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 04:27:59 C 13 05 35.70 +53 30 21.0 q L28
2018-12-10 04:28:12 C 13 05 35.67 +53 30 20.4 q L28
2018-12-10 04:28:25 C 13 05 35.81 +53 30 20.1 q L28
2018-12-10 04:28:51 C 13 05 35.96 +53 30 20.1 q L28
2018-12-10 04:29:04 C 13 05 36.09 +53 30 19.3 q L28
2018-12-10 04:29:17 C 13 05 36.17 +53 30 20.0 q L28
2018-12-10 04:29:30 C 13 05 36.24 +53 30 18.9 q L28
2018-12-10 04:29:57 C 13 05 36.52 +53 30 18.9 q L28
2018-12-10 04:30:10 C 13 05 36.57 +53 30 17.7 q L28
2018-12-10 04:30:23 C 13 05 36.58 +53 30 18.0 q L28
2018-12-10 04:30:36 C 13 05 36.71 +53 30 17.8 q L28
2018-12-10 04:30:49 C 13 05 36.75 +53 30 17.0 q L28
2018-12-10 04:31:02 C 13 05 36.81 +53 30 17.5 q L28
2018-12-10 04:31:15 C 13 05 36.98 +53 30 17.2 q L28
2018-12-10 04:31:28 C 13 05 37.06 +53 30 16.2 q L28
2018-12-10 04:31:41 C 13 05 37.20 +53 30 16.9 q L28
2018-12-10 04:31:54 C 13 05 37.25 +53 30 15.4 q L28
2018-12-10 04:32:07 C 13 05 37.34 +53 30 16.2 q L28
2018-12-10 04:32:19 C 13 05 37.37 +53 30 15.4 q L28
2018-12-10 04:32:58 C 13 05 37.62 +53 30 14.6 q L28
2018-12-10 04:33:11 C 13 05 37.79 +53 30 14.5 q L28
2018-12-10 04:33:24 C 13 05 37.90 +53 30 14.2 q L28
2018-12-10 04:33:37 C 13 05 38.04 +53 30 13.0 q L28
2018-12-10 04:33:50 C 13 05 38.06 +53 30 13.5 q L28
2018-12-10 04:34:03 C 13 05 38.09 +53 30 13.2 q L28
2018-12-10 04:34:16 C 13 05 38.27 +53 30 12.8 q L28
2018-12-10 04:34:43 C 13 05 38.42 +53 30 12.0 q L28
2018-12-10 04:35:09 C 13 05 38.54 +53 30 12.2 q L28
2018-12-10 04:35:22 C 13 05 38.74 +53 30 12.0 q L28
2018-12-10 04:35:48 C 13 05 38.94 +53 30 10.7 q L28
2018-12-10 04:36:01 C 13 05 38.99 +53 30 11.1 q L28
2018-12-10 04:36:14 C 13 05 39.01 +53 30 11.1 q L28
2018-12-10 04:36:27 C 13 05 39.16 +53 30 10.3 q L28
2018-12-10 04:36:40 C 13 05 39.27 +53 30 10.3 q L28
2018-12-10 04:36:52 C 13 05 39.32 +53 30 09.5 q L28
2018-12-10 04:37:05 C 13 05 39.48 +53 30 09.3 q L28
2018-12-10 04:37:18 C 13 05 39.50 +53 30 08.9 q L28
2018-12-10 04:37:31 C 13 05 39.60 +53 30 09.1 q L28
2018-12-10 04:37:44 C 13 05 39.75 +53 30 08.1 q L28
2018-12-10 04:37:57 C 13 05 39.75 +53 30 08.0 q L28
2018-12-10 04:38:10 C 13 05 39.95 +53 30 07.5 q L28
2018-12-10 04:38:23 C 13 05 40.00 +53 30 08.3 q L28
2018-12-10 04:38:36 C 13 05 40.11 +53 30 07.8 q L28
2018-12-10 04:39:16 C 13 05 40.32 +53 30 06.3 q L28
2018-12-10 04:39:29 C 13 05 40.37 +53 30 06.8 q L28
2018-12-10 04:39:55 C 13 05 40.57 +53 30 05.3 q L28
2018-12-10 04:40:08 C 13 05 40.60 +53 30 05.2 q L28
2018-12-10 04:40:34 C 13 05 40.85 +53 30 04.8 q L28
2018-12-10 04:41:00 C 13 05 41.08 +53 30 04.5 q L28
2018-12-10 04:41:13 C 13 05 41.21 +53 30 04.4 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)