2021 PJ4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6770805434 ± 2.00e+00
Semi-major axis (a)2.4606242313 AU ± 3.00e+00
Inclination (i)2.09101551° ± 4.00e+00
Long. of Asc. Node (Ω)137.01236425° ± 5.00e+00
Arg. of Perihelion (ω)253.28366507° ± 6.00e+00
Mean Anomaly (M)26.25455157° ± 8.32e-02
Mean Motion (n)0.2553484100°/day ± 4.67e-01
Perihelion dist (q)0.79458370 AU ± 5.02e+00
Aphelion dist (Q)4.12668710 AU ± 7.04e+00
Orbital Period3.85985420 yr ± 7.06e+00
Physical Parameters
H (abs. magnitude)24.26
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.276″
Uncertainty2
Orbit TypeApollo
MOID0.007049 AU
Observations Used68
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-08-18
Observations (72)
Date Type RA Dec Mag Band Observatory
2021-08-02 11:27:59 C 21 17 23.883 -14 10 23.39 U F51
2021-08-02 12:00:24 C 21 17 25.371 -14 10 25.12 U F51
2021-08-07 16:10:28 C 21 27 58.09 -14 23 48.3 q D29
2021-08-07 16:30:50 C 21 28 00.15 -14 23 50.6 q D29
2021-08-07 16:51:11 C 21 28 02.20 -14 23 54.1 q D29
2021-08-09 00:39:31 C 21 32 18.75 -14 29 36.9 q L01
2021-08-09 00:41:48 C 21 32 19.05 -14 29 38.0 q L01
2021-08-09 00:48:39 C 21 32 20.00 -14 29 39.5 q L01
2021-08-09 00:50:55 C 21 32 20.27 -14 29 39.4 q L01
2021-08-09 00:53:11 C 21 32 20.60 -14 29 39.6 q L01
2021-08-09 02:49:48 C 21 32 40.67 -14 28 40.4 X Y00
2021-08-09 02:58:08 C 21 32 41.77 -14 28 42.7 X Y00
2021-08-09 03:06:28 C 21 32 42.85 -14 28 43.7 X Y00
2021-08-09 08:41:01 C 21 33 38.097 -14 30 45.81 U F51
2021-08-09 09:14:41 C 21 33 42.793 -14 30 53.95 U F51
2021-08-09 09:32:08 C 21 33 45.216 -14 30 58.11 U F51
2021-08-09 12:59:32 C 21 34 19.18 -14 30 19.9 q E23
2021-08-09 13:19:32 C 21 34 22.07 -14 30 24.5 q E23
2021-08-09 13:39:32 C 21 34 24.98 -14 30 29.5 q E23
2021-08-09 21:39:48 C 21 35 49.22 -14 33 58.5 V K51
2021-08-09 21:55:19 C 21 35 51.73 -14 34 02.3 V K51
2021-08-09 22:13:02 C 21 35 54.57 -14 34 06.5 V K51
2021-08-09 23:24:54 C 21 36 07.25 -14 34 20.7 X 958
2021-08-09 23:35:41 C 21 36 08.97 -14 34 23.2 X 958
2021-08-09 23:46:29 C 21 36 10.74 -14 34 27.2 X 958
2021-08-10 06:04:34 C 21 37 23.31 -14 35 41.0 V 654
2021-08-10 07:07:16 C 21 37 34.02 -14 35 57.9 V 654
2021-08-10 08:07:49 C 21 37 44.35 -14 36 13.0 V 654
2021-08-11 23:48:27 C 21 47 03.17 -14 47 05.7 V 204
2021-08-11 23:55:20 C 21 47 04.97 -14 47 07.9 V 204
2021-08-12 09:37:35 C 21 50 00.92 -14 49 33.1 V T05
2021-08-12 09:40:13 C 21 50 01.78 -14 49 33.9 V T05
2021-08-12 09:44:10 C 21 50 02.73 -14 49 35.3 V T05
2021-08-12 10:24:13 C 21 50 14.15 -14 49 48.8 V T05
2021-08-12 11:13:48 C 21 50 28.09 -14 50 04.9 V T05
2021-08-12 11:52:13 C 21 50 39.06 -14 50 16.7 V T05
2021-08-12 12:33:23 C 21 50 50.99 -14 50 28.6 V T05
2021-08-12 13:09:02 C 21 51 01.37 -14 50 37.9 V T05
2021-08-12 14:17:31 C 21 51 21.94 -14 50 51.5 V T08
2021-08-12 14:17:48 C 21 51 22.18 -14 50 53.7 V T05
2021-08-12 14:18:11 C 21 51 22.14 -14 50 51.6 V T08
2021-08-12 14:19:08 C 21 51 22.54 -14 50 54.1 V T05
2021-08-12 14:19:31 C 21 51 22.53 -14 50 51.1 V T08
2021-08-12 14:20:11 C 21 51 22.75 -14 50 51.7 V T08
2021-08-12 14:20:26 C 21 51 22.94 -14 50 54.5 V T05
2021-08-12 14:21:06 C 21 51 23.16 -14 50 54.6 V T05
2021-08-12 23:39:17 C 21 54 43.63 -14 54 57.7 V 033
2021-08-12 23:39:42 C 21 54 43.75 -14 54 57.8 V 033
2021-08-12 23:40:06 C 21 54 43.90 -14 54 58.0 V 033
2021-08-12 23:40:35 C 21 54 44.07 -14 54 57.9 V 033