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
1994-10-04 12:13:37 C 06 48 05.53 +31 32 06.7 z 658
1994-10-06 12:22:57 C 06 51 27.07 +31 03 40.8 z 658
1994-10-06 12:26:35 C 06 51 27.31 +31 03 38.5 z 658
1994-10-06 12:30:55 C 06 51 27.59 +31 03 36.1 z 658
1994-10-29 11:28:07 C 07 13 33.18 +25 26 55.3 658
1994-10-29 11:31:05 C 07 13 33.19 +25 26 53.4 658
1994-10-29 11:34:36 C 07 13 33.22 +25 26 51.2 658
1994-11-11 17:33:43 C 07 12 08.94 +22 13 10.0 413
1994-11-11 17:36:31 C 07 12 08.87 +22 13 08.3 413
1994-11-12 07:15:52 C 07 11 51.73 +22 04 43.5 z 292
1994-12-05 17:34:29 C 06 45 48.41 +16 47 08.6 z 360
1994-12-05 17:38:30 C 06 45 48.15 +16 47 06.4 z 360
1994-12-05 18:16:14 C 06 45 45.58 +16 46 47.1 z 360
1994-12-06 23:35:45 C 06 43 51.06 +16 31 56.4 z 587
1994-12-06 23:44:05 C 06 43 50.43 +16 31 50.7 z 587
1994-12-20 14:24:46 C 06 21 42.62 +14 06 28.5 413
1994-12-20 14:28:26 C 06 21 42.40 +14 06 26.3 413
1994-12-22 14:13:07 C 06 18 33.97 +13 48 40.8 413
1994-12-22 14:15:26 C 06 18 33.81 +13 48 40.0 413
1994-12-27 14:21:45 C 06 11 02.34 +13 08 20.8 z 360
1994-12-27 14:26:30 C 06 11 02.05 +13 08 19.5 z 360
1995-01-03 08:33:24 C 06 02 01.46 +12 24 35.2 657
1995-01-03 08:41:16 C 06 02 00.95 +12 24 33.7 657
1995-01-03 08:46:48 C 06 02 00.77 +12 24 34.4 657
1995-01-12 15:02:38 C 05 52 27.53 +11 43 43.8 413
1995-01-12 15:08:36 C 05 52 27.30 +11 43 43.0 413
1995-01-13 13:24:29 C 05 51 41.71 +11 40 43.6 413
1995-01-22 06:18:04 C 05 46 17.29 +11 21 11.7 z 658
1995-01-22 06:28:39 C 05 46 17.12 +11 21 11.5 z 658
1998-09-24 02:59:29 C 07 49 00.58 +18 55 49.8 557
1998-09-24 03:02:30 C 07 49 00.77 +18 55 48.7 557
1998-09-24 03:30:10 C 07 49 02.77 +18 55 36.1 557
1999-01-15 14:22:32 C 07 54 39.21 +03 44 57.7 b 426
1999-01-15 14:34:09 C 07 54 38.60 +03 44 58.3 b 426
1999-01-15 14:56:11 C 07 54 37.39 +03 44 59.3 b 426
1999-01-17 14:35:46 C 07 52 01.30 +03 46 50.4 b 426
1999-01-19 13:03:06 C 07 49 31.46 +03 49 19.3 b 426
1999-01-19 13:50:37 C 07 49 28.90 +03 49 21.6 b 426
1999-01-25 06:36:35 C 07 42 26.28 +04 00 04.9 z 711
1999-01-25 06:55:39 C 07 42 25.35 +04 00 09.8 z 711
1999-02-19 05:43:26 C 07 20 54.37 +05 26 09.4 z 711
1999-02-19 06:02:17 C 07 20 53.98 +05 26 11.9 z 711
1999-02-22 05:33:38 C 07 19 34.26 +05 38 14.2 z 711
1999-02-22 05:52:39 C 07 19 33.95 +05 38 17.1 z 711
2003-01-15 08:32:59 C 09 03 14.03 -02 01 02.1 c 711
2003-01-15 08:50:48 C 09 03 13.23 -02 01 02.2 c 711
2003-01-15 09:08:38 C 09 03 12.31 -02 01 02.6 c 711
2005-05-19 05:05:52 C 14 56 00.65 -26 02 50.9 19.3 o 644
2005-05-19 05:22:48 C 14 55 59.75 -26 02 43.7 19.5 o 644
2005-05-19 05:45:45 C 14 55 58.52 -26 02 34.3 19.4 o 644