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
2024-10-12 20:33:27 C 14 23 39.727 +55 31 01.13 V Z80
2024-10-12 20:39:45 C 14 23 40.795 +55 31 10.67 V Z80
2024-10-17 17:29:54 B 14 45 37.625 +58 22 04.80 X K87
2024-10-17 17:34:07 B 14 45 38.467 +58 22 10.09 X K87
2024-10-17 17:37:48 B 14 45 39.228 +58 22 14.70 X K87
2024-10-17 18:58:23 C 14 45 56.141 +58 23 58.34 V Z80
2024-10-17 19:04:26 C 14 45 57.398 +58 24 05.54 V Z80
2024-10-17 19:10:30 C 14 45 58.656 +58 24 13.14 V Z80
2024-10-19 18:40:20 C 14 56 21.770 +59 27 33.19 V Z80
2024-10-19 18:46:57 C 14 56 23.350 +59 27 40.79 V Z80
2024-10-19 18:53:37 C 14 56 24.790 +59 27 48.20 V Z80
2024-10-20 17:43:11 C 15 01 44.75 +59 56 49.9 q L04
2024-10-20 17:48:08 C 15 01 45.92 +59 56 55.3 q L04
2024-10-20 17:52:56 C 15 01 47.08 +59 57 00.5 q L04
2024-10-23 19:04:57 C 15 20 38.112 +61 23 51.36 V Z80
2024-10-23 19:11:37 C 15 20 39.948 +61 23 57.48 V Z80
2024-10-23 19:18:18 C 15 20 41.786 +61 24 04.10 V Z80
2024-10-26 20:29:11 C 15 42 29.909 +62 39 38.63 V Z80
2024-10-26 20:33:14 C 15 42 31.279 +62 39 41.18 V Z80
2024-10-26 20:37:16 C 15 42 32.520 +62 39 44.39 V Z80
2024-10-30 17:25:45 C 16 15 02.338 +63 56 18.28 X L63
2024-10-30 17:35:34 C 16 15 05.942 +63 56 23.06 X L63
2024-10-30 17:44:47 C 16 15 09.353 +63 56 27.56 X L63
2024-11-02 18:16:39 C 16 44 39.88 +64 35 03.0 V M31
2024-11-02 18:17:45 C 16 44 40.35 +64 35 03.4 V M31
2024-11-02 18:18:49 C 16 44 40.76 +64 35 03.5 V M31
2024-11-02 18:19:54 C 16 44 41.26 +64 35 03.8 V M31
2024-11-02 18:20:57 C 16 44 41.70 +64 35 04.2 V M31
2024-11-02 18:22:01 C 16 44 42.18 +64 35 04.1 V M31
2024-11-02 18:23:05 C 16 44 42.62 +64 35 04.4 V M31
2024-11-02 18:24:10 C 16 44 43.11 +64 35 04.8 V M31
2024-11-02 18:25:16 C 16 44 43.57 +64 35 05.1 V M31
2024-11-02 18:26:20 C 16 44 44.01 +64 35 05.0 V M31
2024-11-02 18:27:25 C 16 44 44.55 +64 35 05.8 V M31
2024-11-08 01:33:08 C 17 44 10.864 +64 43 33.60 V 703
2024-11-08 01:36:41 C 17 44 12.556 +64 43 31.84 V 703
2024-11-08 01:40:16 C 17 44 14.291 +64 43 30.07 V 703
2024-11-08 01:43:50 C 17 44 15.947 +64 43 27.95 V 703
2024-11-09 05:59:39 C 17 58 27.792 +64 31 53.40 V T05
2024-11-09 06:04:54 C 17 58 30.379 +64 31 49.30 V T05
2024-11-09 06:13:34 C 17 58 34.709 +64 31 42.35 V T05
2024-11-09 06:38:35 C 17 58 47.186 +64 31 22.40 V T05
2024-11-10 01:41:17 C 18 08 33.493 +64 20 50.50 V 703
2024-11-10 01:44:57 C 18 08 35.272 +64 20 47.44 V 703
2024-11-10 01:48:37 C 18 08 37.043 +64 20 44.27 V 703
2024-11-10 01:52:17 C 18 08 38.807 +64 20 41.17 V 703
2024-11-10 20:53:45 C 18 18 25.00 +64 06 18.6 V M14
2024-11-10 21:12:14 C 18 18 34.65 +64 05 59.9 V M14
2024-11-10 21:21:07 C 18 18 39.32 +64 05 51.2 V M14
2024-11-11 18:51:36 C 18 29 46.526 +63 47 49.34 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)