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
2003-10-04 03:20:14 C 08 13 29.85 +31 38 34.2 J95
2003-10-04 10:52:29 C 08 14 34.09 +31 33 30.9 c G90
2003-10-04 11:02:04 C 08 14 35.43 +31 33 24.5 c G90
2003-10-04 11:11:48 C 08 14 36.75 +31 33 18.1 c G90
2003-10-06 10:47:10 C 08 21 21.17 +30 59 57.6 19.5 c 704
2003-10-06 11:06:38 C 08 21 23.88 +30 59 43.9 19.5 c 704
2003-10-06 11:25:59 C 08 21 26.51 +30 59 31.0 19.8 c 704
2003-10-06 11:52:37 C 08 21 30.27 +30 59 12.0 19.7 c 704
2003-11-02 10:30:19 C 09 54 05.69 +20 21 04.9 17.6 c 704
2003-11-02 10:47:23 C 09 54 08.15 +20 20 43.2 17.9 c 704
2003-11-02 11:04:39 C 09 54 10.62 +20 20 21.6 17.8 c 704
2003-11-02 11:21:52 C 09 54 13.09 +20 19 59.8 17.9 c 704
2003-11-02 11:28:05 C 09 54 13.94 +20 19 51.8 r 448
2003-11-02 11:32:21 C 09 54 14.54 +20 19 46.3 r 448
2003-11-02 11:36:37 C 09 54 15.16 +20 19 41.1 r 448
2003-11-02 11:39:02 C 09 54 15.57 +20 19 38.2 18.2 c 704
2003-11-02 11:48:55 C 09 54 17.03 +20 19 24.7 c 670
2003-11-02 13:13:02 C 09 54 29.05 +20 17 39.1 c 670
2003-12-09 12:13:39 C 12 18 06.27 -04 58 31.6 c 926
2003-12-09 12:15:29 C 12 18 06.58 -04 58 35.7 c 926
2005-12-29 01:52:41 C 22 18 27.86 -03 03 05.5 o 696
2005-12-29 01:56:47 C 22 18 28.51 -03 03 01.9 o 696
2006-09-06 11:37:54 C 06 47 15.850 +39 03 53.91 o 673
2006-09-06 11:45:36 C 06 47 16.715 +39 03 52.75 o 673
2006-09-06 11:51:24 C 06 47 17.378 +39 03 52.02 o 673
2006-09-10 02:16:33 C 06 57 31.63 +38 45 59.1 r 204
2006-09-10 02:24:06 C 06 57 32.52 +38 45 56.8 r 204
2006-09-24 00:52:28 C 07 39 44.77 +36 51 50.8 19.2 r 084
2006-10-02 10:13:18 C 08 06 15.25 +35 07 13.4 17.7 c 704
2006-10-02 10:55:34 C 08 06 20.73 +35 06 49.5 18.3 c 704
2006-10-02 11:14:22 C 08 06 23.18 +35 06 39.5 17.8 c 704
2006-10-02 11:33:21 C 08 06 25.63 +35 06 29.3 18.0 c 704
2006-10-12 01:12:44 C 08 37 11.68 +32 30 36.2 17.1 r 084
2006-10-19 01:17:07 C 09 00 00.25 +30 10 12.9 15.4 r 084
2006-10-19 01:21:18 C 09 00 00.81 +30 10 09.1 15.2 r 084
2006-11-03 10:55:34 C 09 51 07.48 +23 32 07.5 18.3 c 704
2006-11-03 11:13:39 C 09 51 09.97 +23 31 44.5 18.2 c 704
2006-11-03 11:32:00 C 09 51 12.46 +23 31 21.9 18.3 c 704
2006-11-03 11:49:46 C 09 51 14.92 +23 30 59.9 18.7 c 704
2006-11-15 10:18:13 C 10 32 44.99 +16 40 59.5 17.9 c 704
2006-11-15 10:34:53 C 10 32 47.37 +16 40 32.6 18.0 c 704
2006-11-15 10:51:26 C 10 32 49.79 +16 40 05.8 18.1 c 704
2006-11-15 11:08:23 C 10 32 52.24 +16 39 39.6 17.9 c 704
2006-11-18 10:41:32 C 10 43 39.95 +14 41 23.3 17.8 c 704
2006-11-18 11:01:45 C 10 43 42.90 +14 40 49.0 18.3 c 704
2006-11-18 11:40:40 C 10 43 48.63 +14 39 43.6 18.1 c 704
2006-11-18 11:59:16 C 10 43 51.37 +14 39 13.0 18.1 c 704
2006-11-19 10:28:33 C 10 47 18.02 +14 00 35.7 18.6 c 704
2006-11-19 10:46:35 C 10 47 20.75 +14 00 05.5 19.1 c 704
2006-11-19 11:04:36 C 10 47 23.42 +13 59 34.5 19.0 c 704
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)