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
2015-12-03 10:44:31 C 11 28 18.01 +27 54 39.9 u H21
2015-12-03 10:46:29 C 11 28 18.31 +27 54 34.9 u H21
2015-12-03 10:48:26 C 11 28 18.62 +27 54 29.8 u H21
2015-12-03 10:50:24 C 11 28 18.91 +27 54 24.7 u H21
2015-12-03 10:52:22 C 11 28 19.22 +27 54 19.5 u H21
2015-12-03 10:54:19 C 11 28 19.52 +27 54 14.4 u H21
2015-12-03 10:56:17 C 11 28 19.81 +27 54 09.3 u H21
2015-12-03 10:58:15 C 11 28 20.12 +27 54 04.1 u H21
2015-12-03 11:00:00 C 11 28 20.38 +27 53 59.6 u H21
2015-12-11 02:58:46 C 12 04 02.69 +17 31 07.8 u 118
2015-12-11 03:07:24 C 12 04 04.46 +17 30 31.6 u 118
2015-12-11 03:14:42 C 12 04 05.96 +17 30 01.1 u 118
2015-12-18 04:27:26 C 12 47 09.36 +02 49 39.5 q G40
2015-12-18 04:28:32 C 12 47 09.65 +02 49 32.6 q G40
2015-12-18 05:16:09 C 12 47 22.63 +02 44 38.6 q G40
2015-12-18 05:17:15 C 12 47 22.95 +02 44 31.7 q G40
2015-12-18 05:18:23 C 12 47 23.25 +02 44 24.7 q G40
2015-12-18 05:51:07 C 12 47 32.05 +02 41 02.3 q G40
2015-12-18 05:52:16 C 12 47 32.37 +02 40 55.2 q G40
2015-12-18 05:53:23 C 12 47 32.67 +02 40 48.2 q G40
2015-12-19 04:47:15 C 12 54 23.12 +00 16 03.2 q G40
2015-12-19 04:48:20 C 12 54 23.41 +00 15 56.5 q G40
2015-12-19 04:49:35 C 12 54 23.78 +00 15 48.3 q G40
2015-12-19 05:27:16 C 12 54 34.46 +00 11 45.4 q G40
2015-12-19 05:28:22 C 12 54 34.75 +00 11 38.6 q G40
2015-12-19 06:00:52 C 12 54 43.88 +00 08 08.9 q G40
2015-12-19 06:02:00 C 12 54 44.17 +00 08 02.0 q G40
2015-12-19 06:03:05 C 12 54 44.49 +00 07 54.5 q G40
2015-12-19 06:04:18 C 12 54 44.83 +00 07 46.8 q G40
2015-12-20 04:56:24 C 13 01 48.66 -02 22 37.2 q 204
2015-12-20 04:59:31 C 13 01 49.56 -02 22 57.9 q 204
2015-12-20 05:02:49 C 13 01 50.54 -02 23 20.0 q 204
2015-12-20 05:06:08 C 13 01 51.52 -02 23 42.1 q 204
2015-12-20 05:09:28 C 13 01 52.50 -02 24 04.1 q 204
2015-12-21 05:06:06 C 13 09 38.50 -05 05 14.7 o Z22
2015-12-21 05:18:05 C 13 09 42.21 -05 06 37.3 o Z22
2015-12-21 05:29:03 C 13 09 45.62 -05 07 53.3 o Z22
2018-10-07 23:28:33 C 10 12 56.03 +55 36 10.1 V Z80
2018-10-07 23:32:02 C 10 12 56.29 +55 36 12.1 V Z80
2018-10-07 23:35:31 C 10 12 56.15 +55 36 12.3 V Z80
2018-10-21 00:11:00 C 10 21 27.53 +56 23 05.8 V Z80
2018-10-21 00:11:59 C 10 21 27.52 +56 23 06.4 V Z80
2018-10-21 00:13:00 C 10 21 27.54 +56 23 06.8 V Z80
2018-10-21 00:13:59 C 10 21 27.63 +56 23 06.6 V Z80
2018-10-21 00:15:00 C 10 21 27.65 +56 23 06.8 V Z80
2018-10-21 00:15:59 C 10 21 27.71 +56 23 07.1 V Z80
2018-10-21 00:17:00 C 10 21 27.75 +56 23 07.0 V Z80
2018-10-21 00:17:59 C 10 21 27.82 +56 23 07.1 V Z80
2018-10-21 00:18:59 C 10 21 27.87 +56 23 07.4 V Z80
2018-10-21 00:20:00 C 10 21 27.86 +56 23 07.9 V Z80
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)