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 05:10:27 C 13 05 53.24 +53 29 25.5 q L28
2018-12-10 05:10:53 C 13 05 53.46 +53 29 26.2 q L28
2018-12-10 05:11:06 C 13 05 53.55 +53 29 25.8 q L28
2018-12-10 05:11:32 C 13 05 53.84 +53 29 25.1 q L28
2018-12-10 05:11:45 C 13 05 53.78 +53 29 24.2 q L28
2018-12-10 05:12:12 C 13 05 54.04 +53 29 23.9 q L28
2018-12-10 05:12:25 C 13 05 54.17 +53 29 23.8 q L28
2018-12-10 05:12:51 C 13 05 54.37 +53 29 22.5 q L28
2018-12-10 05:13:04 C 13 05 54.46 +53 29 22.3 q L28
2018-12-10 05:14:09 C 13 05 54.88 +53 29 20.4 q L28
2018-12-10 05:14:34 C 13 05 55.04 +53 29 21.2 q L28
2018-12-10 05:14:47 C 13 05 55.11 +53 29 20.0 q L28
2018-12-10 05:15:00 C 13 05 55.16 +53 29 19.9 q L28
2018-12-10 05:15:26 C 13 05 55.42 +53 29 19.2 q L28
2018-12-10 05:16:05 C 13 05 55.66 +53 29 18.2 q L28
2018-12-10 05:16:18 C 13 05 55.77 +53 29 18.5 q L28
2018-12-10 05:16:31 C 13 05 55.79 +53 29 17.5 q L28
2018-12-10 05:16:58 C 13 05 55.99 +53 29 17.7 q L28
2018-12-10 05:17:11 C 13 05 56.09 +53 29 16.6 q L28
2018-12-10 05:17:37 C 13 05 56.21 +53 29 15.8 q L28
2018-12-10 05:18:03 C 13 05 56.47 +53 29 16.4 q L28
2018-12-10 05:18:42 C 13 05 56.65 +53 29 15.4 q L28
2018-12-11 13:49:00 S 13 22 32.458 +52 29 15.76 L C51
2018-12-11 16:57:19 S 13 24 17.335 +52 22 16.97 L C51
2018-12-11 21:40:04 S 13 26 57.701 +52 11 25.80 L C51
2018-12-16 01:32:31 C 14 39 00.90 +44 54 53.3 V Z80
2018-12-16 01:34:05 C 14 39 02.35 +44 54 42.6 V Z80
2018-12-16 01:35:46 C 14 39 03.84 +44 54 31.5 V Z80
2018-12-16 01:37:25 C 14 39 05.35 +44 54 20.4 V Z80
2018-12-16 01:39:05 C 14 39 06.86 +44 54 08.9 V Z80
2018-12-16 01:40:46 C 14 39 08.37 +44 53 57.7 V Z80
2018-12-17 01:57:50 C 15 01 19.25 +41 31 17.8 V Z80
2018-12-17 01:59:24 C 15 01 20.76 +41 31 03.5 V Z80
2018-12-17 02:01:05 C 15 01 22.41 +41 30 48.3 V Z80
2018-12-17 02:02:44 C 15 01 24.04 +41 30 33.6 V Z80
2018-12-17 02:04:24 C 15 01 25.66 +41 30 18.6 V Z80
2018-12-17 02:06:05 C 15 01 27.33 +41 30 03.5 V Z80
2019-09-23 12:18:12 C 09 16 15.05 +16 10 35.8 U I41
2019-09-23 12:25:24 C 09 16 16.21 +16 10 28.8 U I41
2019-09-23 12:32:36 C 09 16 17.37 +16 10 21.5 U I41
2019-09-23 12:39:49 C 09 16 18.53 +16 10 14.6 U I41
2019-10-03 11:54:51 C 09 55 02.96 +11 57 51.2 V 703
2019-10-03 12:01:55 C 09 55 04.02 +11 57 43.2 V 703
2019-10-03 12:09:00 C 09 55 05.16 +11 57 35.5 V 703
2019-10-03 12:16:04 C 09 55 06.25 +11 57 27.4 V 703
2019-10-05 12:24:08 C 10 02 56.77 +11 02 43.6 U I41
2019-10-05 12:31:12 C 10 02 57.92 +11 02 35.5 U I41
2019-10-05 12:38:15 C 10 02 59.07 +11 02 27.5 U I41
2019-10-05 12:45:20 C 10 03 00.25 +11 02 19.5 U I41
2019-10-09 12:28:22 C 10 18 40.37 +09 09 52.2 U I41
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)