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
2024-11-25 19:30:30 C 21 02 46.018 +50 58 56.35 V Z80
2024-11-28 16:42:34 B 21 26 10.08 +46 44 40.7 V 130
2024-11-28 16:44:15 B 21 26 10.56 +46 44 34.1 V 130
2024-11-28 16:46:16 B 21 26 11.15 +46 44 26.3 V 130
2024-11-28 16:48:18 B 21 26 11.73 +46 44 18.5 V 130
2024-11-28 18:20:13 C 21 26 39.118 +46 38 11.72 Z C23
2024-11-28 18:58:00 C 21 26 50.225 +46 35 42.11 Z C23
2024-11-28 20:34:52 C 21 27 18.30 +46 29 18.9 V M14
2024-11-28 20:56:19 C 21 27 24.82 +46 27 51.8 V M14
2024-11-28 21:01:46 C 21 27 27.142 +46 27 26.57 Z C23
2024-11-29 06:19:53 C 21 30 20.693 +45 52 22.26 V T05
2024-11-29 06:43:12 C 21 30 27.295 +45 50 46.46 V T05
2024-11-29 06:53:57 C 21 30 30.362 +45 50 02.15 V T05
2024-11-29 07:01:16 C 21 30 32.458 +45 49 31.91 V T05
2024-11-29 17:22:24 C 21 33 48.775 +45 08 35.16 Z C23
2024-11-29 17:23:34 C 21 33 49.058 +45 08 30.59 Z C23
2024-11-29 17:51:18 C 21 33 56.813 +45 06 40.03 Z C23
2024-11-30 20:06:24 C 21 41 39.37 +43 21 47.3 V M32
2024-11-30 20:08:50 C 21 41 40.06 +43 21 37.1 V M32
2024-11-30 20:11:16 C 21 41 40.74 +43 21 26.8 V M32
2024-11-30 20:13:43 C 21 41 41.43 +43 21 16.5 V M32
2024-11-30 20:16:31 C 21 41 42.22 +43 21 04.8 V M32
2024-12-01 17:21:05 C 21 47 44.08 +41 56 07.5 V M32
2024-12-01 17:23:13 C 21 47 44.62 +41 55 58.7 V M32
2024-12-01 17:25:21 C 21 47 45.09 +41 55 49.4 V M32
2024-12-01 17:27:08 C 21 47 45.58 +41 55 42.4 V M32
2024-12-01 17:29:17 C 21 47 46.18 +41 55 33.4 V M32
2024-12-01 17:31:26 C 21 47 46.73 +41 55 24.6 V M32
2024-12-03 04:57:53 C 21 57 20.366 +39 30 20.20 V T05
2024-12-03 05:02:28 C 21 57 21.415 +39 30 00.61 V T05
2024-12-03 05:16:45 C 21 57 24.694 +39 29 00.02 V T05
2024-12-04 17:51:10 C 22 06 41.998 +36 55 36.91 Z C23
2024-12-04 17:53:26 C 22 06 42.564 +36 55 26.94 Z C23
2024-12-04 17:55:06 C 22 06 42.898 +36 55 19.92 Z C23
2024-12-04 18:17:21 C 22 06 47.854 +36 53 45.82 Z C23
2024-12-05 16:34:57 C 22 12 10.07 +35 20 17.4 X G02
2024-12-05 16:39:03 C 22 12 10.94 +35 20 00.1 X G02
2024-12-05 16:42:57 C 22 12 11.77 +35 19 43.5 X G02
2024-12-05 17:47:42 B 22 12 26.069 +35 15 19.22 V 160
2024-12-05 17:51:59 B 22 12 26.993 +35 15 00.90 V 160
2024-12-05 17:56:12 B 22 12 27.878 +35 14 42.72 V 160
2024-12-07 02:57:05 C 22 19 58.591 +32 56 16.40 V 703
2024-12-07 03:00:27 C 22 19 59.257 +32 56 01.54 V 703
2024-12-07 03:03:48 C 22 19 59.891 +32 55 47.46 V 703
2024-12-07 03:07:09 C 22 20 00.568 +32 55 32.88 V 703
2024-12-07 08:00:09 C 22 21 02.604 +32 35 05.71 V T08
2024-12-07 08:37:41 C 22 21 10.445 +32 32 20.44 V T08
2024-12-07 08:49:44 C 22 21 13.049 +32 31 27.55 V T08
2024-12-08 02:08:08 C 22 25 02.579 +31 19 13.44 V 703
2024-12-08 02:11:28 C 22 25 03.148 +31 19 00.19 V 703
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)