2021 TK4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3298331905 ± 9.27e-06
Semi-major axis (a)1.8121923591 AU ± 3.07e-05
Inclination (i)2.38337907° ± 3.69e-05
Long. of Asc. Node (Ω)87.51627980° ± 5.29e-04
Arg. of Perihelion (ω)275.63952572° ± 1.05e-03
Mean Anomaly (M)255.07728047° ± 1.54e-02
Mean Motion (n)0.4040227625°/day ± 1.03e-05
Perihelion dist (q)1.21447117 AU ± 2.66e-05
Aphelion dist (Q)2.40991355 AU ± 4.42e-05
Orbital Period2.43953157 yr ± 6.21e-05
Physical Parameters
H (abs. magnitude)23.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.120″
Uncertainty2
Orbit TypeAmor
MOID0.214631 AU
Observations Used23
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-11
Last Observation Used2021-10-30
Observations (23)
Date Type RA Dec Mag Band Observatory
2021-09-11 07:24:04 C 01 47 29.42 -01 16 27.3 V G96
2021-09-11 07:37:45 C 01 47 30.33 -01 16 24.0 V G96
2021-09-11 07:44:36 C 01 47 30.78 -01 16 22.1 V G96
2021-09-27 11:37:33 C 02 09 50.223 +00 17 09.10 V F52
2021-09-27 11:55:01 C 02 09 50.716 +00 17 13.38 V F52
2021-09-27 12:12:33 C 02 09 51.216 +00 17 17.57 V F52
2021-09-28 10:16:46 C 02 10 42.293 +00 22 52.33 V F52
2021-09-28 10:34:05 C 02 10 42.770 +00 22 56.60 V F52
2021-10-03 13:09:17 C 02 14 25.585 +00 54 59.63 U F51
2021-10-03 13:26:27 C 02 14 25.847 +00 55 04.29 U F51
2021-10-03 13:43:33 C 02 14 26.112 +00 55 08.99 U F51
2021-10-03 14:00:39 C 02 14 26.380 +00 55 13.56 U F51
2021-10-05 13:39:55 C 02 15 30.165 +01 08 18.22 V F51
2021-10-05 14:31:35 C 02 15 30.790 +01 08 32.37 V F51
2021-10-05 15:01:41 C 02 15 31.162 +01 08 40.67 V F51
2021-10-07 10:10:13 C 02 16 20.560 +01 20 53.36 V F51
2021-10-07 10:33:20 C 02 16 20.726 +01 21 00.62 V F51
2021-10-13 11:17:53 C 02 17 52.279 +02 05 01.82 U F51
2021-10-13 11:34:38 C 02 17 52.214 +02 05 07.11 U F51
2021-10-13 11:51:28 C 02 17 52.159 +02 05 12.78 U F51
2021-10-30 09:47:44 C 02 16 49.637 +04 35 07.10 U F51
2021-10-30 10:06:01 C 02 16 49.364 +04 35 14.65 U F51
2021-10-30 10:24:15 C 02 16 49.090 +04 35 22.21 U F51