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
2024-12-12 17:31:35 B 22 46 44.119 +23 42 22.86 V 160
2024-12-12 17:35:52 B 22 46 44.791 +23 42 05.76 V 160
2024-12-12 17:40:05 B 22 46 45.458 +23 41 48.73 V 160
2024-12-13 02:16:08 C 22 48 15.275 +23 07 52.32 V 703
2024-12-13 02:19:26 C 22 48 15.779 +23 07 38.96 V 703
2024-12-13 02:22:44 C 22 48 16.283 +23 07 25.79 V 703
2024-12-13 02:26:02 C 22 48 16.704 +23 07 12.14 V 703
2024-12-13 19:10:41 C 22 51 08.87 +22 00 37.6 V M32
2024-12-13 19:12:59 C 22 51 09.24 +22 00 28.2 V M32
2024-12-13 19:15:18 C 22 51 09.60 +22 00 19.1 V M32
2024-12-13 19:17:36 C 22 51 09.96 +22 00 09.9 V M32
2024-12-13 19:19:55 C 22 51 10.33 +22 00 00.5 V M32
2024-12-14 06:02:09 C 22 52 58.525 +21 18 56.68 X F51
2024-12-14 06:05:56 C 22 52 59.062 +21 18 41.76 V T05
2024-12-14 06:10:32 C 22 52 59.735 +21 18 23.37 X F51
2024-12-14 06:10:33 C 22 52 59.738 +21 18 23.33 V T05
2024-12-14 06:18:57 C 22 53 00.958 +21 17 49.86 X F51
2024-12-14 06:19:12 C 22 53 00.991 +21 17 48.80 V T05
2024-12-14 06:34:23 C 22 53 03.211 +21 16 48.36 V T05
2024-12-15 05:10:49 C 22 56 47.357 +19 49 34.35 X F51
2024-12-15 05:39:07 C 22 56 51.225 +19 47 44.40 X F51
2024-12-15 05:53:16 C 22 56 53.177 +19 46 49.00 X F51
2024-12-15 06:29:10 C 22 56 58.070 +19 44 30.98 V T08
2024-12-15 06:33:49 C 22 56 58.733 +19 44 12.66 V T08
2024-12-15 07:02:44 C 22 57 02.822 +19 42 19.58 V T08
2024-12-15 12:40:16 C 22 57 57.33 +19 20 31.5 V D29
2024-12-15 12:52:17 C 22 57 59.05 +19 19 44.6 V D29
2024-12-15 13:04:18 C 22 58 00.79 +19 18 57.7 V D29
2024-12-16 05:03:01 C 23 00 33.509 +18 18 59.44 V T08
2024-12-16 05:07:46 C 23 00 34.128 +18 18 41.44 V T08
2024-12-16 05:15:14 C 23 00 35.102 +18 18 12.96 V T08
2024-12-16 05:29:23 C 23 00 36.955 +18 17 19.14 V T08
2024-12-16 05:32:35 C 23 00 37.446 +18 17 05.20 X F52
2024-12-16 05:46:29 C 23 00 39.283 +18 16 12.19 X F52
2024-12-16 06:00:20 C 23 00 41.118 +18 15 19.10 X F52
2024-12-16 18:38:55 B 23 02 38.218 +17 27 29.63 V 160
2024-12-16 18:45:29 B 23 02 39.103 +17 27 04.97 V 160
2024-12-16 18:51:58 B 23 02 39.977 +17 26 40.60 V 160
2024-12-17 06:38:29 C 23 04 24.514 +16 43 37.81 V T05
2024-12-17 06:43:04 C 23 04 25.109 +16 43 20.60 V T05
2024-12-17 07:14:10 C 23 04 29.194 +16 41 23.71 V T05
2024-12-17 07:22:00 C 23 04 30.245 +16 40 54.19 V T05
2024-12-18 06:11:03 C 23 07 51.290 +15 17 51.50 V T05
2024-12-18 06:15:39 C 23 07 51.869 +15 17 34.62 V T05
2024-12-18 06:23:29 C 23 07 52.824 +15 17 05.89 V T05
2024-12-18 06:52:37 C 23 07 56.460 +15 15 18.86 V T05
2024-12-19 03:53:05 C 23 10 54.386 +14 00 00.97 V 703
2024-12-19 03:56:23 C 23 10 54.793 +13 59 49.24 V 703
2024-12-19 03:59:40 C 23 10 55.204 +13 59 37.54 V 703
2024-12-19 04:02:58 C 23 10 55.603 +13 59 25.44 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)