IAA RAS IAA Minor Planet Database

2021 TD1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3535757603 ± 2.17e-05
Semi-major axis (a)1.2171768547 AU ± 2.41e-05
Inclination (i)2.35443624° ± 1.45e-04
Long. of Asc. Node (Ω)203.23137225° ± 3.83e-04
Arg. of Perihelion (ω)78.22280620° ± 3.22e-04
Mean Anomaly (M)77.41040555° ± 3.76e-02
Mean Motion (n)0.7339758119°/day ± 2.18e-05
Perihelion dist (q)0.78681262 AU ± 3.07e-05
Aphelion dist (Q)1.64754109 AU ± 4.20e-05
Orbital Period1.34285935 yr ± 3.99e-05
Physical Parameters
H (abs. magnitude)26.01
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.240″
Uncertainty2
Orbit TypeApollo
MOID0.001157 AU
Observations Used57
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-03
Last Observation Used2021-11-09
Observations (58)
Date Type RA Dec Mag Band Observatory
2021-10-03 08:12:10 C 00 28 00.046 +13 56 05.20 – U F51
2021-10-03 08:26:25 C 00 27 59.780 +13 55 02.45 – U F51
2021-10-03 08:40:38 C 00 27 59.491 +13 54 00.33 – U F51
2021-10-03 08:54:43 C 00 27 59.205 +13 52 58.09 – U F51
2021-10-03 11:20:07 C 00 27 55.982 +13 42 18.59 – V F51
2021-10-03 12:34:33 C 00 27 54.688 +13 36 51.13 – V F51
2021-10-03 19:44:33 C 00 28 13.84 +13 05 54.5 – V L01
2021-10-03 19:47:03 C 00 28 13.80 +13 05 44.1 – V L01
2021-10-03 19:49:32 C 00 28 13.78 +13 05 34.3 – V L01
2021-10-03 19:52:02 C 00 28 13.76 +13 05 24.7 – V L01
2021-10-03 19:54:32 C 00 28 13.73 +13 05 14.3 – V L01
2021-10-03 20:19:42 C 00 28 13.29 +13 03 27.2 – V 246
2021-10-03 20:20:01 C 00 28 13.38 +13 03 25.3 – V 246
2021-10-03 20:25:48 C 00 28 13.45 +13 03 03.5 – V 246
2021-10-03 20:26:09 C 00 28 13.22 +13 03 01.0 – V 246
2021-10-03 20:26:29 C 00 28 13.24 +13 03 00.5 – V 246
2021-10-03 20:26:50 C 00 28 13.27 +13 02 59.7 – V 246
2021-10-03 20:27:10 C 00 28 13.18 +13 02 57.4 – V 246
2021-10-04 04:08:54 C 00 28 20.45 +12 33 14.2 – u H21
2021-10-04 04:14:12 C 00 28 22.75 +12 33 00.2 – X 858
2021-10-04 04:16:58 C 00 28 20.35 +12 32 43.8 – u H21
2021-10-04 04:20:07 C 00 28 22.68 +12 32 38.2 – X 858
2021-10-04 04:24:37 C 00 28 20.24 +12 32 15.3 – u H21
2021-10-04 04:25:51 C 00 28 22.60 +12 32 16.8 – X 858
2021-10-07 04:44:44 C 00 29 21.03 +08 59 49.3 – V G96
2021-10-07 04:52:18 C 00 29 20.94 +08 59 31.8 – V G96
2021-10-07 04:59:50 C 00 29 20.86 +08 59 15.3 – V G96
2021-10-07 05:07:21 C 00 29 20.76 +08 58 58.4 – V G96
2021-10-07 06:21:43 C 00 29 19.65 +08 56 11.6 – V V06
2021-10-07 06:23:37 C 00 29 19.60 +08 56 07.0 – V V06
2021-10-07 06:24:01 C 00 29 19.62 +08 56 06.2 – V V06
2021-10-07 12:25:50 C 00 29 18.630 +08 43 05.22 – V T12
2021-10-07 12:26:22 C 00 29 18.625 +08 43 04.06 – V T12
2021-10-07 12:26:52 C 00 29 18.613 +08 43 03.00 – V T12
2021-10-08 09:33:54 C 00 29 32.64 +07 59 42.4 – o 691
2021-10-08 09:49:37 C 00 29 32.52 +07 59 12.5 – o 691
2021-10-09 07:03:34 C 00 29 48.96 +07 21 08.3 – V G96
2021-10-09 07:11:40 C 00 29 48.88 +07 20 54.8 – V G96
2021-10-09 07:19:47 C 00 29 48.75 +07 20 41.1 – V G96
2021-10-09 07:27:56 C 00 29 48.65 +07 20 27.6 – V G96
2021-10-09 12:57:08 C 00 29 48.515 +07 11 36.65 – V T12
2021-10-10 07:35:30 C 00 30 02.63 +06 42 25.8 – o 691
2021-10-10 08:01:50 C 00 30 02.35 +06 41 46.7 – o 691
2021-10-10 08:27:59 C 00 30 02.13 +06 41 08.1 – o 691
2021-10-11 05:21:15 C 00 30 17.93 +06 12 05.9 – o 691
2021-10-11 05:37:21 C 00 30 17.78 +06 11 45.3 – o 691
2021-10-11 05:53:27 C 00 30 17.61 +06 11 24.0 – o 691
2021-10-14 07:54:59 C 00 30 58.90 +04 50 10.7 – V 695
2021-10-14 08:02:22 C 00 30 58.86 +04 50 04.0 – V 695
2021-10-14 08:09:45 C 00 30 58.81 +04 49 57.1 – V 695