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
2024-11-11 18:55:45 C 18 29 48.610 +63 47 44.63 V Z80
2024-11-11 18:59:49 C 18 29 50.633 +63 47 40.09 V Z80
2024-11-12 02:31:29 C 18 33 41.022 +63 40 34.43 V 703
2024-11-12 02:34:46 C 18 33 42.671 +63 40 30.40 V 703
2024-11-12 02:38:02 C 18 33 44.262 +63 40 26.29 V 703
2024-11-12 02:41:18 C 18 33 45.882 +63 40 22.04 V 703
2024-11-13 01:44:54 C 18 45 40.115 +63 15 15.73 V 703
2024-11-13 01:47:58 C 18 45 41.598 +63 15 11.20 V 703
2024-11-13 01:51:03 C 18 45 43.088 +63 15 06.91 V 703
2024-11-13 18:48:24 C 18 54 26.294 +62 53 22.27 V Z80
2024-11-13 18:52:27 C 18 54 28.322 +62 53 16.19 V Z80
2024-11-13 18:56:32 C 18 54 30.293 +62 53 10.32 V Z80
2024-11-14 02:14:02 C 18 58 11.460 +62 43 37.13 V 703
2024-11-14 02:17:58 C 18 58 13.368 +62 43 31.08 V 703
2024-11-14 02:21:54 C 18 58 15.236 +62 43 24.64 V 703
2024-11-14 02:25:50 C 18 58 17.137 +62 43 18.19 V 703
2024-11-14 17:09:06 C 19 05 48.835 +62 21 58.79 X M26
2024-11-14 17:12:14 C 19 05 50.316 +62 21 53.64 X M26
2024-11-14 17:14:58 C 19 05 51.581 +62 21 48.92 X M26
2024-11-15 02:15:39 C 19 10 21.659 +62 07 56.24 V 703
2024-11-15 02:19:05 C 19 10 23.264 +62 07 49.76 V 703
2024-11-15 02:22:31 C 19 10 24.906 +62 07 43.50 V 703
2024-11-15 02:25:56 C 19 10 26.519 +62 07 37.52 V 703
2024-11-15 22:08:56 C 19 20 17.995 +61 33 47.99 V Z80
2024-11-15 22:10:46 C 19 20 18.924 +61 33 44.24 V Z80
2024-11-17 05:35:56 C 19 35 40.260 +60 35 53.12 V T05
2024-11-17 05:43:13 C 19 35 43.524 +60 35 36.89 V T05
2024-11-17 05:47:49 C 19 35 45.581 +60 35 26.59 V T05
2024-11-17 06:09:54 C 19 35 55.625 +60 34 36.23 V T05
2024-11-17 17:27:34 B 19 41 22.82 +60 10 49.8 X L76
2024-11-17 17:29:37 B 19 41 23.76 +60 10 44.9 X L76
2024-11-17 17:31:41 B 19 41 24.71 +60 10 40.1 X L76
2024-11-17 17:33:46 B 19 41 25.66 +60 10 35.4 X L76
2024-11-17 17:35:50 B 19 41 26.63 +60 10 30.5 X L76
2024-11-17 17:37:54 B 19 41 27.58 +60 10 25.8 X L76
2024-11-17 17:39:57 B 19 41 28.52 +60 10 21.0 X L76
2024-11-17 17:42:00 B 19 41 29.48 +60 10 16.3 X L76
2024-11-17 17:44:04 B 19 41 30.43 +60 10 11.3 X L76
2024-11-17 18:04:52 B 19 41 41.07 +60 09 29.7 X L99
2024-11-17 18:05:57 B 19 41 41.65 +60 09 23.7 X L99
2024-11-17 18:09:09 B 19 41 43.02 +60 09 17.4 X L99
2024-11-18 01:24:18 C 19 45 11.106 +59 54 31.18 V 703
2024-11-18 01:27:46 C 19 45 12.604 +59 54 23.15 V 703
2024-11-18 01:31:14 C 19 45 14.137 +59 54 15.12 V 703
2024-11-18 01:34:42 C 19 45 15.635 +59 54 07.06 V 703
2024-11-19 03:28:38 C 19 57 15.793 +58 54 45.90 V G96
2024-11-19 03:38:06 C 19 57 19.937 +58 54 20.92 V G96
2024-11-19 03:47:31 C 19 57 24.073 +58 53 56.04 V G96
2024-11-19 03:56:58 C 19 57 28.238 +58 53 30.95 V G96
2024-11-21 05:32:11 C 20 19 29.107 +56 46 14.52 V T05
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)