IAA RAS IAA Minor Planet Database

2018 PY21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4248408235 ± 1.43e-04
Semi-major axis (a)2.1990465439 AU ± 6.49e-04
Inclination (i)6.84397360° ± 1.85e-03
Long. of Asc. Node (Ω)150.72430546° ± 9.50e-04
Arg. of Perihelion (ω)154.38446422° ± 3.17e-03
Mean Anomaly (M)90.61258615° ± 3.62e-01
Mean Motion (n)0.3022460570°/day ± 1.34e-04
Perihelion dist (q)1.26480180 AU ± 4.88e-04
Aphelion dist (Q)3.13329129 AU ± 9.77e-04
Orbital Period3.26100626 yr ± 1.44e-03
Physical Parameters
H (abs. magnitude)23.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.160″
Uncertainty3
Orbit TypeAmor
MOID0.253926 AU
Observations Used16
Oppositions1
Arc Total2018-2018
First Observation Used2018-08-11
Last Observation Used2018-09-05
Observations (16)
Date Type RA Dec Mag Band Observatory
2018-08-11 12:01:07 C 22 43 48.444 -03 49 20.49 – U F51
2018-08-11 12:18:23 C 22 43 49.159 -03 49 35.27 – U F51
2018-08-11 12:35:40 C 22 43 49.871 -03 49 49.82 – U F51
2018-08-11 12:53:03 C 22 43 50.602 -03 50 04.84 – U F51
2018-08-12 07:50:37 C 22 44 47.02 -04 06 23.8 – u H21
2018-08-12 07:58:12 C 22 44 47.35 -04 06 30.4 – u H21
2018-08-12 08:07:50 C 22 44 47.76 -04 06 38.5 – u H21
2018-08-12 11:40:31 C 22 44 58.481 -04 09 32.60 – V 568
2018-08-12 11:44:37 C 22 44 58.650 -04 09 36.12 – V 568
2018-08-12 11:47:36 C 22 44 58.767 -04 09 38.63 – V 568
2018-08-15 05:33:06 C 22 48 00.52 -05 06 28.4 – U 807
2018-08-15 05:41:09 C 22 48 00.82 -05 06 35.6 – U 807
2018-08-15 05:50:21 C 22 48 01.16 -05 06 43.6 – U 807
2018-09-05 05:55:40 C 23 02 49.14 -12 03 19.6 – U 807
2018-09-05 06:11:33 C 23 02 49.38 -12 03 29.8 – U 807
2018-09-05 06:27:27 C 23 02 49.57 -12 03 40.8 – U 807