 V T08
2024-12-31 02:41:56 C 23 42 56.934 -00 41 16.66 V 703
2024-12-31 02:45:16 C 23 42 57.136 -00 41 25.04 V 703
2024-12-31 02:48:35 C 23 42 57.413 -00 41 33.50 V 703
2024-12-31 02:51:55 C 23 42 57.650 -00 41 43.08 V 703
2024-12-31 10:45:59 C 23 43 39.67 -01 02 30.3 V D29
2024-12-31 11:06:21 C 23 43 41.09 -01 03 23.6 V D29
2024-12-31 11:26:42 C 23 43 42.53 -01 04 16.9 V D29
2025-01-01 04:58:05 C 23 45 12.295 -01 49 31.87 V T05
2025-01-01 05:02:39 C 23 45 12.605 -01 49 43.54 V T05
2025-01-01 05:30:54 C 23 45 14.441 -01 50 56.15 V T05
2025-01-02 02:42:11 C 23 46 58.411 -02 45 04.68 V 703
2025-01-02 02:45:31 C 23 46 58.591 -02 45 13.32 V 703
2025-01-02 02:48:51 C 23 46 58.847 -02 45 21.28 V 703
2025-01-02 02:52:11 C 23 46 59.041 -02 45 30.13 V 703
2025-01-03 04:50:28 C 23 49 01.474 -03 49 52.46 V T08
2025-01-03 04:55:44 C 23 49 01.776 -03 50 05.35 V T08
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)