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
2012-05-01 04:28:48 C 12 47 50.36 +00 24 48.7 17.4 c 704
2012-05-01 04:43:39 C 12 47 57.96 +00 23 48.4 18.4 c 704
2012-05-01 04:58:50 C 12 48 05.76 +00 22 46.7 18.1 c 704
2012-05-01 05:14:03 C 12 48 13.49 +00 21 45.6 17.8 c 704
2012-05-01 05:28:57 C 12 48 21.06 +00 20 44.7 17.7 c 704
2012-05-02 21:11:20 C 13 07 12.00 -02 01 33.3 t 204
2012-05-02 21:16:50 C 13 07 14.22 -02 01 50.7 t 204
2012-05-02 21:22:21 C 13 07 16.44 -02 02 08.1 t 204
2012-05-03 06:46:28 C 13 11 03.02 -02 30 43.2 u H45
2012-05-03 06:48:48 C 13 11 03.77 -02 30 50.0 u H45
2012-05-03 06:50:24 C 13 11 04.36 -02 30 55.1 u H45
2012-05-03 06:51:27 C 13 11 04.80 -02 30 57.1 u H45
2012-05-03 06:52:36 C 13 11 05.29 -02 31 02.0 u H45
2012-05-03 06:56:05 C 13 11 06.59 -02 31 11.2 u H45
2012-05-07 00:39:13 C 13 39 10.67 -06 00 15.6 t 204
2012-05-07 00:49:18 C 13 39 13.03 -06 00 33.6 t 204
2012-05-07 00:59:23 C 13 39 15.39 -06 00 51.6 t 204
2012-05-13 05:31:32 C 14 06 12.31 -09 15 25.3 r 703
2012-05-13 05:43:52 C 14 06 13.82 -09 15 36.2 r 703
2012-05-13 05:56:17 C 14 06 15.40 -09 15 49.1 r 703
2012-05-27 05:01:00 C 14 35 39.33 -12 39 14.0 r G96
2012-05-27 05:10:58 C 14 35 39.84 -12 39 18.1 r G96
2012-05-27 05:20:48 C 14 35 40.38 -12 39 22.5 r G96
2012-05-27 05:30:42 C 14 35 40.95 -12 39 26.3 r G96
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)