8176 (1991 WA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6431832717 ± 1.14e-08
Semi-major axis (a)1.5750859884 AU ± 1.02e-09
Inclination (i)39.58756964° ± 2.00e-06
Long. of Asc. Node (Ω)66.50109733° ± 2.91e-06
Arg. of Perihelion (ω)241.89066449° ± 2.56e-06
Mean Anomaly (M)100.30033711° ± 3.66e-06
Mean Motion (n)0.4986041328°/day ± 4.85e-10
Perihelion dist (q)0.56201703 AU ± 1.79e-08
Aphelion dist (Q)2.58815495 AU ± 1.80e-08
Orbital Period1.97677119 yr ± 1.92e-09
Physical Parameters
H (abs. magnitude)16.99
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.077″
Uncertainty0
Orbit TypeApollo
MOID0.192310 AU
Observations Used849
Gaia Obs Used50
Oppositions13
Arc Total1991-2026
First Observation Used1991-12-01
Last Observation Used2026-01-26
Observations (880)
Date Type RA Dec Mag Band Observatory
2011-04-10 02:29:36 C 15 47 52.28 +66 13 07.0 c A24
2011-04-10 02:46:45 C 15 47 50.43 +66 13 28.9 c A24
2011-04-11 01:31:11 C 15 45 30.59 +66 42 45.1 c A24
2011-04-11 01:32:13 C 15 45 30.51 +66 42 46.1 c A24
2011-04-11 01:33:16 C 15 45 30.42 +66 42 47.7 c A24
2011-04-17 23:33:57 C 15 20 24.97 +70 13 28.4 u 160
2011-04-17 23:36:56 C 15 20 24.32 +70 13 31.4 u 160
2011-04-17 23:39:52 C 15 20 23.73 +70 13 34.8 u 160
2011-05-01 22:39:41 C 13 15 11.75 +75 25 21.5 c A24
2011-05-01 22:40:44 C 13 15 11.38 +75 25 22.3 c A24
2011-05-01 23:02:57 C 13 14 58.23 +75 25 30.2 c A24
2011-05-01 23:26:13 C 13 14 44.57 +75 25 37.7 c A24
2011-05-01 23:48:26 C 13 14 31.14 +75 25 45.5 c A24
2011-05-01 23:49:29 C 13 14 30.89 +75 25 45.1 c A24
2011-05-07 20:35:54 C 11 45 34.66 +75 05 36.5 c A24
2011-05-07 20:36:56 C 11 45 34.39 +75 05 37.4 c A24
2011-05-08 20:53:41 C 11 29 42.22 +74 46 26.9 c A24
2011-05-08 20:54:43 C 11 29 41.52 +74 46 26.0 c A24
2011-05-11 19:02:10 C 10 45 35.28 +73 22 12.0 r 168
2011-05-11 20:07:10 C 10 44 55.95 +73 20 30.4 r 168
2011-05-11 21:01:45 C 10 44 23.14 +73 19 05.0 r 168
2011-05-11 21:04:45 C 10 44 21.28 +73 18 59.9 r 168
2011-05-15 04:38:15 C 09 59 47.29 +70 49 30.4 18.2 c 704
2011-05-15 04:52:05 C 09 59 39.93 +70 48 58.2 18.7 c 704
2011-05-15 05:06:00 C 09 59 32.74 +70 48 26.9 18.7 c 704
2011-05-15 05:19:47 C 09 59 25.46 +70 47 53.9 18.5 c 704
2011-05-15 05:33:43 C 09 59 18.18 +70 47 22.7 18.2 c 704
2011-05-17 19:47:33 C 09 29 14.01 +68 10 38.8 a 233
2011-05-17 19:51:56 C 09 29 11.86 +68 10 26.6 a 233
2011-05-17 19:55:36 C 09 29 10.23 +68 10 16.1 a 233
2011-05-17 19:59:53 C 09 29 08.16 +68 10 04.0 a 233
2011-05-17 20:03:39 C 09 29 06.38 +68 09 52.0 a 233
2011-05-25 23:07:42 C 08 17 32.89 +56 12 00.4 u C01
2011-05-25 23:09:06 C 08 17 32.51 +56 11 54.0 u C01
2011-09-27 10:21:05 C 07 37 36.16 +23 18 15.7 u H15
2011-09-27 10:41:25 C 07 37 37.10 +23 18 30.7 u H15
2011-09-27 11:02:08 C 07 37 38.22 +23 18 47.8 u H15
2011-09-27 11:22:24 C 07 37 39.23 +23 19 04.1 u H15
2011-09-30 14:07:06 C 07 41 21.525 +24 17 16.76 L F51
2011-09-30 14:14:46 C 07 41 21.880 +24 17 22.62 L F51
2011-09-30 14:22:24 C 07 41 22.244 +24 17 28.73 L F51
2011-09-30 14:30:00 C 07 41 22.590 +24 17 35.49 L F51
2013-02-25 10:41:00 C 16 00 13.76 +43 11 00.4 u H21
2013-02-25 10:48:31 C 16 00 14.28 +43 11 07.2 u H21
2013-02-25 10:56:02 C 16 00 14.74 +43 11 14.4 u H21
2013-02-28 12:33:45 C 16 05 14.60 +44 09 31.1 q 448
2013-02-28 12:42:31 C 16 05 15.19 +44 09 38.0 q 448
2013-03-12 12:09:44 C 16 23 29.10 +48 26 48.5 q 448
2013-03-12 12:15:28 C 16 23 29.35 +48 26 53.9 q 448
2013-03-12 12:23:38 C 16 23 29.80 +48 27 02.7 q 448