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
2000-01-06 01:51:25 C 23 10 49.55 +01 41 56.4 c 699
2000-01-06 02:06:04 C 23 10 51.81 +01 42 06.1 c 699
2000-01-06 02:20:48 C 23 10 54.22 +01 42 14.4 c 699
2000-01-07 01:49:01 C 23 14 37.71 +01 58 13.4 673
2000-01-07 01:52:52 C 23 14 38.32 +01 58 15.3 z 711
2000-01-07 01:53:30 C 23 14 38.39 +01 58 16.9 673
2000-01-07 01:59:55 C 23 14 39.28 +01 58 21.0 673
2000-01-07 02:00:42 C 23 14 39.46 +01 58 20.6 z 711
2000-01-07 02:06:27 C 23 14 40.42 +01 58 26.1 673
2000-01-07 02:09:44 C 23 14 40.83 +01 58 27.0 z 711
2000-01-07 02:16:52 C 23 14 41.83 +01 58 33.0 673
2000-01-07 02:24:52 C 23 14 43.24 +01 58 36.3 c 699
2000-01-07 02:46:51 C 23 14 46.64 +01 58 50.6 c 699
2000-01-07 03:00:13 C 23 14 48.82 +01 59 00.1 i 651
2000-01-07 03:03:25 C 23 14 49.25 +01 59 02.7 i 651
2000-01-07 03:06:48 C 23 14 49.76 +01 59 05.0 i 651
2000-01-07 03:08:49 C 23 14 50.08 +01 59 06.7 c 699
2000-01-07 05:13:36 C 23 15 09.94 +02 00 33.0 568
2000-01-07 05:16:30 C 23 15 10.40 +02 00 35.2 568
2003-09-29 10:53:23 C 07 57 35.73 +32 50 00.6 o 699
2003-09-29 11:05:38 C 07 57 37.42 +32 49 53.2 o 699
2003-09-29 11:17:49 C 07 57 39.13 +32 49 46.5 o 699
2003-09-29 11:30:05 C 07 57 40.83 +32 49 39.0 o 699
2003-09-29 12:46:09 C 07 57 51.44 +32 48 55.3 c 673
2003-09-29 12:47:51 C 07 57 51.68 +32 48 54.2 c 673
2003-09-29 12:49:33 C 07 57 51.91 +32 48 53.3 c 673
2003-09-30 00:27:57 C 07 59 30.88 +32 41 46.1 r 198
2003-09-30 00:32:02 C 07 59 31.44 +32 41 43.8 r 198
2003-09-30 00:37:09 C 07 59 32.15 +32 41 41.1 r 198
2003-09-30 00:46:22 C 07 59 33.50 +32 41 36.0 r 198
2003-09-30 08:45:06 C 08 00 41.40 +32 36 48.3 c 651
2003-09-30 08:47:17 C 08 00 41.72 +32 36 47.1 c 651
2003-09-30 08:49:28 C 08 00 41.94 +32 36 46.3 c 651
2003-09-30 09:57:05 C 08 00 51.46 +32 36 06.7 c G90
2003-09-30 10:02:30 C 08 00 52.21 +32 36 03.4 c G90
2003-09-30 10:07:56 C 08 00 52.99 +32 36 00.4 c G90
2003-09-30 10:30:12 C 08 00 56.08 +32 35 48.0 18.8 c 704
2003-09-30 10:48:49 C 08 00 58.66 +32 35 36.8 19.2 c 704
2003-09-30 11:07:31 C 08 01 01.24 +32 35 25.8 19.4 c 704
2003-09-30 11:25:56 C 08 01 03.81 +32 35 14.8 19.3 c 704
2003-09-30 11:44:38 C 08 01 06.40 +32 35 03.5 19.0 c 704
2003-09-30 12:25:50 C 08 01 12.21 +32 34 38.2 c 673
2003-09-30 12:27:39 C 08 01 12.47 +32 34 37.5 c 673
2003-09-30 12:29:30 C 08 01 12.70 +32 34 36.3 c 673
2003-09-30 12:31:20 C 08 01 12.93 +32 34 35.1 c 673
2003-10-03 06:54:40 C 08 10 36.62 +31 52 13.9 c 932
2003-10-03 06:57:44 C 08 10 37.06 +31 52 11.7 c 932
2003-10-03 07:29:29 C 08 10 41.49 +31 51 51.9 c 932
2003-10-03 07:32:33 C 08 10 41.96 +31 51 49.7 c 932
2003-10-04 03:10:41 C 08 13 28.53 +31 38 40.2 J95
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)