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
2024-12-08 02:14:48 C 22 25 03.792 +31 18 45.47 V 703
2024-12-08 02:18:08 C 22 25 04.429 +31 18 31.25 V 703
2024-12-08 06:05:08 C 22 25 51.101 +31 02 59.06 V T08
2024-12-08 06:09:51 C 22 25 51.984 +31 02 38.87 V T08
2024-12-08 06:21:15 C 22 25 54.125 +31 01 49.76 V T08
2024-12-08 16:08:42 C 22 28 02.03 +30 20 20.5 X G02
2024-12-08 16:13:11 C 22 28 02.88 +30 20 01.6 X G02
2024-12-08 16:17:30 C 22 28 03.69 +30 19 43.7 X G02
2024-12-08 19:43:30 C 22 28 43.639 +30 05 15.07 Z C23
2024-12-08 19:45:48 C 22 28 44.088 +30 05 05.21 Z C23
2024-12-08 19:53:07 C 22 28 45.497 +30 04 34.32 Z C23
2024-12-08 19:54:18 C 22 28 45.706 +30 04 29.17 Z C23
2024-12-09 02:17:34 C 22 30 05.335 +29 38 31.81 V 703
2024-12-09 02:20:37 C 22 30 05.872 +29 38 19.03 V 703
2024-12-09 02:23:40 C 22 30 06.430 +29 38 06.11 V 703
2024-12-09 02:26:43 C 22 30 06.973 +29 37 53.18 V 703
2024-12-09 06:09:10 C 22 30 51.038 +29 22 44.98 V T05
2024-12-09 06:13:47 C 22 30 51.871 +29 22 25.25 V T05
2024-12-09 06:25:02 C 22 30 53.897 +29 21 37.26 V T05
2024-12-09 06:44:05 C 22 30 57.338 +29 20 15.61 V T05
2024-12-10 02:17:08 C 22 34 54.332 +27 59 16.66 V 703
2024-12-10 02:20:38 C 22 34 54.934 +27 59 01.93 V 703
2024-12-10 02:24:08 C 22 34 55.535 +27 58 47.14 V 703
2024-12-10 02:27:37 C 22 34 56.140 +27 58 32.45 V 703
2024-12-10 06:24:02 C 22 35 40.848 +27 42 33.52 V T05
2024-12-10 06:28:38 C 22 35 41.645 +27 42 14.00 V T05
2024-12-10 06:37:58 C 22 35 43.253 +27 41 34.48 V T05
2024-12-10 06:54:36 C 22 35 46.159 +27 40 24.06 V T05
2024-12-10 10:53:45 S 22 36 33.897 +27 23 44.01 X 275
2024-12-10 23:42:33 B 22 39 01.02 +26 32 18.8 Z X33
2024-12-10 23:47:38 B 22 39 01.86 +26 31 57.1 Z X33
2024-12-10 23:52:44 B 22 39 02.70 +26 31 35.5 Z X33
2024-12-11 03:09:29 C 22 39 40.741 +26 17 18.67 V 703
2024-12-11 03:12:48 C 22 39 41.296 +26 17 04.88 V 703
2024-12-11 03:16:07 C 22 39 41.850 +26 16 51.06 V 703
2024-12-11 03:21:27 C 22 39 42.750 +26 16 28.88 V 703
2024-12-11 06:04:10 C 22 40 13.327 +26 05 48.91 V T08
2024-12-11 06:10:10 C 22 40 14.314 +26 05 23.89 V T08
2024-12-11 06:17:35 C 22 40 15.530 +26 04 53.00 V T08
2024-12-11 06:41:38 C 22 40 19.526 +26 03 12.24 V T08
2024-12-11 18:31:54 B 22 42 33.766 +25 14 40.56 V 160
2024-12-11 18:37:22 B 22 42 34.675 +25 14 18.31 V 160
2024-12-11 18:42:44 B 22 42 35.542 +25 13 56.14 V 160
2024-12-12 06:01:12 C 22 44 38.098 +24 29 00.20 V T08
2024-12-12 06:03:10 C 22 44 38.410 +24 28 52.07 V T08
2024-12-12 06:05:51 C 22 44 38.822 +24 28 41.09 V T08
2024-12-12 06:07:49 C 22 44 39.139 +24 28 32.99 V T08
2024-12-12 06:14:32 C 22 44 40.200 +24 28 05.34 V T08
2024-12-12 06:16:30 C 22 44 40.505 +24 27 57.24 V T08
2024-12-12 06:42:50 C 22 44 44.695 +24 26 08.52 V T08
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)