2021 TW9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1029491000
Semi-major axis (a)1.2270454000 AU
Inclination (i)26.31976000°
Long. of Asc. Node (Ω)19.10255000°
Arg. of Perihelion (ω)346.52207000°
Mean Anomaly (M)20.01628000°
Mean Motion (n)0.7251254400°/day
Perihelion dist (q)1.10072220 AU
Aphelion dist (Q)1.35336860 AU
Orbital Period1.35922370 yr
Physical Parameters
H (abs. magnitude)24.54
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.480″
Uncertainty9
Orbit TypeAmor
MOID0.103647 AU
Observations Used21
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-17
Observations (21)
Date Type RA Dec Mag Band Observatory
2021-10-09 08:51:00 C 02 15 31.99 +06 08 40.8 V G96
2021-10-09 08:59:06 C 02 15 28.82 +06 09 49.9 V G96
2021-10-09 09:07:12 C 02 15 25.67 +06 10 59.6 V G96
2021-10-09 10:59:55 C 02 14 41.95 +06 26 56.1 V G96
2021-10-09 22:07:50 C 02 10 36.92 +08 01 48.8 V L01
2021-10-09 22:10:49 C 02 10 35.80 +08 02 15.0 V L01
2021-10-09 22:13:49 C 02 10 34.54 +08 02 39.0 V L01
2021-10-10 01:55:03 C 02 09 08.10 +08 34 20.4 V I93
2021-10-10 01:59:17 C 02 09 06.46 +08 34 57.3 V I93
2021-10-10 02:03:49 C 02 09 04.67 +08 35 36.1 V I93
2021-10-10 23:28:20 C 02 00 51.24 +11 39 56.2 V J95
2021-10-10 23:50:08 C 02 00 42.37 +11 43 04.8 V J95
2021-10-11 00:11:55 C 02 00 33.47 +11 46 13.0 V J95
2021-10-11 01:08:45 C 02 00 09.63 +11 54 29.4 V 204
2021-10-11 01:24:27 C 02 00 03.20 +11 56 44.3 V 204
2021-10-11 05:39:03 C 01 58 25.05 +12 33 28.2 u H21
2021-10-11 05:43:04 C 01 58 23.38 +12 34 02.8 u H21
2021-10-11 05:47:06 C 01 58 21.72 +12 34 37.6 u H21
2021-10-17 05:54:06 C 00 57 36.54 +31 23 47.2 V G96
2021-10-17 06:02:19 C 00 57 32.89 +31 24 40.0 V G96
2021-10-17 06:21:38 C 00 57 23.96 +31 26 47.0 V G96