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
2021-08-14 10:02:29 C 22 10 30.40 -15 03 50.6 V 474
2021-08-14 10:05:06 C 22 10 31.81 -15 03 51.9 V 474
2021-08-14 10:07:43 C 22 10 33.24 -15 03 53.0 V 474
2021-08-15 09:41:23 C 22 26 31.30 -15 15 35.4 V T05
2021-08-15 10:19:05 C 22 27 00.05 -15 15 50.4 V T05
2021-08-15 10:23:50 C 22 27 03.66 -15 15 52.5 V T05
2021-08-15 10:31:44 C 22 27 09.75 -15 15 55.5 V T05
2021-08-16 10:55:18 C 22 52 04.86 -15 20 35.2 V T05
2021-08-16 11:00:34 C 22 52 11.19 -15 20 35.1 V T05
2021-08-16 11:08:33 C 22 52 20.75 -15 20 35.3 V T05
2021-08-16 11:32:51 C 22 52 50.12 -15 20 34.3 V T05
2021-08-17 12:39:35 C 23 34 45.11 -15 04 11.4 V T08
2021-08-17 12:40:15 C 23 34 46.50 -15 04 10.3 V T08
2021-08-17 13:31:12 C 23 36 33.00 -15 02 43.1 V T08
2021-08-17 13:37:10 C 23 36 45.60 -15 02 32.2 V T08
2021-08-17 13:46:28 C 23 37 05.29 -15 02 15.3 V T08
2021-08-18 16:51:55 V 00 58 46.45 -12 56 56.5 V 247
2021-08-18 16:51:55 v 1 172.5876 -43.4953 247
2021-08-18 16:54:34 V 00 58 56.70 -12 56 34.1 V 247
2021-08-18 16:54:34 v 1 172.5876 -43.4953 247
2021-08-18 16:57:14 V 00 59 07.04 -12 56 12.0 V 247
2021-08-18 16:57:14 v 1 172.5876 -43.4953 247