2021 PK4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3606816000
Semi-major axis (a)1.2678953000 AU
Inclination (i)11.76321000°
Long. of Asc. Node (Ω)134.60770000°
Arg. of Perihelion (ω)103.67797000°
Mean Anomaly (M)40.90555000°
Mean Motion (n)0.6903653100°/day
Perihelion dist (q)0.81058880 AU
Aphelion dist (Q)1.72520180 AU
Orbital Period1.42766100 yr
Physical Parameters
H (abs. magnitude)28.19
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.500″
Uncertainty8
Orbit TypeApollo
MOID0.000181 AU
Observations Used15
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-08-10
Observations (15)
Date Type RA Dec Mag Band Observatory
2021-08-08 06:42:52 C 22 11 00.76 -35 40 02.5 V W94
2021-08-08 06:51:14 C 22 10 59.91 -35 42 06.8 V W94
2021-08-08 06:59:34 C 22 10 58.93 -35 44 09.0 V W94
2021-08-08 08:30:06 C 22 10 52.12 -36 04 34.2 V W95
2021-08-08 08:37:40 C 22 10 51.81 -36 06 09.5 V W95
2021-08-08 08:45:11 C 22 10 51.54 -36 07 42.6 V W95
2021-08-09 04:46:17 C 22 13 39.11 -39 09 10.9 V W95
2021-08-09 04:55:05 C 22 13 38.04 -39 10 03.9 V W95
2021-08-09 05:01:57 C 22 13 37.23 -39 10 44.2 V W95
2021-08-09 14:18:03 C 22 13 56.14 -39 53 46.3 V 474
2021-08-09 14:23:11 C 22 13 55.79 -39 54 07.3 V 474
2021-08-09 14:28:18 C 22 13 55.38 -39 54 28.6 V 474
2021-08-10 02:51:27 C 22 14 39.39 -40 41 19.3 X Y00
2021-08-10 03:01:11 C 22 14 38.45 -40 41 52.7 X Y00
2021-08-10 03:10:55 C 22 14 37.50 -40 42 22.7 X Y00