2021 PJ1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3436640055 ± 1.57e-07
Semi-major axis (a)1.2149589783 AU ± 7.70e-09
Inclination (i)0.37314499° ± 3.20e-07
Long. of Asc. Node (Ω)223.79996729° ± 6.03e-04
Arg. of Perihelion (ω)178.03358139° ± 5.89e-04
Mean Anomaly (M)28.33808508° ± 5.18e-06
Mean Motion (n)0.7359865098°/day ± 6.99e-09
Perihelion dist (q)0.79742131 AU ± 1.91e-07
Aphelion dist (Q)1.63249665 AU ± 1.91e-07
Orbital Period1.33919069 yr ± 1.27e-08
Physical Parameters
H (abs. magnitude)25.78
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.178″
Uncertainty0
Orbit TypeApollo
MOID0.006109 AU
Observations Used77
Radar Obs Used1
Oppositions1
Arc Total2021-2025
First Observation Used2021-08-04
Last Observation Used2025-08-11
Observations (89)
Date Type RA Dec Mag Band Observatory
2021-08-11 20:01:45 C 19 11 43.76 -04 17 45.5 V 033
2021-08-11 20:02:17 C 19 11 43.04 -04 17 41.2 V 033
2021-08-11 22:48:32 C 19 08 09.85 -03 55 15.6 V K38
2021-08-11 23:03:11 C 19 07 50.58 -03 53 13.8 V K38
2021-08-11 23:22:43 C 19 07 24.74 -03 50 33.5 V K38
2021-08-12 04:00:35 C 19 01 23.54 -03 01 37.1 V W86
2021-08-12 04:02:59 C 19 01 20.01 -03 01 15.1 V W86
2021-08-12 04:04:48 C 19 01 17.37 -03 00 58.6 V W86
2021-08-12 04:43:12 C 19 00 21.00 -02 55 04.6 V W86
2021-08-12 04:53:11 C 19 00 06.29 -02 53 31.6 V W86
2021-08-12 05:22:34 C 18 59 22.97 -02 48 56.6 V W86
2021-08-12 19:46:45 C 18 36 44.46 -00 24 27.7 V 033
2021-08-12 19:47:10 C 18 36 43.67 -00 24 22.5 V 033
2021-08-12 19:47:34 C 18 36 42.89 -00 24 17.5 V 033
2021-08-12 19:51:38 C 18 36 29.20 -00 23 13.9 V L18
2021-08-12 19:54:58 C 18 36 22.69 -00 22 31.8 V L18
2021-08-12 19:58:18 C 18 36 16.24 -00 21 51.6 V L18
2021-08-12 20:58:35 C 18 34 26.37 -00 08 49.1 V K19
2021-08-12 21:08:43 C 18 34 06.29 -00 06 40.8 V K19
2021-08-12 21:21:01 C 18 33 39.41 -00 04 03.4 V 160
2021-08-12 21:23:21 C 18 33 34.82 -00 03 35.1 V 160
2021-08-12 21:25:42 C 18 33 30.09 -00 03 04.9 V 160
2021-08-13 22:44:47 C 17 30 52.58 +06 49 16.9 V 204
2021-08-13 22:49:32 C 17 30 37.21 +06 50 51.0 V 204
2021-08-13 22:54:56 C 17 30 19.76 +06 52 38.3 V 204
2021-08-14 19:47:26 C 16 12 00.17 +14 30 28.1 V 033
2021-08-14 19:47:50 C 16 11 58.33 +14 30 37.1 V 033
2021-08-14 19:48:15 C 16 11 56.49 +14 30 46.2 V 033
2021-08-14 19:48:44 C 16 11 54.37 +14 30 56.6 V 033
2025-08-03 23:42:53 C 20 30 46.99 -12 26 46.8 V Z84
2025-08-03 23:48:42 C 20 30 45.92 -12 26 41.5 V Z84
2025-08-03 23:54:34 C 20 30 44.83 -12 26 36.6 V Z84
2025-08-04 22:52:25 B 20 27 01.274 -12 05 24.97 X J57
2025-08-04 23:26:17 B 20 26 54.007 -12 04 50.66 X J57
2025-08-05 00:00:02 B 20 26 46.733 -12 04 16.21 X J57
2025-08-05 22:24:35 B 20 22 24.336 -11 39 03.67 X L34
2025-08-11 21:21:42 B 19 08 51.557 -03 58 10.63 X K87
2025-08-11 21:48:08 B 19 08 17.465 -03 54 37.80 X K87
2025-08-11 22:14:59 B 19 07 42.566 -03 50 59.46 X K87
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2021-08-14 21:30:00 96449.267 1 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)