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
2021-10-28 10:27:21 C 09 59 49.71 +64 50 01.7 V 291
2021-10-30 10:39:25 C 10 34 01.15 +63 41 19.9 o 291
2021-10-30 10:43:16 C 10 34 03.72 +63 41 13.2 o 291
2021-10-30 10:47:09 C 10 34 06.34 +63 41 06.7 o 291
2021-11-03 23:17:49 C 11 38 20.147 +59 37 47.86 V N50
2021-11-03 23:24:10 C 11 38 23.399 +59 37 31.05 V N50
2021-11-04 01:44:36 C 11 39 34.208 +59 31 04.21 V Z84
2021-11-04 05:55:31 C 11 41 39.360 +59 20 00.30 V Z24
2021-11-04 06:08:23 C 11 41 45.667 +59 19 26.07 V Z24
2021-11-04 10:45:40 C 11 44 02.36 +59 06 44.9 o 291
2021-11-04 11:03:08 C 11 44 10.70 +59 05 57.5 o 291
2021-11-04 11:20:31 C 11 44 19.29 +59 05 11.2 o 291
2025-08-19 12:43:29 C 02 57 49.168 +20 36 44.79 V F52
2025-08-19 12:58:22 C 02 57 50.169 +20 36 59.09 V F52
2025-08-19 13:13:20 C 02 57 51.212 +20 37 12.94 V F52
2025-08-19 13:28:12 C 02 57 52.242 +20 37 26.88 V F52
2025-08-24 14:08:37 C 03 06 34.571 +22 34 08.82 V T14
2025-08-24 14:11:02 C 03 06 34.746 +22 34 11.29 V T14
2025-08-24 14:13:26 C 03 06 34.919 +22 34 13.70 V T14
2025-08-25 13:30:14 C 03 08 18.834 +22 58 01.21 V T12
2025-08-25 13:38:02 C 03 08 19.406 +22 58 09.37 V T12
2025-08-25 13:46:10 C 03 08 19.997 +22 58 17.73 V T12
2025-08-25 13:54:08 C 03 08 20.575 +22 58 26.00 V T12
2025-09-20 13:55:30 C 04 07 09.782 +37 25 44.34 X F52
2025-09-20 14:07:36 C 04 07 11.286 +37 26 06.84 X F52
2025-09-20 14:19:44 C 04 07 12.814 +37 26 29.44 X F52