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
2012-11-20 20:17:47 C 10 42 42.88 +25 06 31.4 o 300
2012-12-10 11:22:14 C 12 00 17.56 +05 26 45.9 r 703
2012-12-10 11:33:39 C 12 00 19.62 +05 26 08.8 r 703
2012-12-10 11:45:09 C 12 00 21.85 +05 25 30.0 r 703
2012-12-10 11:56:41 C 12 00 24.01 +05 24 51.6 r 703
2012-12-13 11:25:06 C 12 14 56.98 +01 18 41.1 18.5 c 704
2012-12-13 11:45:18 C 12 15 01.01 +01 17 28.9 18.5 c 704
2012-12-13 12:06:22 C 12 15 05.12 +01 16 13.5 19.0 c 704
2015-09-27 10:57:12 C 08 55 44.96 +50 05 57.1 u 926
2015-09-27 11:16:47 C 08 55 45.47 +50 05 57.8 u 926
2015-09-27 11:39:09 C 08 55 46.08 +50 05 57.9 u 926
2015-09-28 10:51:08 C 08 56 31.83 +50 04 05.7 u 926
2015-09-28 11:07:05 C 08 56 32.37 +50 04 06.0 u 926
2015-09-28 11:23:03 C 08 56 32.89 +50 04 06.0 u 926
2015-10-01 11:54:39 C 08 59 22.77 +49 55 29.1 u 926
2015-10-01 12:05:52 C 08 59 23.17 +49 55 28.3 u 926
2015-10-01 12:17:09 C 08 59 23.56 +49 55 27.1 u 926
2015-10-21 18:34:16 C 09 31 17.27 +47 23 44.2 16.0 q 168
2015-10-21 18:39:26 C 09 31 17.69 +47 23 42.2 16.2 q 168
2015-10-21 20:34:41 C 09 31 27.66 +47 22 55.1 15.9 q 168
2015-10-21 20:40:16 C 09 31 28.14 +47 22 52.9 15.9 q 168
2015-10-21 21:37:22 C 09 31 32.89 +47 22 30.1 16.1 q 168
2015-11-06 00:43:07 C 10 04 52.10 +43 41 53.7 16.8 t 104
2015-11-06 02:11:41 C 10 05 00.74 +43 40 53.5 16.8 t 104
2015-11-06 03:43:31 C 10 05 09.31 +43 39 49.4 16.8 t 104
2015-11-09 10:50:49 C 10 13 19.37 +42 35 05.3 u H21
2015-11-09 10:52:49 C 10 13 19.56 +42 35 03.7 u H21
2015-11-09 10:54:49 C 10 13 19.75 +42 35 02.0 u H21
2015-11-09 10:56:50 C 10 13 19.94 +42 35 00.4 u H21
2015-11-09 10:58:50 C 10 13 20.12 +42 34 58.7 u H21
2015-11-09 11:00:51 C 10 13 20.31 +42 34 57.1 u H21
2015-11-09 11:02:51 C 10 13 20.50 +42 34 55.5 u H21
2015-11-09 11:04:52 C 10 13 20.69 +42 34 53.8 u H21
2015-11-09 11:06:53 C 10 13 20.87 +42 34 52.1 u H21
2015-11-09 11:08:53 C 10 13 21.05 +42 34 50.5 u H21
2015-11-09 11:10:54 C 10 13 21.24 +42 34 48.9 u H21
2015-11-09 11:12:42 C 10 13 21.41 +42 34 47.4 u H21
2015-11-13 10:42:19 C 10 23 41.16 +41 05 34.3 u H21
2015-11-13 10:44:16 C 10 23 41.36 +41 05 32.5 u H21
2015-11-13 10:46:14 C 10 23 41.54 +41 05 30.6 u H21
2015-11-13 10:48:12 C 10 23 41.73 +41 05 28.7 u H21
2015-11-13 10:50:09 C 10 23 41.93 +41 05 26.9 u H21
2015-11-13 10:52:07 C 10 23 42.12 +41 05 24.9 u H21
2015-11-13 10:54:04 C 10 23 42.30 +41 05 23.1 u H21
2015-11-13 10:56:02 C 10 23 42.49 +41 05 21.2 u H21
2015-11-13 10:58:00 C 10 23 42.69 +41 05 19.3 u H21
2015-11-13 10:59:57 C 10 23 42.87 +41 05 17.5 u H21
2015-11-13 11:01:55 C 10 23 43.07 +41 05 15.5 u H21
2015-11-13 11:03:52 C 10 23 43.27 +41 05 13.7 u H21
2015-11-13 11:05:50 C 10 23 43.46 +41 05 11.8 u H21
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)