422637 (1985 WA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6093455206 ± 9.18e-08
Semi-major axis (a)2.8264048782 AU ± 3.91e-08
Inclination (i)9.82718347° ± 1.03e-05
Long. of Asc. Node (Ω)43.37754775° ± 5.76e-05
Arg. of Perihelion (ω)351.51883847° ± 6.45e-05
Mean Anomaly (M)137.32725908° ± 3.07e-05
Mean Motion (n)0.2074248168°/day ± 4.31e-09
Perihelion dist (q)1.10414773 AU ± 2.60e-07
Aphelion dist (Q)4.54866203 AU ± 2.67e-07
Orbital Period4.75172787 yr ± 9.87e-08
Physical Parameters
H (abs. magnitude)18.14
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.403″
Uncertainty0
Orbit TypeAmor
MOID0.111861 AU
Observations Used74
Oppositions24
Arc Total1985-2015
First Observation Used1985-10-14
Last Observation Used2015-02-18
Observations (75)
Date Type RA Dec Mag Band Observatory
1985-10-14 11:41:26 A 00 22 43.48 -27 35 46.4 413
1985-10-14 12:41:25 A 00 22 46.03 -27 33 41.1 413
1985-11-16 05:30:59 A 01 36 58.73 +17 53 09.5 17.0 675
1985-11-16 06:17:15 A 01 37 03.90 +17 55 48.5 675
1985-11-18 06:39:44 A 01 43 07.33 +20 36 20.4 675
1985-11-18 07:18:29 A 01 43 11.73 +20 38 24.6 675
1985-11-18 07:24:29 A 01 43 12.46 +20 38 41.7 675
1985-11-19 07:22:29 A 01 46 14.53 +21 54 12.1 675
1985-11-19 07:36:45 A 01 46 16.22 +21 54 54.8 675
1985-11-19 09:11:59 A 01 46 27.44 +21 59 43.3 675
1985-11-19 09:18:14 A 01 46 28.29 +22 00 03.6 675
1985-12-05 03:49:45 A 02 35 12.23 +35 51 28.9 688
1985-12-05 03:58:59 A 02 35 13.21 +35 51 41.2 688
1985-12-05 06:03:55 A 02 35 27.83 +35 54 37.6 B 691
1985-12-05 06:22:39 A 02 35 30.09 +35 55 02.6 B 691
1985-12-05 06:45:04 A 02 35 32.62 +35 55 33.7 B 691
1985-12-07 04:46:24 A 02 41 21.78 +36 55 49.4 B 691
1985-12-07 04:59:32 A 02 41 23.29 +36 56 05.7 B 691
1985-12-13 05:49:30 A 02 59 14.75 +39 22 56.0 A 801
1985-12-14 06:28:15 A 03 02 14.23 +39 42 31.6 B 691
1985-12-14 06:37:16 A 03 02 15.25 +39 42 38.1 B 691
1985-12-14 06:58:46 A 03 02 17.69 +39 42 53.7 B 691
1985-12-18 06:35:09 A 03 13 42.16 +40 45 13.2 688
1985-12-18 06:54:59 A 03 13 44.37 +40 45 24.0 688
1985-12-18 07:08:30 A 03 13 45.92 +40 45 30.9 688
1985-12-31 05:32:00 A 03 48 50.00 +42 22 06.0 675
1985-12-31 05:39:41 A 03 48 50.76 +42 22 07.0 675
1986-01-02 06:00:00 A 03 54 02.29 +42 26 39.4 675
1986-01-02 06:09:00 A 03 54 03.18 +42 26 39.7 675
1986-01-18 06:45:45 A 04 33 25.03 +42 04 30.9 675
1986-01-18 07:14:59 A 04 33 27.85 +42 04 25.4 675
1986-01-19 06:00:31 A 04 35 42.65 +42 00 54.0 675
1986-01-19 06:10:05 A 04 35 43.56 +42 00 52.4 675
2004-11-15 12:41:25 C 20 52 07.43 -25 57 01.5 r 413
2004-11-15 12:57:25 C 20 52 09.48 -25 56 46.3 r 413
2004-11-16 09:51:57 C 20 54 51.343 -25 37 25.99 r 413
2004-11-16 10:08:15 C 20 54 53.407 -25 37 10.73 r 413
2005-01-29 02:21:44 C 01 22 58.12 +15 36 03.2 r 448
2005-01-29 02:37:20 C 01 23 00.74 +15 36 22.8 r 448
2005-01-29 02:58:25 C 01 23 04.21 +15 36 50.2 r 448
2009-10-23 09:58:59 C 08 05 13.79 +25 56 37.6 19.3 c 704
2009-10-23 10:18:24 C 08 05 16.37 +25 56 47.0 19.6 c 704
2009-10-23 10:37:46 C 08 05 18.83 +25 56 55.9 19.6 c 704
2009-10-23 10:57:17 C 08 05 21.33 +25 57 04.2 20.1 c 704
2009-10-23 11:16:40 C 08 05 23.83 +25 57 14.1 19.8 c 704
2009-10-29 10:02:15 C 08 23 15.57 +26 57 57.3 r 703
2009-10-29 10:14:12 C 08 23 17.05 +26 58 02.9 r 703
2009-10-29 10:26:05 C 08 23 18.34 +26 58 07.4 r 703
2009-10-29 10:37:56 C 08 23 19.71 +26 58 12.0 r 703
2009-11-18 11:24:19 C 09 08 07.69 +30 13 53.5 r 703