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
2015-11-13 11:07:48 C 10 23 43.65 +41 05 09.9 u H21
2015-11-13 11:09:45 C 10 23 43.86 +41 05 08.0 u H21
2015-11-13 11:12:18 C 10 23 44.09 +41 05 05.6 u H21
2015-11-16 13:40:32 S 10 32 09.28 +39 45 21.9 L C51
2015-11-16 16:49:24 S 10 32 31.24 +39 41 46.0 L C51
2015-11-16 19:58:16 S 10 32 53.19 +39 38 08.8 L C51
2015-11-17 02:16:01 S 10 33 37.270 +39 30 50.76 L C51
2015-11-17 05:24:53 S 10 33 59.38 +39 27 10.0 L C51
2015-11-17 08:33:45 S 10 34 21.55 +39 23 28.1 L C51
2015-11-17 11:42:37 S 10 34 43.76 +39 19 44.5 L C51
2015-11-17 18:00:21 S 10 35 28.31 +39 12 14.4 L C51
2015-11-17 19:34:47 S 10 35 39.48 +39 10 20.9 L C51
2015-11-17 21:09:13 S 10 35 50.65 +39 08 27.5 L C51
2015-11-17 21:09:25 S 10 35 50.68 +39 08 27.9 L C51
2015-11-17 22:43:39 S 10 36 01.84 +39 06 33.4 L C51
2015-11-17 22:43:51 S 10 36 01.87 +39 06 33.9 L C51
2015-11-18 00:18:06 S 10 36 13.04 +39 04 39.1 L C51
2015-11-18 00:18:17 S 10 36 13.07 +39 04 39.6 L C51
2015-11-18 01:52:32 S 10 36 24.26 +39 02 44.4 L C51
2015-11-18 01:52:42 S 10 36 24.30 +39 02 45.0 L C51
2015-11-18 03:27:08 S 10 36 35.52 +39 00 49.8 L C51
2015-11-18 05:01:34 S 10 36 46.76 +38 58 54.7 L C51
2015-11-18 06:36:00 S 10 36 58.00 +38 56 59.0 L C51
2015-11-18 08:10:26 S 10 37 09.28 +38 55 03.0 L C51
2015-11-18 09:44:53 S 10 37 20.539 +38 53 06.79 L C51
2015-11-18 11:19:19 S 10 37 31.84 +38 51 10.1 L C51
2015-11-18 12:53:45 S 10 37 43.13 +38 49 13.1 L C51
2015-11-18 14:28:11 S 10 37 54.45 +38 47 15.7 L C51
2015-11-18 16:02:37 S 10 38 05.76 +38 45 18.1 L C51
2015-11-18 17:37:03 S 10 38 17.10 +38 43 20.0 L C51
2015-11-18 19:11:29 S 10 38 28.459 +38 41 21.73 L C51
2015-11-18 20:45:55 S 10 38 39.82 +38 39 23.0 L C51
2015-11-18 22:20:21 S 10 38 51.20 +38 37 24.0 L C51
2015-11-18 23:54:47 S 10 39 02.61 +38 35 24.8 L C51
2015-11-19 01:29:13 S 10 39 13.99 +38 33 24.9 L C51
2015-11-19 03:03:39 S 10 39 25.39 +38 31 24.8 L C51
2015-11-19 06:12:31 S 10 39 48.27 +38 27 23.8 L C51
2015-11-19 09:21:23 S 10 40 11.18 +38 23 21.2 L C51
2015-11-19 10:24:46 C 10 40 21.23 +38 21 51.2 u H21
2015-11-19 10:26:44 C 10 40 21.44 +38 21 48.9 u H21
2015-11-19 10:28:41 C 10 40 21.65 +38 21 46.5 u H21
2015-11-19 10:30:39 C 10 40 21.87 +38 21 44.0 u H21
2015-11-19 10:32:36 C 10 40 22.08 +38 21 41.6 u H21
2015-11-19 10:34:34 C 10 40 22.28 +38 21 39.2 u H21
2015-11-19 10:36:32 C 10 40 22.49 +38 21 36.8 u H21
2015-11-19 10:38:29 C 10 40 22.71 +38 21 34.4 u H21
2015-11-19 10:40:27 C 10 40 22.92 +38 21 32.0 u H21
2015-11-19 10:42:25 C 10 40 23.14 +38 21 29.6 u H21
2015-11-19 10:44:22 C 10 40 23.34 +38 21 27.1 u H21
2015-11-19 10:46:20 C 10 40 23.55 +38 21 24.6 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)