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
2018-02-03 15:39:10 C 06 55 14.19 +06 40 13.4 q D29
2019-01-12 12:52:40 C 11 31 24.897 -15 16 36.55 U F51
2019-01-12 13:11:54 C 11 31 24.700 -15 16 39.32 U F51
2019-01-12 13:31:08 C 11 31 24.549 -15 16 42.46 U F51
2019-01-12 13:50:24 C 11 31 24.371 -15 16 45.26 U F51
2019-05-02 06:27:07 C 10 25 59.686 -08 33 19.36 U F51
2019-05-02 06:43:32 C 10 25 59.620 -08 33 15.63 U F51
2019-05-02 06:59:55 C 10 25 59.555 -08 33 11.81 U F51
2020-04-24 07:19:31 C 13 44 27.21 -25 47 52.3 V G96
2020-04-24 07:34:33 C 13 44 26.31 -25 47 48.0 V G96
2020-04-24 07:42:04 C 13 44 25.95 -25 47 45.9 V G96
2020-04-30 05:46:58 C 13 38 09.44 -24 59 46.6 V G96
2020-04-30 06:14:36 C 13 38 08.24 -24 59 37.8 V G96
2020-04-30 06:22:52 C 13 38 07.86 -24 59 34.6 V G96
2020-05-11 07:54:31 C 13 27 15.828 -23 19 28.21 U F52
2020-05-11 08:10:33 C 13 27 15.203 -23 19 21.89 U F52
2020-05-11 08:26:36 C 13 27 14.589 -23 19 15.54 U F52
2020-05-11 08:42:37 C 13 27 13.962 -23 19 09.15 U F52
2020-05-13 05:15:50 C 13 25 35.11 -23 01 36.4 V G96
2020-05-13 05:23:28 C 13 25 34.81 -23 01 33.8 V G96
2020-05-13 05:31:06 C 13 25 34.53 -23 01 30.7 V G96
2020-05-13 05:38:45 C 13 25 34.28 -23 01 27.6 V G96
2020-05-19 06:40:06 C 13 20 40.201 -22 04 01.06 U F51
2020-05-19 06:55:48 C 13 20 39.697 -22 03 54.75 U F51
2020-05-19 07:12:13 C 13 20 39.156 -22 03 48.24 U F51
2020-05-19 07:27:58 C 13 20 38.651 -22 03 42.02 U F51
2020-05-25 07:30:54 C 13 16 34.263 -21 07 32.35 U F52
2020-05-25 07:48:02 C 13 16 33.805 -21 07 25.72 U F52
2020-05-25 08:05:11 C 13 16 33.349 -21 07 19.27 U F52
2020-05-25 08:22:17 C 13 16 32.888 -21 07 12.64 U F52
2020-05-27 05:34:11 C 13 15 27.04 -20 50 02.8 V G96
2020-05-27 05:41:09 C 13 15 26.79 -20 49 59.9 V G96
2020-05-27 05:48:06 C 13 15 26.65 -20 49 56.6 V G96
2020-05-27 05:55:02 C 13 15 26.52 -20 49 54.7 V G96
2020-06-16 06:27:03 C 13 09 25.168 -18 11 44.71 U F52
2020-06-16 06:43:03 C 13 09 25.133 -18 11 40.41 U F52
2020-06-16 06:59:04 C 13 09 25.073 -18 11 36.07 U F52
2020-06-16 07:15:03 C 13 09 25.021 -18 11 31.44 U F52
2021-09-13 12:02:17 C 08 06 07.84 +15 30 30.7 U I41
2021-09-13 12:05:47 C 08 06 08.09 +15 30 29.0 U I41
2021-09-13 12:12:44 C 08 06 08.60 +15 30 26.1 U I41
2021-09-13 12:16:13 C 08 06 08.85 +15 30 24.5 U I41
2021-09-14 12:02:39 C 08 07 50.63 +15 19 53.7 U I41
2021-09-14 12:16:37 C 08 07 51.59 +15 19 47.3 U I41
2021-09-15 12:04:54 C 08 09 32.36 +15 09 13.9 U I41
2021-09-15 12:08:23 C 08 09 32.62 +15 09 12.4 U I41
2021-09-15 12:11:52 C 08 09 32.84 +15 09 10.8 U I41
2021-09-15 12:15:22 C 08 09 33.09 +15 09 09.4 U I41
2021-11-09 11:41:59 C 09 12 28.93 +05 22 57.1 V G96
2021-11-09 11:50:12 C 09 12 29.10 +05 22 53.8 V G96