IAA RAS IAA Minor Planet Database

2021 TW7

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2459914264 ± 5.53e-04
Semi-major axis (a)1.1136906705 AU ± 6.15e-04
Inclination (i)10.98572464° ± 2.21e-02
Long. of Asc. Node (Ω)30.69038218° ± 8.86e-03
Arg. of Perihelion (ω)75.91475019° ± 3.90e-02
Mean Anomaly (M)121.86255155° ± 9.52e-01
Mean Motion (n)0.8386203636°/day ± 6.95e-04
Perihelion dist (q)0.83973231 AU ± 7.71e-04
Aphelion dist (Q)1.38764903 AU ± 9.83e-04
Orbital Period1.17529496 yr ± 9.73e-04
Physical Parameters
H (abs. magnitude)24.12
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.150″
Uncertainty3
Orbit TypeApollo
MOID0.006018 AU
Observations Used18
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-05
Last Observation Used2021-10-09
Observations (18)
Date Type RA Dec Mag Band Observatory
2021-10-05 12:51:07 C 05 03 04.048 -05 47 42.69 – U F52
2021-10-05 13:08:46 C 05 03 09.686 -05 47 00.13 – U F52
2021-10-05 13:26:25 C 05 03 15.319 -05 46 17.53 – U F52
2021-10-05 15:05:46 C 05 03 47.113 -05 42 15.43 – V F51
2021-10-05 15:06:42 C 05 03 47.391 -05 42 13.30 – V F51
2021-10-06 13:14:02 C 05 11 41.714 -04 45 36.83 – V F51
2021-10-06 13:15:13 C 05 11 42.125 -04 45 33.68 – V F51
2021-10-06 13:36:37 C 05 11 49.489 -04 44 36.79 – V F51
2021-10-06 13:37:48 C 05 11 49.892 -04 44 33.57 – V F51
2021-10-06 13:45:15 C 05 11 52.451 -04 44 13.77 – V F51
2021-10-09 10:59:23 C 05 40 20.93 -01 11 38.5 – V H01
2021-10-09 10:59:32 C 05 40 21.42 -01 11 34.8 – o 291
2021-10-09 11:05:35 C 05 40 24.07 -01 11 13.5 – o 291
2021-10-09 11:10:11 C 05 40 25.62 -01 11 00.7 – V H01
2021-10-09 11:11:34 C 05 40 26.67 -01 10 52.6 – o 291
2021-10-09 11:20:33 C 05 40 30.13 -01 10 24.4 – V H01
2021-10-09 11:29:36 C 05 40 34.05 -01 09 52.5 – V H01
2021-10-09 12:52:17 C 05 41 15.059 -01 04 39.94 – V 568