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
2012-04-22 04:57:58 C 08 50 30.27 +23 29 09.6 19.2 c 704
2012-04-22 05:13:44 C 08 50 54.46 +23 27 48.3 18.9 c 704
2012-04-23 03:49:18 C 09 26 32.74 +21 19 27.9 r G96
2012-04-23 03:51:02 C 09 26 35.41 +21 19 16.5 r G96
2012-04-23 03:52:49 C 09 26 38.11 +21 19 04.9 r G96
2012-04-23 03:54:36 C 09 26 40.81 +21 18 53.6 r G96
2012-04-23 05:30:57 C 09 29 05.98 +21 07 46.8 r H21
2012-04-23 05:36:17 C 09 29 14.17 +21 07 10.8 r H21
2012-04-23 05:40:50 C 09 29 21.20 +21 06 39.6 r H21
2012-04-23 21:33:51 C 09 53 57.93 +19 16 43.7 o J16
2012-04-23 21:34:55 C 09 53 59.45 +19 16 36.0 o J16
2012-04-23 21:36:01 C 09 54 01.14 +19 16 27.4 o J16
2012-04-24 05:34:12 C 10 05 52.68 +18 18 06.2 u H45
2012-04-24 05:35:09 C 10 05 54.12 +18 17 58.1 u H45
2012-04-24 05:36:33 C 10 05 56.10 +18 17 47.7 u H45
2012-04-24 05:37:34 C 10 05 57.63 +18 17 39.8 u H45
2012-04-24 05:38:31 C 10 05 59.02 +18 17 32.8 u H45
2012-04-24 05:40:02 C 10 06 01.20 +18 17 21.2 u H45
2012-04-24 05:41:18 C 10 06 03.06 +18 17 11.0 u H45
2012-04-24 05:42:21 C 10 06 04.62 +18 17 03.3 u H45
2012-04-24 05:43:43 C 10 06 06.50 +18 16 53.1 u H45
2012-04-24 05:44:54 C 10 06 08.28 +18 16 43.9 u H45
2012-04-25 04:39:13 C 10 38 42.25 +15 19 12.5 r 703
2012-04-25 04:47:26 C 10 38 52.94 +15 18 07.9 r 703
2012-04-25 04:55:37 C 10 39 03.67 +15 17 03.0 r 703
2012-04-25 05:02:59 C 10 39 10.69 +15 15 51.5 u H45
2012-04-25 05:03:44 C 10 39 14.25 +15 15 58.3 r 703
2012-04-25 05:03:51 C 10 39 11.87 +15 15 44.4 u H45
2012-04-25 05:04:45 C 10 39 13.01 +15 15 37.4 u H45
2012-04-25 05:05:58 C 10 39 14.64 +15 15 27.2 u H45
2012-04-25 05:06:57 C 10 39 15.93 +15 15 19.7 u H45
2012-04-25 05:08:04 C 10 39 17.39 +15 15 10.3 u H45
2012-04-25 05:09:02 C 10 39 18.69 +15 15 03.3 u H45
2012-04-25 05:10:26 C 10 39 20.46 +15 14 51.7 u H45
2012-04-25 05:11:34 C 10 39 21.93 +15 14 43.8 u H45
2012-04-25 05:12:28 C 10 39 23.15 +15 14 36.4 u H45
2012-04-25 05:13:21 C 10 39 24.34 +15 14 28.7 u H45
2012-04-25 05:14:36 C 10 39 25.93 +15 14 18.1 u H45
2012-04-25 05:15:34 C 10 39 27.17 +15 14 10.8 u H45
2012-04-25 05:16:28 C 10 39 28.40 +15 14 03.5 u H45
2012-04-25 05:17:18 C 10 39 29.45 +15 13 57.0 u H45
2012-04-26 18:19:23 C 11 24 44.13 +10 27 37.7 u 089
2012-04-26 18:22:13 C 11 24 47.16 +10 27 16.9 u 089
2012-04-26 18:25:04 C 11 24 50.14 +10 26 56.3 u 089
2012-04-26 18:30:46 C 11 24 56.20 +10 26 14.0 u 089
2012-04-26 18:33:37 C 11 24 59.21 +10 25 52.9 u 089
2012-04-26 19:23:07 C 11 25 51.43 +10 19 49.1 u 089
2012-04-26 19:25:58 C 11 25 54.38 +10 19 28.1 u 089
2012-04-27 19:42:08 C 11 50 14.24 +07 30 07.3 u C73
2012-04-27 19:42:48 C 11 50 14.82 +07 30 02.9 u C73
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)