9950 ESA (1990 VB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5329201423 ± 1.43e-08
Semi-major axis (a)2.4385971114 AU ± 3.33e-09
Inclination (i)14.59305729° ± 2.81e-06
Long. of Asc. Node (Ω)253.43982833° ± 6.02e-06
Arg. of Perihelion (ω)103.60390955° ± 7.14e-06
Mean Anomaly (M)74.57697994° ± 2.88e-06
Mean Motion (n)0.2588225988°/day ± 5.31e-10
Perihelion dist (q)1.13901959 AU ± 3.49e-08
Aphelion dist (Q)3.73817463 AU ± 3.53e-08
Orbital Period3.80811524 yr ± 7.81e-09
Physical Parameters
H (abs. magnitude)16.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.272″
Uncertainty0
Orbit TypeAmor
MOID0.279349 AU
Observations Used791
Oppositions27
Arc Total1990-2026
First Observation Used1990-11-08
Last Observation Used2026-04-05
Observations (857)
Date Type RA Dec Mag Band Observatory
2013-12-31 21:22:54 C 04 15 52.89 +15 34 07.1 q 434
2013-12-31 21:24:59 C 04 15 52.89 +15 34 06.7 q 434
2013-12-31 21:27:02 C 04 15 52.87 +15 34 05.8 q 434
2013-12-31 21:29:07 C 04 15 52.90 +15 34 04.5 q 434
2014-01-04 03:43:40 C 04 16 33.38 +15 04 34.9 R G45
2014-01-04 04:19:46 C 04 16 33.69 +15 04 22.3 R G45
2014-01-04 04:55:05 C 04 16 33.96 +15 04 10.0 R G45
2014-01-04 05:13:31 C 04 16 34.13 +15 04 03.2 R G45
2014-01-04 05:30:16 C 04 16 34.33 +15 03 57.8 R G45
2014-01-04 05:42:07 C 04 16 34.45 +15 03 53.5 q 703
2014-01-04 05:53:13 C 04 16 34.52 +15 03 49.7 q 703
2014-01-04 06:04:20 C 04 16 34.63 +15 03 46.1 q 703
2014-01-04 06:21:35 C 04 16 34.78 +15 03 39.9 q 703
2014-01-14 04:36:08 C 04 20 45.65 +14 01 05.3 u H21
2014-01-14 04:40:14 C 04 20 45.75 +14 01 04.2 u H21
2014-01-14 04:44:18 C 04 20 45.83 +14 01 03.6 u H21
2014-01-14 04:48:22 C 04 20 45.94 +14 01 02.6 u H21
2014-01-14 04:52:03 C 04 20 46.03 +14 01 01.6 u H21
2014-01-14 04:55:22 C 04 20 46.09 +14 01 00.9 u H21
2014-01-14 07:55:31 C 04 20 50.21 +14 00 27.8 q 703
2014-01-14 08:02:48 C 04 20 50.41 +14 00 26.5 q 703
2014-01-14 08:10:05 C 04 20 50.57 +14 00 26.5 q 703
2014-01-14 08:17:22 C 04 20 50.74 +14 00 24.2 q 703
2014-01-16 02:03:39 C 04 21 53.05 +13 53 00.6 u H21
2014-01-16 02:09:22 C 04 21 53.19 +13 52 59.3 u H21
2014-01-16 02:15:06 C 04 21 53.32 +13 52 58.7 u H21
2014-01-16 02:21:37 C 04 21 53.47 +13 52 57.3 u H21
2014-01-17 05:22:55 C 04 22 36.192 +13 48 42.15 L F51
2014-01-17 05:39:04 C 04 22 36.592 +13 48 39.75 L F51
2014-01-20 12:36:15 C 04 24 51.35 +13 38 01.7 q D29
2014-01-20 13:10:37 C 04 24 52.31 +13 37 57.5 q D29
2014-01-20 13:44:58 C 04 24 53.25 +13 37 53.3 q D29
2014-02-20 06:43:56 C 04 55 54.556 +13 26 38.28 L F51
2014-02-20 07:01:14 C 04 55 55.418 +13 26 38.99 L F51
2014-02-20 07:17:43 C 04 55 56.245 +13 26 39.65 L F51
2014-02-20 07:34:14 C 04 55 57.075 +13 26 40.34 L F51
2014-02-27 06:40:43 C 05 04 48.104 +13 34 31.26 L F51
2014-02-27 06:51:26 C 05 04 48.674 +13 34 31.82 L F51
2014-03-19 06:10:54 C 05 32 29.899 +13 57 25.77 L F51
2014-03-19 06:21:41 C 05 32 30.546 +13 57 26.04 L F51
2015-01-18 12:46:41 C 10 59 18.528 -12 58 24.68 L F51
2015-01-18 13:04:22 C 10 59 18.172 -12 58 26.00 L F51
2015-01-18 13:22:03 C 10 59 17.799 -12 58 27.64 L F51
2015-01-18 13:39:46 C 10 59 17.451 -12 58 28.96 L F51
2015-01-20 11:54:46 C 10 58 20.562 -13 02 11.01 L F51
2015-01-20 12:13:40 C 10 58 20.144 -13 02 12.53 L F51
2015-01-20 12:51:32 C 10 58 19.316 -13 02 15.31 L F51
2015-01-22 12:30:35 C 10 57 16.035 -13 05 23.04 L F51
2015-01-22 12:48:42 C 10 57 15.616 -13 05 24.37 L F51
2015-01-22 13:06:48 C 10 57 15.190 -13 05 25.33 L F51