2003 WH166

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5575108776 ± 3.21e-08
Semi-major axis (a)1.9359097753 AU ± 1.00e-08
Inclination (i)0.70223831° ± 4.60e-06
Long. of Asc. Node (Ω)185.67514151° ± 2.13e-04
Arg. of Perihelion (ω)329.39293772° ± 2.11e-04
Mean Anomaly (M)28.49590267° ± 1.35e-05
Mean Motion (n)0.3659187022°/day ± 2.84e-09
Perihelion dist (q)0.85661902 AU ± 6.23e-08
Aphelion dist (Q)3.01520053 AU ± 6.40e-08
Orbital Period2.69356630 yr ± 2.09e-08
Physical Parameters
H (abs. magnitude)22.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.462″
Uncertainty0
Orbit TypeApollo
MOID0.004876 AU
Observations Used163
Radar Obs Used3
Oppositions6
Arc Total2003-2012
First Observation Used2003-11-19
Last Observation Used2012-05-27
Observations (174)
Date Type RA Dec Mag Band Observatory
2012-04-27 19:43:27 C 11 50 15.41 +07 29 58.5 u C73
2012-04-27 19:44:07 C 11 50 16.02 +07 29 54.0 u C73
2012-04-27 19:44:46 C 11 50 16.64 +07 29 49.6 u C73
2012-04-27 19:45:26 C 11 50 17.20 +07 29 45.2 u C73
2012-04-27 19:46:05 C 11 50 17.76 +07 29 41.1 u C73
2012-04-27 19:46:45 C 11 50 18.31 +07 29 37.0 u C73
2012-04-27 19:47:25 C 11 50 18.90 +07 29 32.7 u C73
2012-04-27 19:48:05 C 11 50 19.50 +07 29 28.3 u C73
2012-04-27 19:48:44 C 11 50 20.10 +07 29 23.8 u C73
2012-04-27 19:49:24 C 11 50 20.77 +07 29 19.1 u C73
2012-04-27 19:50:03 C 11 50 21.28 +07 29 15.0 u C73
2012-04-27 19:50:43 C 11 50 21.96 +07 29 10.3 u C73
2012-04-27 19:51:23 C 11 50 22.52 +07 29 06.3 u C73
2012-04-27 19:52:01 C 11 50 23.12 +07 29 01.9 u C73
2012-04-27 19:52:41 C 11 50 23.71 +07 28 57.4 u C73
2012-04-27 19:53:22 C 11 50 24.29 +07 28 53.2 u C73
2012-04-27 19:54:02 C 11 50 24.79 +07 28 49.3 u C73
2012-04-27 19:54:41 C 11 50 25.45 +07 28 44.6 u C73
2012-04-27 19:55:20 C 11 50 26.03 +07 28 40.2 u C73
2012-04-27 19:56:00 C 11 50 26.63 +07 28 35.7 u C73
2012-04-27 19:56:40 C 11 50 27.20 +07 28 31.5 u C73
2012-04-27 19:57:19 C 11 50 27.82 +07 28 27.0 u C73
2012-04-27 19:57:58 C 11 50 28.38 +07 28 22.9 u C73
2012-04-27 19:58:38 C 11 50 29.01 +07 28 18.3 u C73
2012-04-27 19:59:17 C 11 50 29.53 +07 28 14.3 u C73
2012-04-27 19:59:57 C 11 50 30.23 +07 28 09.3 u C73
2012-04-27 20:00:36 C 11 50 30.73 +07 28 05.5 u C73
2012-04-27 20:01:16 C 11 50 31.32 +07 28 01.2 u C73
2012-04-27 20:01:55 C 11 50 31.92 +07 27 56.7 u C73
2012-04-27 20:02:35 C 11 50 32.53 +07 27 52.4 u C73
2012-04-27 20:03:14 C 11 50 33.09 +07 27 48.1 u C73
2012-04-27 20:03:53 C 11 50 33.65 +07 27 43.8 u C73
2012-04-28 21:50:25 C 12 12 21.59 +04 49 12.1 u C01
2012-04-28 21:53:10 C 12 12 23.63 +04 48 56.8 u C01
2012-04-28 21:54:33 C 12 12 24.71 +04 48 48.5 u C01
2012-04-28 23:11:53 C 12 13 22.62 +04 41 28.7 u C01
2012-04-28 23:13:14 C 12 13 23.60 +04 41 20.2 u C01
2012-04-28 23:16:01 C 12 13 25.64 +04 41 05.0 u C01
2012-04-29 05:39:51 C 12 18 16.23 +04 06 09.7 r 703
2012-04-29 05:49:35 C 12 18 23.04 +04 05 16.4 r 703
2012-04-29 05:59:16 C 12 18 29.84 +04 04 23.7 r 703
2012-04-29 06:09:10 C 12 18 36.79 +04 03 30.0 r 703
2012-04-29 22:19:04 C 12 29 49.66 +02 39 34.5 u 160
2012-04-29 22:22:11 C 12 29 51.63 +02 39 19.1 u 160
2012-04-29 22:25:19 C 12 29 53.62 +02 39 04.0 u 160
2012-04-30 03:24:04 C 12 33 11.26 +02 15 16.2 17.1 c 704
2012-04-30 03:38:58 C 12 33 20.26 +02 14 05.7 17.3 c 704
2012-04-30 03:53:54 C 12 33 29.34 +02 12 54.7 17.0 c 704
2012-04-30 04:08:52 C 12 33 38.36 +02 11 43.6 17.0 c 704
2012-04-30 04:23:48 C 12 33 47.36 +02 10 33.1 17.1 c 704
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-04-25 00:44:00 50268795.8 8 us 2380 -1 -1
2012-04-26 00:19:00 52786251.12 2 us 2380 -1 -1
2012-04-30 02:48:00 71748923.46 8 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)