IAA RAS IAA Minor Planet Database

2021 TP21

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6775799786 ± 2.15e-07
Semi-major axis (a)2.5185801425 AU ± 2.31e-08
Inclination (i)25.41694534° ± 1.50e-05
Long. of Asc. Node (Ω)8.05183292° ± 2.37e-05
Arg. of Perihelion (ω)116.31644798° ± 5.85e-05
Mean Anomaly (M)353.78382752° ± 7.90e-06
Mean Motion (n)0.2465917904°/day ± 3.39e-09
Perihelion dist (q)0.81204066 AU ± 5.42e-07
Aphelion dist (Q)4.22511962 AU ± 5.44e-07
Orbital Period3.99699553 yr ± 5.50e-08
Physical Parameters
H (abs. magnitude)20.22
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.194″
Uncertainty0
Orbit TypeApollo
MOID0.033890 AU
Observations Used74
Oppositions6
Arc Total2017-2025
First Observation Used2017-08-04
Last Observation Used2025-09-20
Observations (76)
Date Type RA Dec Mag Band Observatory
2017-08-04 14:15:43 C 02 38 52.176 +16 30 01.58 – V F51
2017-08-04 14:33:38 C 02 38 53.384 +16 30 15.27 – V F51
2017-09-01 13:22:03 C 03 30 01.658 +27 04 32.56 – V F51
2017-09-01 13:37:57 C 03 30 03.042 +27 04 51.72 – V F51
2021-09-08 12:39:53 C 03 33 35.019 +29 21 59.91 – V F52
2021-09-08 12:56:28 C 03 33 36.446 +29 22 22.78 – V F52
2021-09-08 13:13:03 C 03 33 37.877 +29 22 45.85 – V F52
2021-09-08 13:29:42 C 03 33 39.345 +29 23 09.04 – V F52
2021-10-11 11:16:06 C 05 46 56.10 +56 20 52.2 – V G96
2021-10-11 11:24:20 C 05 46 59.00 +56 21 13.5 – V G96
2021-10-11 11:32:33 C 05 47 01.92 +56 21 34.2 – V G96
2021-10-11 11:41:21 C 05 47 05.07 +56 21 56.8 – V G96
2021-10-12 02:14:05 C 05 52 29.96 +56 58 59.3 – V L01
2021-10-12 02:19:04 C 05 52 31.87 +56 59 13.0 – V L01
2021-10-12 02:24:04 C 05 52 33.79 +56 59 25.8 – V L01
2021-10-12 02:34:10 C 05 52 37.37 +56 59 50.2 – V L01
2021-10-13 09:16:35 C 06 04 52.68 +58 17 02.9 – V G96
2021-10-13 09:17:41 C 06 04 53.16 +58 17 05.5 – V G96
2021-10-13 09:18:47 C 06 04 53.58 +58 17 08.2 – V G96
2021-10-13 09:19:53 C 06 04 54.04 +58 17 11.1 – V G96
2021-10-14 01:30:59 C 06 11 49.53 +58 56 55.5 – V 204
2021-10-14 02:11:17 C 06 12 06.97 +58 58 34.7 – V 204
2021-10-17 07:54:10 C 06 50 36.99 +61 55 18.7 – u H21
2021-10-17 08:00:52 C 06 50 40.75 +61 55 33.1 – u H21
2021-10-17 08:05:26 C 06 50 43.23 +61 55 42.6 – u H21
2021-10-17 10:15:39 C 06 51 55.01 +62 00 14.0 – V 734
2021-10-17 10:25:15 C 06 52 00.18 +62 00 34.0 – V 734
2021-10-17 10:44:28 C 06 52 10.73 +62 01 13.4 – V 734
2021-10-19 03:18:11 C 07 16 09.600 +63 18 28.40 – V Z84
2021-10-19 03:54:33 C 07 16 32.011 +63 19 32.62 – V Z84
2021-10-19 04:30:53 C 07 16 54.396 +63 20 36.32 – V Z84
2021-10-20 10:45:38 C 07 36 31.94 +64 08 45.1 – V 695
2021-10-20 10:54:13 C 07 36 37.64 +64 08 57.9 – V 695
2021-10-20 11:02:49 C 07 36 43.35 +64 09 10.6 – V 695
2021-10-20 11:20:22 C 07 36 56.396 +64 09 30.08 – V F51
2021-10-20 12:02:07 C 07 37 24.270 +64 10 32.46 – V F51
2021-10-20 12:22:55 C 07 37 38.160 +64 11 03.29 – V F51
2021-10-23 14:02:40 C 08 30 41.893 +65 24 36.83 – V F51
2021-10-23 14:18:33 C 08 30 53.768 +65 24 45.75 – V F51
2021-10-23 14:34:24 C 08 31 05.638 +65 24 54.54 – V F51
2021-10-24 23:08:17 C 08 56 05.983 +65 34 11.50 – V Z84
2021-10-25 08:00:50 C 09 02 59.10 +65 34 18.3 – o 291
2021-10-25 08:10:53 C 09 03 06.85 +65 34 17.9 – o 291
2021-10-25 08:20:56 C 09 03 14.65 +65 34 18.3 – o 291
2021-10-27 12:05:49 C 09 43 04.86 +65 11 41.2 – V 291
2021-10-27 12:18:37 C 09 43 14.44 +65 11 31.3 – V 291
2021-10-27 12:31:26 C 09 43 24.03 +65 11 21.4 – V 291
2021-10-27 14:07:01 C 09 44 37.321 +65 10 00.79 – V F52
2021-10-27 14:24:38 C 09 44 50.479 +65 09 46.98 – V F52
2021-10-28 10:12:07 C 09 59 38.48 +64 50 17.7 – V 291