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
2013-08-03 00:00:26 C 23 52 33.52 +45 16 29.5 u A74
2013-08-03 00:31:11 C 23 52 38.75 +45 17 31.8 u A74
2013-08-03 01:01:56 C 23 52 43.97 +45 18 33.9 u A74
2013-08-03 01:27:34 C 23 52 48.31 +45 19 25.6 u A74
2013-08-08 23:47:36 C 00 19 17.62 +49 47 53.8 q C27
2013-08-08 23:54:16 C 00 19 18.92 +49 48 05.7 q C27
2013-08-09 01:10:14 C 00 19 33.57 +49 50 21.5 q C27
2013-08-09 01:12:19 C 00 19 33.95 +49 50 25.2 q C27
2013-08-09 21:43:39 C 00 23 40.96 +50 25 53.0 q C27
2013-08-09 21:46:24 C 00 23 41.49 +50 25 57.7 q C27
2013-08-09 22:56:04 C 00 23 55.44 +50 28 00.6 q C27
2013-08-09 22:58:24 C 00 23 55.90 +50 28 04.8 q C27
2013-08-15 19:55:55 C 00 54 05.56 +54 07 43.9 q K48
2013-08-15 20:04:00 C 00 54 07.48 +54 07 55.7 q K48
2013-08-15 20:12:06 C 00 54 09.16 +54 08 06.4 q K48
2013-08-16 16:02:47 C 00 58 39.77 +54 35 22.5 q N27
2013-08-16 16:09:28 C 00 58 41.32 +54 35 31.9 q N27
2013-08-16 16:16:12 C 00 58 42.82 +54 35 41.0 q N27
2013-08-16 16:25:06 C 00 58 44.87 +54 35 53.6 q N27
2013-08-16 16:31:47 C 00 58 46.41 +54 36 02.7 q N27
2013-08-16 16:34:00 C 00 58 46.92 +54 36 06.0 q N27
2013-08-26 08:31:09 C 01 55 26.36 +58 40 47.9 u H21
2013-08-26 08:36:51 C 01 55 27.77 +58 40 52.3 u H21
2013-08-26 08:42:34 C 01 55 29.18 +58 40 56.5 u H21
2013-08-26 08:48:33 C 01 55 30.65 +58 41 01.2 u H21
2013-08-26 08:57:02 C 01 55 32.74 +58 41 07.4 u H21
2013-09-04 03:26:50 C 02 49 17.87 +60 20 55.0 c A24
2013-09-04 03:27:52 C 02 49 18.12 +60 20 55.4 c A24
2013-09-05 02:48:21 C 02 55 06.71 +60 25 05.9 c A24
2013-09-05 02:49:24 C 02 55 06.89 +60 25 06.0 c A24
2013-09-05 03:49:08 C 02 55 21.18 +60 25 15.1 c A24
2013-09-05 03:50:11 C 02 55 21.39 +60 25 15.2 c A24
2013-09-06 20:55:57 C 03 05 26.26 +60 29 08.6 q A27
2013-09-06 21:12:56 C 03 05 30.33 +60 29 10.0 q A27
2013-09-18 01:38:53 C 04 03 24.32 +59 29 51.3 c A24
2013-09-18 01:39:57 C 04 03 24.49 +59 29 50.8 c A24
2013-09-18 02:42:14 C 04 03 35.58 +59 29 23.3 c A24
2013-09-18 02:43:16 C 04 03 35.72 +59 29 22.9 c A24
2013-09-21 23:27:38 C 04 19 40.96 +58 40 06.3 c J19
2013-09-21 23:38:02 C 04 19 42.75 +58 40 01.1 c J19
2013-09-21 23:47:48 C 04 19 44.28 +58 39 56.0 c J19
2013-09-21 23:57:34 C 04 19 45.77 +58 39 49.6 c J19
2013-09-22 00:07:18 C 04 19 47.36 +58 39 45.1 c J19
2013-09-23 01:56:58 C 04 23 50.58 +58 24 03.2 c A24
2013-09-23 01:58:00 C 04 23 50.73 +58 24 02.7 c A24
2013-09-23 02:56:36 C 04 23 59.34 +58 23 26.7 c A24
2013-09-23 02:57:39 C 04 23 59.47 +58 23 26.2 c A24
2013-09-24 01:12:33 C 04 27 21.90 +58 09 07.8 c A24
2013-09-24 01:13:35 C 04 27 22.07 +58 09 07.0 c A24
2013-09-24 02:11:34 C 04 27 30.25 +58 08 30.5 c A24