2021 TN9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3670810000 ± 2.00e+00
Semi-major axis (a)1.5405013000 AU ± 3.00e+00
Inclination (i)10.38239000° ± 4.00e+00
Long. of Asc. Node (Ω)17.54289000° ± 5.00e+00
Arg. of Perihelion (ω)35.46043000° ± 6.00e+00
Mean Anomaly (M)38.76843000° ± 2.27e+02
Mean Motion (n)0.5154789915°/day ± 1.51e+00
Perihelion dist (q)0.97501250 AU ± 3.62e+00
Aphelion dist (Q)2.10599010 AU ± 5.13e+00
Orbital Period1.91202300 yr ± 5.59e+00
Physical Parameters
H (abs. magnitude)26.95
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual—″
Uncertainty6
Orbit TypeApollo
MOID0.020582 AU
Observations Used25
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-10
Observations (25)
Date Type RA Dec Mag Band Observatory
2021-10-09 08:51:40 C 02 14 40.71 +06 56 25.5 V G96
2021-10-09 08:59:46 C 02 14 43.56 +06 58 46.4 V G96
2021-10-09 09:07:52 C 02 14 46.43 +07 01 08.1 V G96
2021-10-09 09:15:59 C 02 14 49.25 +07 03 29.2 V G96
2021-10-09 11:01:30 C 02 15 27.06 +07 34 14.8 V G96
2021-10-09 11:02:32 C 02 15 27.45 +07 34 33.2 V G96
2021-10-09 11:03:34 C 02 15 27.84 +07 34 51.1 V G96
2021-10-09 20:54:40 C 02 20 08.13 +10 33 49.8 V 246
2021-10-09 20:58:22 C 02 20 09.74 +10 35 00.7 V 246
2021-10-09 20:58:41 C 02 20 09.84 +10 35 06.4 V 246
2021-10-09 20:59:20 C 02 20 10.11 +10 35 17.8 V 246
2021-10-09 21:00:19 C 02 20 10.52 +10 35 37.1 V 246
2021-10-10 02:26:26 C 02 22 30.21 +12 20 45.2 V I93
2021-10-10 02:31:12 C 02 22 32.24 +12 22 19.1 V I93
2021-10-10 02:36:00 C 02 22 34.28 +12 23 52.1 V I93
2021-10-10 07:29:21 C 02 25 11.02 +14 02 04.4 V 654
2021-10-10 07:57:19 C 02 25 23.25 +14 11 33.6 V 654
2021-10-10 08:27:35 C 02 25 36.48 +14 21 50.3 V 654
2021-10-10 20:12:30 C 02 32 05.64 +18 27 20.9 V 246
2021-10-10 20:12:54 C 02 32 05.79 +18 27 29.3 V 246
2021-10-10 20:13:19 C 02 32 06.02 +18 27 38.2 V 246
2021-10-10 20:13:43 C 02 32 06.31 +18 27 47.2 V 246
2021-10-10 20:14:08 C 02 32 06.38 +18 27 58.0 V 246
2021-10-10 20:14:32 C 02 32 06.66 +18 28 05.7 V 246
2021-10-10 20:14:57 C 02 32 06.89 +18 28 14.7 V 246