2021 TH4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3756611587 ± 1.24e-06
Semi-major axis (a)1.7954580356 AU ± 3.98e-06
Inclination (i)22.39180568° ± 3.16e-05
Long. of Asc. Node (Ω)71.25922404° ± 1.30e-05
Arg. of Perihelion (ω)29.30480275° ± 3.15e-05
Mean Anomaly (M)224.66386328° ± 1.93e-03
Mean Motion (n)0.4096843627°/day ± 1.36e-06
Perihelion dist (q)1.12097419 AU ± 3.33e-06
Aphelion dist (Q)2.46994188 AU ± 5.91e-06
Orbital Period2.40581866 yr ± 8.01e-06
Physical Parameters
H (abs. magnitude)19.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.260″
Uncertainty1
Orbit TypeAmor
MOID0.166172 AU
Observations Used117
Oppositions1
Arc Total2021-2022
First Observation Used2021-09-15
Last Observation Used2022-05-04
Observations (119)
Date Type RA Dec Mag Band Observatory
2021-11-28 12:38:13 C 07 56 00.15 +28 26 31.2 V G96
2021-11-28 12:45:34 C 07 56 01.61 +28 27 01.3 V G96
2021-11-28 12:55:01 C 07 56 03.49 +28 27 39.6 V G96
2021-11-28 13:06:06 C 07 56 05.71 +28 28 24.8 V G96
2021-11-28 14:54:40 C 07 56 29.092 +28 35 59.48 U F51
2021-11-28 15:06:50 C 07 56 31.509 +28 36 49.15 U F51
2021-11-28 15:18:57 C 07 56 33.921 +28 37 38.60 U F51
2021-11-28 15:31:05 C 07 56 36.334 +28 38 28.00 U F51
2021-11-30 01:08:13 C 08 03 53.01 +30 57 50.1 Z C95
2021-11-30 01:11:13 C 08 03 53.65 +30 58 03.7 Z C95
2021-11-30 01:14:12 C 08 03 54.32 +30 58 15.3 Z C95
2021-12-03 07:28:01 C 08 22 18.75 +36 31 40.8 V 703
2021-12-03 07:35:58 C 08 22 20.56 +36 32 16.0 V 703
2021-12-03 07:43:56 C 08 22 22.48 +36 32 50.5 V 703
2021-12-04 10:04:26 C 08 29 04.49 +38 26 06.6 V G96
2021-12-04 10:13:35 C 08 29 06.77 +38 26 46.1 V G96
2021-12-04 10:22:50 C 08 29 09.07 +38 27 26.0 V G96
2021-12-04 10:32:09 C 08 29 11.39 +38 28 06.0 V G96
2021-12-06 07:15:56 C 08 41 19.24 +41 38 41.3 V 703
2021-12-06 07:23:57 C 08 41 21.39 +41 39 15.6 V 703
2021-12-06 07:31:57 C 08 41 23.64 +41 39 50.0 V 703
2021-12-06 07:39:57 C 08 41 25.79 +41 40 24.7 V 703
2021-12-10 11:58:08 C 09 11 54.04 +48 28 33.1 V T08
2021-12-10 12:09:27 C 09 11 57.66 +48 29 18.0 V T08
2021-12-10 12:12:07 C 09 11 58.51 +48 29 27.7 V T08
2021-12-10 12:17:29 C 09 12 00.17 +48 29 48.6 V T08
2021-12-10 12:24:13 C 09 12 02.34 +48 30 15.4 V T08
2021-12-10 12:42:25 C 09 12 08.01 +48 31 26.8 V T08
2021-12-12 07:20:19 C 09 26 36.42 +51 10 26.6 V 703
2021-12-12 07:28:02 C 09 26 39.10 +51 10 55.1 V 703
2021-12-12 07:35:48 C 09 26 41.77 +51 11 24.1 V 703
2021-12-12 07:43:32 C 09 26 44.35 +51 11 52.8 V 703
2021-12-13 11:07:51 C 09 36 27.59 +52 48 38.8 V G96
2021-12-13 11:43:37 C 09 36 40.03 +52 50 41.7 V G96
2021-12-13 11:52:37 C 09 36 43.15 +52 51 12.5 V G96
2021-12-13 12:00:48 C 09 36 45.97 +52 51 40.5 V G96
2021-12-14 13:16:43 C 09 46 07.58 +54 16 15.3 V T08
2021-12-14 13:27:12 C 09 46 11.39 +54 16 49.5 V T08
2021-12-14 13:39:10 C 09 46 15.64 +54 17 28.8 V T08
2021-12-16 10:43:45 C 10 03 37.90 +56 36 40.6 V 703
2021-12-16 10:53:03 C 10 03 41.52 +56 37 08.0 V 703
2021-12-16 11:02:06 C 10 03 44.80 +56 37 34.1 V 703
2021-12-16 11:11:02 C 10 03 48.14 +56 38 00.6 V 703
2021-12-26 14:48:15 C 11 46 44.70 +64 47 45.0 V T08
2021-12-26 14:50:55 C 11 46 45.56 +64 47 47.4 V T08
2021-12-26 15:15:31 C 11 46 55.67 +64 48 16.8 V T08
2021-12-26 15:36:57 C 11 47 04.16 +64 48 41.8 V T08
2022-01-03 10:04:37 C 12 59 01.77 +67 02 26.8 V 703
2022-01-03 10:12:20 C 12 59 04.30 +67 02 30.4 V 703
2022-01-03 10:20:03 C 12 59 06.81 +67 02 33.6 V 703