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
2021-12-02 19:48:17 C 16 59 46.77 +76 56 58.6 V Z80
2021-12-02 19:49:45 C 16 59 48.92 +76 56 56.7 V Z80
2021-12-02 19:51:17 C 16 59 51.12 +76 56 54.9 V Z80
2021-12-04 18:20:08 C 18 05 42.54 +75 41 54.2 V L18
2021-12-04 18:20:44 C 18 05 43.48 +75 41 52.5 V L18
2021-12-04 18:21:02 C 18 05 43.91 +75 41 51.9 V L18
2021-12-04 18:21:20 C 18 05 44.32 +75 41 50.8 V L18
2021-12-04 18:21:38 C 18 05 44.76 +75 41 50.2 V L18
2021-12-04 18:21:56 C 18 05 45.18 +75 41 49.1 V L18
2021-12-04 18:22:14 C 18 05 45.61 +75 41 47.6 V L18
2021-12-04 18:22:32 C 18 05 45.96 +75 41 47.1 V L18
2021-12-04 18:22:50 C 18 05 46.48 +75 41 46.3 V L18
2021-12-05 19:37:12 C 18 39 42.74 +74 27 50.5 t B66
2021-12-05 20:41:08 C 18 41 07.61 +74 23 39.4 t B66
2021-12-05 21:47:11 C 18 42 37.31 +74 19 40.0 V Z80
2021-12-05 21:49:00 C 18 42 39.78 +74 19 33.1 V Z80
2021-12-05 21:50:49 C 18 42 42.19 +74 19 25.9 V Z80
2021-12-06 20:49:48 C 19 10 52.42 +72 48 36.9 V Z80
2021-12-06 20:57:04 C 19 11 01.00 +72 48 01.8 V Z80
2021-12-06 21:04:20 C 19 11 09.68 +72 47 26.1 V Z80
2021-12-09 19:33:30 C 20 19 43.75 +65 55 58.9 X L63
2021-12-09 19:47:21 C 20 19 54.43 +65 54 11.0 X L63
2021-12-09 20:04:33 C 20 20 07.79 +65 51 56.3 X L63
2021-12-10 17:45:34 C 20 36 09.41 +63 05 37.7 V B18
2021-12-10 17:49:18 C 20 36 11.96 +63 05 05.2 V B18
2021-12-10 17:53:02 C 20 36 14.46 +63 04 32.9 V B18
2021-12-10 17:56:46 C 20 36 17.00 +63 04 00.5 V B18
2021-12-14 05:46:39 C 21 21 59.55 +49 41 08.3 V T08
2021-12-14 05:50:40 C 21 22 01.02 +49 40 22.0 V T08
2021-12-14 06:01:58 C 21 22 05.21 +49 38 11.3 V T08
2021-12-14 06:19:53 C 21 22 11.91 +49 34 43.5 V T08
2021-12-15 17:33:57 C 21 35 54.48 +42 52 02.1 V L92
2021-12-15 17:34:15 C 21 35 54.64 +42 51 58.5 V L92
2021-12-15 17:34:32 C 21 35 54.71 +42 51 56.1 V L92
2021-12-15 17:34:49 C 21 35 54.74 +42 51 48.9 V L92
2021-12-15 17:35:07 C 21 35 54.89 +42 51 47.4 V L92
2021-12-15 17:35:25 C 21 35 54.92 +42 51 42.2 V L92
2021-12-15 17:35:42 C 21 35 55.02 +42 51 38.0 V L92
2021-12-15 17:36:00 C 21 35 55.14 +42 51 35.0 V L92
2021-12-15 17:36:17 C 21 35 54.82 +42 51 31.7 V L92
2021-12-15 17:36:35 C 21 35 55.22 +42 51 29.1 V L92
2021-12-15 17:37:27 C 21 35 55.46 +42 51 16.4 V L92
2021-12-15 17:37:45 C 21 35 55.55 +42 51 12.6 V L92
2021-12-15 17:38:02 C 21 35 55.77 +42 51 10.5 V L92
2021-12-15 17:38:43 C 21 35 55.93 +42 51 00.3 V L92
2021-12-15 17:39:01 C 21 35 56.03 +42 50 57.9 V L92
2021-12-15 17:39:18 C 21 35 56.07 +42 50 53.7 V L92
2021-12-15 17:39:35 C 21 35 56.24 +42 50 56.0 V L92
2021-12-15 17:39:52 C 21 35 56.37 +42 50 51.2 V L92
2021-12-15 17:40:10 C 21 35 56.39 +42 50 45.6 V L92
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)