412976 (1987 WC)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2336615193 ± 2.00e+00
Semi-major axis (a)1.3620233617 AU ± 3.00e+00
Inclination (i)15.84502330° ± 4.00e+00
Long. of Asc. Node (Ω)51.80641043° ± 5.00e+00
Arg. of Perihelion (ω)308.37961376° ± 6.00e+00
Mean Anomaly (M)5.03230320° ± 1.26e-05
Mean Motion (n)0.6200624629°/day ± 2.05e+00
Perihelion dist (q)1.04377091 AU ± 3.56e+00
Aphelion dist (Q)1.68027581 AU ± 4.60e+00
Orbital Period1.58955967 yr ± 5.25e+00
NGA Modelr2
A27.85276901e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.318″
Uncertainty0
Orbit TypeAmor
MOID0.114184 AU
Observations Used304
Oppositions14
Arc Total1987-2026
First Observation Used1987-11-21
Last Observation Used2026-01-07
Observations (326)
Date Type RA Dec Mag Band Observatory
1987-11-21 07:41:00 A 04 33 10.60 +38 11 03.4 19.0 675
1987-11-21 08:12:29 A 04 33 05.77 +38 12 30.5 675
1987-11-23 08:37:00 A 04 25 45.3 +40 24 44 675
1987-11-23 08:51:59 A 04 25 42.7 +40 25 27 675
1987-11-27 08:05:00 A 04 11 34.6 +44 02 12 675
1987-11-30 09:31:59 A 04 01 12.4 +46 14 10 675
1987-11-30 10:02:00 A 04 01 08.6 +46 14 47 675
1987-12-15 05:23:59 A 03 25 44.4 +51 38 59 675
1987-12-15 06:08:59 A 03 25 41.6 +51 39 14 675
1987-12-21 07:39:42 A 03 19 31.89 +52 20 09.9 B 691
1987-12-21 07:56:20 A 03 19 31.35 +52 20 11.8 B 691
1987-12-21 08:05:06 A 03 19 31.08 +52 20 12.6 B 691
1988-01-09 07:36:12 A 03 27 02.41 +52 20 03.5 675
1988-01-09 07:43:35 A 03 27 02.76 +52 20 02.4 675
1988-01-09 07:50:42 A 03 27 03.03 +52 20 00.4 675
1988-01-09 07:58:36 A 03 27 03.46 +52 20 00.0 675
1988-01-13 08:19:46 A 03 32 28.19 +52 08 12.8 675
1988-01-13 09:03:29 A 03 32 30.79 +52 08 03.9 675
1988-01-13 09:14:17 A 03 32 31.41 +52 08 01.6 675
1988-01-13 09:20:38 A 03 32 31.87 +52 08 00.7 675
1995-07-20 18:43:36 C 02 55 44.08 -22 46 14.1 413
1995-07-20 18:48:13 C 02 55 44.93 -22 46 10.5 413
1995-07-20 18:55:16 C 02 55 46.03 -22 46 04.3 413
1995-07-20 18:59:34 C 02 55 46.74 -22 46 01.1 413
1995-08-06 19:38:07 C 03 59 58.18 -15 47 15.0 413
1995-08-06 19:42:45 C 03 59 58.86 -15 47 09.5 413
1995-08-06 19:46:58 C 03 59 59.53 -15 47 05.0 413
2004-01-11 07:58:40 C 10 34 02.67 +51 07 39.1 c 673
2004-01-11 08:06:39 C 10 34 02.25 +51 07 46.8 c 673
2004-01-11 08:17:39 C 10 34 01.65 +51 07 57.3 c 673
2004-01-11 08:30:00 C 10 34 01.02 +51 08 05.3 c 673
2004-01-12 08:03:59 C 10 32 43.44 +51 30 40.8 c 673
2004-01-12 08:21:00 C 10 32 42.39 +51 30 57.1 c 673
2004-01-12 08:35:59 C 10 32 41.47 +51 31 11.4 c 673
2004-01-12 08:55:00 C 10 32 40.28 +51 31 29.9 c 673
2009-05-01 12:22:27 C 12 28 49.715 +14 50 31.26 t 568
2009-05-01 12:25:18 C 12 28 49.528 +14 50 29.53 t 568
2009-05-14 09:52:08 C 12 15 07.965 +11 40 23.53 t 568
2009-05-14 10:47:51 C 12 15 06.225 +11 39 45.47 t 568
2009-05-14 11:14:20 C 12 15 05.400 +11 39 27.38 t 568
2014-05-21 12:55:48 C 19 07 34.551 -40 11 04.96 L F51
2014-05-21 13:10:13 C 19 07 35.268 -40 11 28.61 L F51
2014-05-21 13:24:41 C 19 07 35.985 -40 11 52.32 L F51
2014-05-21 13:39:03 C 19 07 36.729 -40 12 15.65 L F51
2014-10-13 08:05:36 C 03 09 23.28 -65 14 48.0 u 807
2014-10-13 08:10:55 C 03 09 21.98 -65 14 34.4 u 807
2014-10-13 08:16:22 C 03 09 20.64 -65 14 20.4 u 807
2014-10-14 07:37:05 C 03 04 23.52 -64 14 54.9 u 807
2014-10-14 07:42:25 C 03 04 22.26 -64 14 40.6 u 807
2014-10-14 07:47:54 C 03 04 20.97 -64 14 25.9 u 807