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
1999-11-18 09:32:18 C 06 33 17.93 +28 30 36.8 m 732
1999-11-18 09:39:16 C 06 33 16.38 +28 30 54.6 m 732
1999-11-20 10:00:32 C 06 23 05.27 +30 27 39.1 17.7 m 732
1999-11-20 10:04:30 C 06 23 04.49 +30 27 48.1 17.7 m 732
1999-11-20 10:08:29 C 06 23 03.54 +30 27 57.8 16.9 m 732
1999-11-27 06:14:04 C 05 45 57.28 +36 10 57.8 i 739
1999-11-27 06:18:45 C 05 45 56.16 +36 11 06.8 i 739
1999-11-27 06:23:51 C 05 45 54.94 +36 11 16.1 i 739
1999-11-30 22:25:05 C 05 25 21.34 +38 33 45.1 610
1999-11-30 22:33:04 C 05 25 19.41 +38 33 56.9 610
1999-11-30 22:41:05 C 05 25 17.47 +38 34 08.7 610
1999-11-30 22:49:04 C 05 25 15.53 +38 34 20.6 610
1999-11-30 22:57:05 C 05 25 13.59 +38 34 32.4 610
1999-12-13 04:59:51 C 04 23 21.24 +43 00 38.3 18.0 a 704
1999-12-13 05:21:06 C 04 23 17.34 +43 00 48.1 17.9 a 704
1999-12-13 05:42:17 C 04 23 13.46 +43 00 58.1 18.5 a 704
1999-12-13 06:03:23 C 04 23 09.61 +43 01 07.9 18.5 a 704
1999-12-13 06:24:39 C 04 23 05.76 +43 01 17.9 18.7 a 704
1999-12-30 03:32:32 C 03 32 49.39 +43 56 07.7 18.7 a 704
1999-12-30 03:54:06 C 03 32 47.75 +43 56 05.5 19.6 a 704
1999-12-30 04:36:42 C 03 32 44.26 +43 56 03.8 19.5 a 704
1999-12-31 03:20:08 C 03 31 06.26 +43 54 58.9 19.0 a 704
1999-12-31 03:41:32 C 03 31 04.78 +43 54 57.4 19.1 a 704
1999-12-31 04:03:38 C 03 31 03.08 +43 54 56.7 18.6 a 704
2001-10-22 11:37:15 C 07 50 34.10 +12 06 48.7 18.8 c 644
2001-10-22 11:55:07 C 07 50 33.23 +12 07 21.0 18.3 c 644
2001-10-22 12:13:03 C 07 50 32.39 +12 07 53.8 18.3 c 644
2001-10-24 09:59:23 C 07 48 22.93 +13 32 06.4 17.8 c 704
2001-10-24 10:22:48 C 07 48 21.71 +13 32 50.6 18.0 c 704
2001-10-24 10:46:01 C 07 48 20.47 +13 33 34.0 18.1 c 704
2001-10-24 11:08:56 C 07 48 19.25 +13 34 17.3 18.3 c 704
2001-10-24 11:32:07 C 07 48 18.04 +13 35 00.3 18.2 c 704
2001-11-10 11:57:52 C 07 14 52.78 +27 29 39.2 17.4 c 644
2001-11-10 12:13:01 C 07 14 50.88 +27 30 12.1 17.4 c 644
2001-11-10 12:28:12 C 07 14 48.97 +27 30 44.6 17.2 c 644
2001-11-11 10:17:11 C 07 12 08.30 +28 17 48.8 17.2 c 704
2001-11-11 10:38:02 C 07 12 05.58 +28 18 34.3 18.0 c 704
2001-11-11 10:58:54 C 07 12 02.88 +28 19 19.1 18.2 c 704
2001-11-11 11:19:58 C 07 12 00.16 +28 20 04.2 18.2 c 704
2001-11-11 11:40:48 C 07 11 57.44 +28 20 49.1 18.2 c 704
2001-12-23 05:20:42 C 04 12 40.68 +47 47 59.2 18.9 c 704
2001-12-23 05:42:34 C 04 12 37.76 +47 48 00.3 19.8 c 704
2001-12-23 06:05:01 C 04 12 34.68 +47 47 59.6 19.2 c 704
2001-12-23 06:27:10 C 04 12 31.74 +47 48 00.0 19.1 c 704
2001-12-23 06:50:03 C 04 12 28.65 +47 48 00.2 18.7 c 704
2003-03-20 10:22:20 C 14 06 03.61 +66 36 18.9 c 673
2003-03-20 10:32:39 C 14 06 02.42 +66 36 26.6 c 673
2003-03-20 10:42:40 C 14 06 01.25 +66 36 34.0 c 673
2003-03-20 10:54:00 C 14 05 59.97 +66 36 43.1 c 673
2003-10-22 10:40:24 C 07 48 25.00 +18 26 29.0 18.2 c 704