2021 PY4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5985067000
Semi-major axis (a)1.9288933000 AU
Inclination (i)14.35474000°
Long. of Asc. Node (Ω)132.95818000°
Arg. of Perihelion (ω)111.16457000°
Mean Anomaly (M)234.47378000°
Mean Motion (n)0.3679101400°/day
Perihelion dist (q)0.77443770 AU
Aphelion dist (Q)3.08334890 AU
Orbital Period2.67893580 yr
Physical Parameters
H (abs. magnitude)26.54
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.390″
Uncertainty8
Orbit TypeApollo
MOID0.000840 AU
Observations Used11
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-08-10
Observations (11)
Date Type RA Dec Mag Band Observatory
2021-08-07 10:12:07 C 21 51 50.949 -39 10 28.68 U F51
2021-08-07 10:27:04 C 21 51 57.070 -39 10 56.31 U F51
2021-08-07 10:42:01 C 21 52 03.011 -39 11 22.26 U F51
2021-08-07 10:56:58 C 21 52 08.970 -39 11 47.22 U F51
2021-08-07 20:26:07 C 21 56 48.50 -39 18 46.1 V L81
2021-08-07 20:33:55 C 21 56 50.76 -39 18 59.8 V L81
2021-08-07 20:41:40 C 21 56 53.01 -39 19 13.0 V L81
2021-08-09 14:00:37 C 22 05 41.67 -39 42 01.7 V 474
2021-08-09 14:05:41 C 22 05 42.09 -39 42 02.8 V 474
2021-08-09 14:10:45 C 22 05 42.44 -39 42 03.8 V 474
2021-08-10 02:06:01 C 22 07 06.257 -39 48 06.80 V J04