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
2018-12-10 03:29:56 C 13 05 11.00 +53 31 29.9 q L28
2018-12-10 03:30:09 C 13 05 11.10 +53 31 30.1 q L28
2018-12-10 03:30:22 C 13 05 11.28 +53 31 29.5 q L28
2018-12-10 03:30:35 C 13 05 11.33 +53 31 29.2 q L28
2018-12-10 03:30:48 C 13 05 11.35 +53 31 29.4 q L28
2018-12-10 03:31:01 C 13 05 11.51 +53 31 28.4 q L28
2018-12-10 03:31:14 C 13 05 11.53 +53 31 29.0 q L28
2018-12-10 03:31:26 C 13 05 11.63 +53 31 28.4 q L28
2018-12-10 03:31:39 C 13 05 11.76 +53 31 27.8 q L28
2018-12-10 03:31:52 C 13 05 11.81 +53 31 27.6 q L28
2018-12-10 03:32:05 C 13 05 11.91 +53 31 27.5 q L28
2018-12-10 03:32:18 C 13 05 12.05 +53 31 26.7 q L28
2018-12-10 03:32:31 C 13 05 12.10 +53 31 27.2 q L28
2018-12-10 03:32:44 C 13 05 12.27 +53 31 26.5 q L28
2018-12-10 03:32:57 C 13 05 12.27 +53 31 27.0 q L28
2018-12-10 03:33:10 C 13 05 12.37 +53 31 26.4 q L28
2018-12-10 03:33:23 C 13 05 12.51 +53 31 25.6 q L28
2018-12-10 03:33:36 C 13 05 12.57 +53 31 26.5 q L28
2018-12-10 03:33:50 C 13 05 12.67 +53 31 25.6 q L28
2018-12-10 03:34:03 C 13 05 12.80 +53 31 25.3 q L28
2018-12-10 03:34:16 C 13 05 12.89 +53 31 25.4 q L28
2018-12-10 03:34:29 C 13 05 12.97 +53 31 24.6 q L28
2018-12-10 03:34:42 C 13 05 13.02 +53 31 25.0 q L28
2018-12-10 03:34:55 C 13 05 13.09 +53 31 24.5 q L28
2018-12-10 03:35:08 C 13 05 13.26 +53 31 23.9 q L28
2018-12-10 03:35:21 C 13 05 13.35 +53 31 23.6 q L28
2018-12-10 03:35:34 C 13 05 13.34 +53 31 23.8 q L28
2018-12-10 03:35:47 C 13 05 13.48 +53 31 23.0 q L28
2018-12-10 03:36:12 C 13 05 13.77 +53 31 22.5 q L28
2018-12-10 03:36:25 C 13 05 13.75 +53 31 22.8 q L28
2018-12-10 03:36:51 C 13 05 14.00 +53 31 22.3 q L28
2018-12-10 03:37:04 C 13 05 14.11 +53 31 22.0 q L28
2018-12-10 03:37:17 C 13 05 14.11 +53 31 21.6 q L28
2018-12-10 03:37:30 C 13 05 14.28 +53 31 21.2 q L28
2018-12-10 03:37:43 C 13 05 14.35 +53 31 20.9 q L28
2018-12-10 03:37:56 C 13 05 14.41 +53 31 21.0 q L28
2018-12-10 03:38:09 C 13 05 14.51 +53 31 20.3 q L28
2018-12-10 03:38:23 C 13 05 14.61 +53 31 20.5 q L28
2018-12-10 03:38:36 C 13 05 14.74 +53 31 19.9 q L28
2018-12-10 03:38:49 C 13 05 14.89 +53 31 19.5 q L28
2018-12-10 03:39:02 C 13 05 14.92 +53 31 19.5 q L28
2018-12-10 03:39:15 C 13 05 15.06 +53 31 19.1 q L28
2018-12-10 03:39:28 C 13 05 15.16 +53 31 19.4 q L28
2018-12-10 03:39:41 C 13 05 15.14 +53 31 18.9 q L28
2018-12-10 03:39:54 C 13 05 15.32 +53 31 18.9 q L28
2018-12-10 03:40:07 C 13 05 15.36 +53 31 18.4 q L28
2018-12-10 03:40:20 C 13 05 15.43 +53 31 18.1 q L28
2018-12-10 03:40:33 C 13 05 15.61 +53 31 17.7 q L28
2018-12-10 03:40:45 C 13 05 15.61 +53 31 17.8 q L28
2018-12-10 03:40:58 C 13 05 15.79 +53 31 17.2 q L28
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)