2021 TK20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8392868000
Semi-major axis (a)2.5660598000 AU
Inclination (i)11.05952000°
Long. of Asc. Node (Ω)190.61038000°
Arg. of Perihelion (ω)311.54821000°
Mean Anomaly (M)344.68551000°
Mean Motion (n)0.2397750000°/day
Perihelion dist (q)0.41239970 AU
Aphelion dist (Q)4.71971990 AU
Orbital Period4.11055210 yr
Physical Parameters
H (abs. magnitude)22.49
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.730″
Uncertainty7
Orbit TypeApollo
MOID0.080408 AU
Observations Used32
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-28
Observations (33)
Date Type RA Dec Mag Band Observatory
2021-10-03 07:03:53 C 02 20 18.20 +09 15 57.8 V V00
2021-10-03 07:19:27 C 02 20 17.98 +09 15 41.7 V V00
2021-10-13 10:56:26 C 02 13 25.844 +02 37 34.45 U F51
2021-10-13 11:13:12 C 02 13 24.844 +02 36 52.32 U F51
2021-10-13 11:46:47 C 02 13 22.831 +02 35 28.08 U F51
2021-10-13 13:48:53 C 02 13 15.532 +02 30 19.16 V F51
2021-10-13 13:49:49 C 02 13 15.484 +02 30 16.50 V F51
2021-10-13 21:05:59 C 02 12 54.23 +02 11 21.0 V L01
2021-10-13 21:11:36 C 02 12 53.84 +02 11 06.7 V L01
2021-10-13 21:16:06 C 02 12 53.62 +02 10 55.4 V L01
2021-10-14 01:19:25 C 02 12 39.07 +02 00 12.8 V I93
2021-10-14 01:30:14 C 02 12 38.41 +01 59 44.4 V I93
2021-10-14 01:41:02 C 02 12 37.75 +01 59 15.1 V I93
2021-10-15 03:56:30 C 02 11 04.16 +00 45 43.4 u 807
2021-10-15 04:04:19 C 02 11 03.58 +00 45 19.3 u 807
2021-10-15 04:12:12 C 02 11 03.02 +00 44 56.3 u 807
2021-10-16 05:26:17 C 02 09 19.47 -00 35 34.9 o 291
2021-10-16 05:28:40 C 02 09 19.12 -00 35 44.5 X 858
2021-10-16 05:44:21 C 02 09 17.83 -00 36 36.7 X 858
2021-10-16 05:49:31 C 02 09 17.61 -00 36 52.6 o 291
2021-10-16 05:58:27 C 02 09 16.70 -00 37 24.3 X 858
2021-10-24 02:04:13 C 01 43 45.25 -18 19 18.8 u 807
2021-10-24 02:08:49 C 01 43 44.07 -18 20 01.2 u 807
2021-10-24 02:13:20 C 01 43 42.92 -18 20 42.4 u 807
2021-10-25 04:35:48 C 01 36 34.81 -22 40 55.9 u 807
2021-10-25 04:40:20 C 01 36 33.45 -22 41 43.6 u 807
2021-10-25 04:44:45 C 01 36 32.04 -22 42 30.8 u 807
2021-10-26 01:48:25 C 01 29 37.43 -26 40 45.1 u 807
2021-10-26 01:52:56 C 01 29 35.71 -26 41 39.1 u 807
2021-10-26 01:57:31 C 01 29 33.98 -26 42 34.6 u 807
2021-10-28 01:09:23 C 01 07 34.78 -37 24 08.5 u 807
2021-10-28 01:14:49 C 01 07 31.47 -37 25 30.9 u 807
2021-10-28 01:20:15 C 01 07 28.12 -37 26 53.6 u 807