2021 TD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.0804245000
Semi-major axis (a)1.1763758000 AU
Inclination (i)37.39860000°
Long. of Asc. Node (Ω)190.94155000°
Arg. of Perihelion (ω)248.30435000°
Mean Anomaly (M)23.31888000°
Mean Motion (n)0.7724759700°/day
Perihelion dist (q)1.08176640 AU
Aphelion dist (Q)1.27098520 AU
Orbital Period1.27590730 yr
Physical Parameters
H (abs. magnitude)23.52
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.640″
Uncertainty7
Orbit TypeAmor
MOID0.132277 AU
Observations Used12
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-13
Observations (14)
Date Type RA Dec Mag Band Observatory
2021-09-25 08:48:23 C 23 23 32.939 +39 49 50.86 V F52
2021-09-25 09:05:09 C 23 23 32.657 +39 48 05.00 V F52
2021-10-06 07:02:08 C 23 25 53.189 +00 06 04.07 V F51
2021-10-06 07:18:55 C 23 25 53.248 +00 03 04.91 U F51
2021-10-06 07:35:42 C 23 25 53.299 +00 00 06.41 U F51
2021-10-06 07:52:33 C 23 25 53.342 -00 02 53.44 V F51
2021-10-06 10:03:19 C 23 25 53.671 -00 26 06.83 V F51
2021-10-06 10:04:14 C 23 25 53.670 -00 26 16.41 V F51
2021-10-06 20:27:59 C 23 26 08.33 -02 17 01.5 V I93
2021-10-06 20:45:48 C 23 26 08.46 -02 20 10.5 V I93
2021-10-06 21:03:55 C 23 26 08.59 -02 23 21.5 V I93
2021-10-13 10:20:26 C 23 30 20.36 -26 47 12.6 V 474
2021-10-13 10:28:20 C 23 30 20.48 -26 48 14.4 V 474
2021-10-13 10:36:11 C 23 30 20.55 -26 49 13.8 V 474