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
2022-01-03 10:27:46 C 12 59 09.32 +67 02 35.9 V 703
2022-01-13 11:29:11 C 14 03 36.26 +67 36 11.0 V 703
2022-01-13 11:36:20 C 14 03 37.65 +67 36 11.3 V 703
2022-01-13 11:43:28 C 14 03 38.83 +67 36 12.5 V 703
2022-01-13 11:50:35 C 14 03 40.13 +67 36 12.9 V 703
2022-03-15 10:43:32 C 13 15 33.475 +63 35 04.65 U F52
2022-03-15 10:52:08 C 13 15 32.262 +63 34 57.53 U F52
2022-03-15 11:00:35 C 13 15 30.997 +63 34 50.63 U F52
2022-04-07 06:27:23 C 12 21 27.004 +52 53 41.64 V G96
2022-04-07 06:34:58 C 12 21 26.593 +52 53 30.91 V G96
2022-04-07 06:42:32 C 12 21 26.111 +52 53 20.33 V G96
2022-04-07 06:50:06 C 12 21 25.585 +52 53 09.92 V G96
2022-05-02 02:53:33 C 12 07 06.67 +37 56 35.2 u H21
2022-05-02 02:57:35 C 12 07 06.66 +37 56 29.4 u H21
2022-05-02 03:11:16 C 12 07 06.67 +37 56 09.0 u H21
2022-05-04 05:14:07 C 12 07 20.629 +36 41 49.88 V V06
2022-05-04 05:17:08 C 12 07 20.618 +36 41 45.74 V V06
2022-05-04 05:20:10 C 12 07 20.622 +36 41 41.39 V V06
2022-05-04 05:23:12 C 12 07 20.636 +36 41 37.57 V V06