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
2015-11-24 09:52:03 C 10 55 36.21 +35 28 21.5 u H21
2015-11-24 09:54:01 C 10 55 36.43 +35 28 18.2 u H21
2015-11-24 09:55:58 C 10 55 36.67 +35 28 15.1 u H21
2015-11-24 09:57:56 C 10 55 36.91 +35 28 12.2 u H21
2015-11-24 09:59:53 C 10 55 37.14 +35 28 09.3 u H21
2015-11-24 10:01:51 C 10 55 37.40 +35 28 06.0 u H21
2015-11-24 10:03:48 C 10 55 37.61 +35 28 03.3 u H21
2015-11-24 10:05:45 C 10 55 37.86 +35 28 00.1 u H21
2015-11-24 10:07:42 C 10 55 38.09 +35 27 57.2 u H21
2015-11-24 10:09:39 C 10 55 38.33 +35 27 54.0 u H21
2015-11-24 10:11:35 C 10 55 38.57 +35 27 51.1 u H21
2015-11-24 10:13:33 C 10 55 38.78 +35 27 48.0 u H21
2015-11-24 10:15:30 C 10 55 39.02 +35 27 45.0 u H21
2015-11-24 10:17:27 C 10 55 39.27 +35 27 41.9 u H21
2015-11-24 10:20:46 C 10 55 39.67 +35 27 36.6 u H21
2015-11-25 10:04:07 C 10 58 53.31 +34 47 50.3 u H21
2015-11-25 10:06:04 C 10 58 53.57 +34 47 47.1 u H21
2015-11-25 10:08:02 C 10 58 53.80 +34 47 44.0 u H21
2015-11-25 10:10:00 C 10 58 54.04 +34 47 40.6 u H21
2015-11-25 10:11:57 C 10 58 54.28 +34 47 37.4 u H21
2015-11-25 10:13:55 C 10 58 54.52 +34 47 34.3 u H21
2015-11-25 10:15:52 C 10 58 54.77 +34 47 31.0 u H21
2015-11-25 10:17:50 C 10 58 55.02 +34 47 27.9 u H21
2015-11-25 10:19:48 C 10 58 55.25 +34 47 24.5 u H21
2015-11-25 10:21:45 C 10 58 55.50 +34 47 21.3 u H21
2015-11-25 10:23:43 C 10 58 55.74 +34 47 18.0 u H21
2015-11-25 10:25:41 C 10 58 55.98 +34 47 14.7 u H21
2015-11-25 10:27:38 C 10 58 56.21 +34 47 11.4 u H21
2015-11-25 10:29:36 C 10 58 56.46 +34 47 08.2 u H21
2015-11-25 10:31:34 C 10 58 56.70 +34 47 05.1 u H21
2015-11-25 10:33:31 C 10 58 56.94 +34 47 01.9 u H21
2015-11-25 10:35:28 C 10 58 57.18 +34 46 58.5 u H21
2015-11-25 10:38:24 C 10 58 57.54 +34 46 53.6 u H21
2015-11-27 03:00:10 C 11 04 37.92 +33 34 06.0 q C23
2015-11-27 03:03:28 C 11 04 38.37 +33 34 00.2 q C23
2015-11-27 03:07:11 C 11 04 38.85 +33 33 53.5 q C23
2015-11-27 03:10:54 C 11 04 39.36 +33 33 46.7 q C23
2015-11-28 03:01:10 C 11 08 08.85 +32 48 03.9 o Z22
2015-11-28 03:13:33 C 11 08 10.60 +32 47 40.7 o Z22
2015-11-28 03:24:16 C 11 08 12.05 +32 47 21.1 o Z22
2015-11-28 03:31:41 C 11 08 11.13 +32 47 01.5 q 160
2015-11-28 03:33:56 C 11 08 11.41 +32 46 57.2 q 160
2015-11-28 03:36:11 C 11 08 11.76 +32 46 53.2 q 160
2015-11-29 02:33:14 C 11 11 37.05 +32 00 07.9 u 118
2015-11-29 02:42:42 C 11 11 38.37 +31 59 48.8 u 118
2015-11-30 03:03:31 C 11 15 23.72 +31 07 46.0 o Z22
2015-11-30 03:14:31 C 11 15 25.30 +31 07 22.7 o Z22
2015-11-30 03:25:44 C 11 15 27.01 +31 06 59.4 o Z22
2015-12-03 10:40:36 C 11 28 17.41 +27 54 50.2 u H21
2015-12-03 10:42:34 C 11 28 17.72 +27 54 45.0 u H21
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)