2021 OJ

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3983315076 ± 2.86e-07
Semi-major axis (a)0.8645846054 AU ± 5.93e-09
Inclination (i)42.80731478° ± 4.99e-05
Long. of Asc. Node (Ω)303.88896622° ± 5.50e-06
Arg. of Perihelion (ω)167.02302555° ± 3.05e-05
Mean Anomaly (M)347.12399491° ± 6.94e-05
Mean Motion (n)1.2260298066°/day ± 1.26e-08
Perihelion dist (q)0.52019332 AU ± 2.47e-07
Aphelion dist (Q)1.20897589 AU ± 2.47e-07
Orbital Period0.80391706 yr ± 8.26e-09
Physical Parameters
H (abs. magnitude)22.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.218″
Uncertainty0
Orbit TypeAten
MOID0.166313 AU
Observations Used32
Oppositions2
Arc Total2017-2025
First Observation Used2017-08-15
Last Observation Used2025-07-19
Observations (32)
Date Type RA Dec Mag Band Observatory
2017-08-15 07:34:53 C 17 54 52.725 +46 43 01.85 V F51
2017-08-15 07:54:13 C 17 54 44.243 +46 43 08.14 V F51
2017-08-15 08:32:58 C 17 54 27.330 +46 43 20.45 V F51
2017-08-18 06:31:22 C 17 27 22.154 +46 52 09.15 V F51
2017-08-18 06:49:17 C 17 27 15.558 +46 52 07.60 V F51
2017-08-18 07:07:10 C 17 27 09.095 +46 52 06.12 V F51
2017-08-18 07:25:03 C 17 27 02.539 +46 52 04.44 V F51
2021-07-08 13:45:07 C 23 33 12.534 -27 36 22.05 V F51
2021-07-08 14:00:24 C 23 33 09.794 -27 36 02.17 V F51
2021-07-08 14:18:28 C 23 33 06.557 -27 35 38.40 V F51
2021-07-16 13:14:31 C 22 48 43.734 -21 40 17.36 U F51
2021-07-16 13:30:22 C 22 48 38.720 -21 39 36.55 U F51
2021-07-16 13:46:15 C 22 48 33.677 -21 38 55.59 U F51
2021-07-17 12:56:00 C 22 41 13.969 -20 36 26.92 V F51
2021-07-17 13:12:27 C 22 41 08.437 -20 35 41.07 V F51
2021-07-17 13:28:56 C 22 41 02.861 -20 34 54.55 V F51
2021-07-18 10:54:51 C 22 33 50.115 -19 31 53.71 U F51
2021-07-18 11:20:26 C 22 33 40.976 -19 30 36.48 U F51
2021-07-18 11:33:13 C 22 33 36.433 -19 29 57.82 U F51
2021-07-19 11:39:44 C 22 24 55.509 -18 12 41.74 U F51
2021-07-19 11:53:26 C 22 24 50.264 -18 11 55.82 U F51
2021-07-19 12:07:10 C 22 24 44.991 -18 11 10.06 U F51
2021-07-28 01:59:28 C 20 48 53.81 -02 16 05.0 u 807
2021-07-28 02:06:19 C 20 48 50.06 -02 15 26.7 u 807
2021-07-28 02:13:06 C 20 48 46.33 -02 14 48.0 u 807
2021-08-09 21:54:48 C 18 17 59.40 +21 03 38.4 V 033
2021-08-09 21:57:33 C 18 17 58.36 +21 03 45.6 V 033
2021-08-09 22:00:17 C 18 17 57.35 +21 03 52.7 V 033
2025-07-19 13:42:01 C 21 39 09.564 -40 08 12.77 W 474
2025-07-19 13:45:45 C 21 39 07.440 -40 08 04.34 W 474
2025-07-19 13:49:28 C 21 39 05.364 -40 07 55.81 W 474
2025-07-19 13:56:56 C 21 39 01.176 -40 07 39.29 W 474