2021 UR9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1087239308 ± 1.18e-04
Semi-major axis (a)1.3425325798 AU ± 3.36e-04
Inclination (i)20.67091626° ± 1.27e-02
Long. of Asc. Node (Ω)217.60591208° ± 1.06e-03
Arg. of Perihelion (ω)217.98121725° ± 2.60e-02
Mean Anomaly (M)189.54423645° ± 3.24e-01
Mean Motion (n)0.6336143807°/day ± 2.38e-04
Perihelion dist (q)1.19656716 AU ± 3.39e-04
Aphelion dist (Q)1.48849800 AU ± 4.05e-04
Orbital Period1.55556173 yr ± 5.84e-04
Physical Parameters
H (abs. magnitude)23.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.159″
Uncertainty3
Orbit TypeAmor
MOID0.225250 AU
Observations Used17
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-27
Last Observation Used2021-11-11
Observations (19)
Date Type RA Dec Mag Band Observatory
2021-10-27 08:12:04 C 02 58 26.87 +19 16 03.0 V G96
2021-10-27 08:30:44 C 02 58 26.57 +19 14 54.7 V G96
2021-10-27 08:41:13 C 02 58 26.45 +19 14 16.5 V G96
2021-10-31 08:07:31 C 02 57 40.641 +13 18 28.03 U F51
2021-10-31 08:23:19 C 02 57 40.345 +13 17 28.01 U F51
2021-10-31 08:39:09 C 02 57 40.030 +13 16 27.79 U F51
2021-10-31 12:07:42 C 02 57 35.672 +13 03 09.20 V F51
2021-10-31 12:08:37 C 02 57 35.651 +13 03 05.62 V F51
2021-11-01 06:03:49 C 02 57 24.76 +11 53 59.3 u H21
2021-11-01 06:15:27 C 02 57 24.52 +11 53 14.4 u H21
2021-11-03 10:55:28 C 02 56 44.71 +08 29 10.8 o 691
2021-11-03 11:09:52 C 02 56 44.46 +08 28 15.9 o 691
2021-11-03 11:24:16 C 02 56 44.20 +08 27 18.4 o 691
2021-11-07 09:25:30 C 02 55 30.868 +02 25 14.08 U F52
2021-11-07 09:42:07 C 02 55 30.469 +02 24 11.36 U F52
2021-11-07 09:58:44 C 02 55 30.082 +02 23 07.98 U F52
2021-11-11 08:40:41 C 02 54 14.804 -03 24 33.72 U F51
2021-11-11 08:58:58 C 02 54 14.391 -03 25 38.28 U F51
2021-11-11 09:35:39 C 02 54 13.555 -03 27 47.83 U F51