2021 TD21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3578359367 ± 1.88e-06
Semi-major axis (a)1.9115535947 AU ± 7.83e-06
Inclination (i)13.33752591° ± 6.49e-05
Long. of Asc. Node (Ω)212.02269730° ± 2.44e-05
Arg. of Perihelion (ω)240.35226976° ± 1.34e-04
Mean Anomaly (M)167.93519313° ± 3.23e-03
Mean Motion (n)0.3729344967°/day ± 2.29e-06
Perihelion dist (q)1.22753102 AU ± 6.18e-06
Aphelion dist (Q)2.59557617 AU ± 1.12e-05
Orbital Period2.64289384 yr ± 1.62e-05
Physical Parameters
H (abs. magnitude)21.71
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.194″
Uncertainty1
Orbit TypeAmor
MOID0.308990 AU
Observations Used66
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-13
Last Observation Used2022-01-26
Observations (70)
Date Type RA Dec Mag Band Observatory
2021-10-13 13:40:31 C 02 58 48.882 +19 12 44.73 V F52
2021-10-13 14:17:25 C 02 58 49.614 +19 12 09.22 V F52
2021-10-14 09:01:47 C 02 59 17.456 +18 54 05.12 U F51
2021-10-14 09:37:20 C 02 59 18.124 +18 53 30.81 U F51
2021-10-14 09:54:57 C 02 59 18.427 +18 53 13.47 U F51
2021-10-14 12:48:08 C 02 59 21.499 +18 50 23.97 V F51
2021-10-14 12:49:04 C 02 59 21.510 +18 50 23.06 V F51
2021-10-16 07:00:36 C 03 00 16.71 +18 07 19.3 u H21
2021-10-16 07:08:39 C 03 00 16.82 +18 07 11.4 u H21
2021-10-16 07:18:44 C 03 00 17.00 +18 07 00.1 u H21
2021-10-16 09:28:11 C 03 00 19.52 +18 04 45.4 o 691
2021-10-16 09:36:53 C 03 00 19.68 +18 04 36.9 o 691
2021-10-16 09:45:36 C 03 00 19.85 +18 04 27.6 o 691
2021-10-27 08:19:24 C 03 04 03.24 +12 31 54.7 V V06
2021-10-27 08:21:59 C 03 04 03.24 +12 31 50.7 V V06
2021-10-27 08:24:33 C 03 04 03.26 +12 31 47.1 V V06
2021-10-27 09:19:23 C 03 04 03.42 +12 30 26.4 V G96
2021-10-27 09:26:57 C 03 04 03.44 +12 30 14.7 V G96
2021-10-27 09:34:32 C 03 04 03.47 +12 30 04.1 V G96
2021-10-27 09:42:06 C 03 04 03.48 +12 29 52.6 V G96
2021-11-01 09:29:16 C 03 04 46.229 +09 23 57.90 U F51
2021-11-01 09:45:05 C 03 04 46.195 +09 23 32.16 U F51
2021-11-01 10:00:55 C 03 04 46.146 +09 23 06.54 U F51
2021-11-07 09:26:28 C 03 05 02.355 +05 19 58.82 U F52
2021-11-07 09:43:02 C 03 05 02.259 +05 19 29.88 U F52
2021-11-07 09:59:41 C 03 05 02.160 +05 19 00.78 U F52
2021-11-07 10:16:26 C 03 05 02.053 +05 18 31.45 U F52
2021-11-10 07:12:39 C 03 05 03.03 +03 16 57.4 V G96
2021-11-10 07:20:07 C 03 05 02.98 +03 16 43.9 V G96
2021-11-10 07:27:39 C 03 05 02.93 +03 16 30.7 V G96
2021-11-10 07:35:08 C 03 05 02.88 +03 16 17.8 V G96
2021-11-12 05:11:15 C 03 05 03.99 +01 55 22.2 V I52
2021-11-12 05:14:22 C 03 05 04.06 +01 55 17.0 V I52
2021-11-12 05:17:29 C 03 05 03.96 +01 55 10.9 V I52
2021-11-12 05:21:10 C 03 05 03.94 +01 55 04.5 V I52
2021-11-12 10:35:49 C 03 05 03.167 +01 45 50.93 U F51
2021-11-12 10:55:33 C 03 05 03.036 +01 45 15.87 U F51
2021-11-12 11:13:02 C 03 05 02.921 +01 44 44.74 U F51
2021-11-22 09:21:24 C 03 05 35.089 -05 04 13.13 U F51
2021-11-22 09:39:11 C 03 05 35.053 -05 04 41.91 U F51
2021-11-22 10:14:46 C 03 05 34.994 -05 05 39.32 U F51
2021-11-25 08:17:03 C 03 06 04.567 -06 55 34.62 U F52
2021-11-25 08:32:37 C 03 06 04.586 -06 55 58.34 U F52
2021-11-25 08:48:16 C 03 06 04.599 -06 56 22.12 U F52
2021-11-25 09:03:57 C 03 06 04.632 -06 56 46.06 U F52
2021-11-28 10:13:59 C 03 06 48.483 -08 43 54.19 U F51
2021-11-28 10:31:14 C 03 06 48.568 -08 44 18.15 U F51
2021-11-28 10:48:31 C 03 06 48.666 -08 44 42.62 U F51
2021-11-28 11:05:54 C 03 06 48.741 -08 45 06.56 U F51
2021-12-06 04:45:22 C 03 10 05.17 -12 35 05.1 V G96