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
2021-12-21 17:07:51 B 22 11 57.70 +14 05 48.5 q M18
2021-12-21 17:20:37 B 22 11 59.44 +14 03 25.2 q M18
2021-12-21 17:21:56 B 22 11 59.63 +14 03 10.0 q M18
2021-12-21 17:36:11 B 22 12 01.59 +14 00 30.4 q M18
2021-12-21 20:45:08 C 22 12 30.90 +13 25 12.6 V Z80
2021-12-21 20:46:57 C 22 12 31.21 +13 24 52.2 V Z80
2021-12-21 20:48:46 C 22 12 31.51 +13 24 31.8 V Z80
2021-12-22 16:12:50 B 22 15 51.19 +09 55 01.7 q M18
2021-12-22 16:30:12 B 22 15 53.24 +09 51 56.7 q M18
2021-12-22 16:45:09 B 22 15 54.84 +09 49 23.7 q M18
2021-12-22 18:48:34 B 22 16 10.22 +09 27 34.9 q M18
2021-12-23 02:23:36 C 22 17 19.28 +08 09 45.5 V 703
2021-12-23 02:31:47 C 22 17 20.23 +08 08 20.7 V 703
2021-12-23 03:18:04 C 22 17 25.72 +08 00 21.7 V 703
2021-12-23 17:44:19 C 22 19 35.35 +05 34 56.6 V L92
2021-12-23 17:45:26 C 22 19 35.56 +05 34 43.6 V L92
2021-12-23 17:46:33 C 22 19 35.66 +05 34 34.5 V L92
2021-12-23 23:42:16 C 22 20 26.58 +04 36 53.6 X W34
2021-12-23 23:53:04 C 22 20 27.61 +04 35 08.6 X W34
2021-12-24 00:03:42 C 22 20 28.62 +04 33 25.3 X W34
2022-06-25 11:19:32 C 03 16 58.310 +23 56 13.42 U I41
2022-06-25 11:22:56 C 03 16 58.879 +23 56 15.50 U I41
2022-06-25 11:26:19 C 03 16 59.410 +23 56 17.48 U I41
2022-06-25 11:29:43 C 03 16 59.959 +23 56 19.28 U I41
2022-06-25 11:33:07 C 03 17 00.499 +23 56 21.59 U I41
2022-07-18 11:31:56 C 04 47 09.319 +27 36 05.18 U I41
2022-07-18 11:35:20 C 04 47 09.881 +27 36 06.08 U I41
2022-07-18 11:38:43 C 04 47 10.459 +27 36 06.80 U I41
2022-07-18 11:42:07 C 04 47 11.009 +27 36 07.20 U I41
2022-07-18 11:45:31 C 04 47 11.580 +27 36 08.21 U I41
2022-08-05 11:49:03 C 05 59 09.300 +27 49 10.20 U I41
2022-08-05 11:52:31 C 05 59 09.881 +27 49 09.70 U I41
2022-08-05 11:56:02 C 05 59 10.459 +27 49 09.41 U I41
2022-08-05 12:03:02 C 05 59 11.621 +27 49 08.51 U I41
2022-08-06 11:48:34 C 06 03 09.230 +27 45 44.78 U I41
2022-08-06 11:52:04 C 06 03 09.809 +27 45 44.39 U I41
2022-08-06 11:59:04 C 06 03 10.961 +27 45 43.49 U I41
2022-08-06 12:02:34 C 06 03 11.570 +27 45 43.20 U I41
2022-09-27 11:54:16 C 09 27 07.636 +15 11 00.42 V G96
2022-09-27 12:00:30 C 09 27 08.644 +15 10 54.34 V G96
2022-09-27 12:06:43 C 09 27 09.648 +15 10 48.04 V G96
2022-09-27 12:12:58 C 09 27 10.624 +15 10 41.66 V G96
2024-09-28 20:10:36 C 13 38 43.466 +45 36 09.58 V Z80
2024-09-28 20:27:13 C 13 38 45.226 +45 36 40.97 V Z80
2024-10-03 20:05:36 C 13 52 28.946 +49 25 24.02 V Z80
2024-10-03 20:13:43 C 13 52 29.981 +49 25 38.39 V Z80
2024-10-03 20:21:49 C 13 52 30.967 +49 25 52.43 V Z80
2024-10-05 19:29:43 C 13 58 29.935 +50 50 52.94 V Z80
2024-10-05 19:41:35 C 13 58 31.543 +50 51 12.20 V Z80
2024-10-12 20:26:47 C 14 23 38.520 +55 30 51.80 V Z80
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)