2018 PW21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4916220276 ± 4.52e-04
Semi-major axis (a)2.1367540002 AU ± 1.97e-03
Inclination (i)9.16490730° ± 5.66e-03
Long. of Asc. Node (Ω)143.37318165° ± 2.67e-03
Arg. of Perihelion (ω)154.02458580° ± 5.57e-03
Mean Anomaly (M)126.49888968° ± 1.18e+00
Mean Motion (n)0.3155589394°/day ± 4.37e-04
Perihelion dist (q)1.08627867 AU ± 1.39e-03
Aphelion dist (Q)3.18722933 AU ± 3.10e-03
Orbital Period3.12343008 yr ± 4.33e-03
Physical Parameters
H (abs. magnitude)24.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.262″
Uncertainty4
Orbit TypeAmor
MOID0.087519 AU
Observations Used24
Oppositions1
Arc Total2018-2018
First Observation Used2018-08-11
Last Observation Used2018-09-06
Observations (25)
Date Type RA Dec Mag Band Observatory
2018-08-11 11:50:34 C 22 10 49.694 -04 28 50.31 U F51
2018-08-11 12:07:51 C 22 10 54.032 -04 29 51.09 U F51
2018-08-11 12:25:07 C 22 10 58.376 -04 30 51.70 U F51
2018-08-11 12:42:31 C 22 11 02.756 -04 31 52.80 U F51
2018-08-12 00:18:46 C 22 14 12.90 -05 12 44.2 V 104
2018-08-12 00:32:35 C 22 14 16.35 -05 13 31.6 V 104
2018-08-12 00:46:22 C 22 14 19.80 -05 14 19.0 V 104
2018-08-12 07:11:57 C 22 16 02.10 -05 36 11.3 u H21
2018-08-12 07:16:17 C 22 16 03.17 -05 36 25.8 u H21
2018-08-12 07:23:33 C 22 16 04.94 -05 36 50.4 u H21
2018-08-12 08:55:45 C 22 16 28.10 -05 42 02.6 U 734
2018-08-12 09:05:43 C 22 16 30.57 -05 42 35.1 U 734
2018-08-12 09:15:40 C 22 16 33.02 -05 43 09.7 U 734
2018-08-12 11:23:42 C 22 17 08.461 -05 49 58.45 V 568
2018-08-12 11:27:47 C 22 17 09.440 -05 50 12.22 V 568
2018-08-12 11:30:31 C 22 17 10.092 -05 50 21.41 V 568
2018-08-15 04:53:50 C 22 33 04.60 -09 14 14.9 u 807
2018-08-15 05:00:23 C 22 33 05.93 -09 14 34.2 u 807
2018-08-15 05:07:04 C 22 33 07.32 -09 14 53.7 u 807
2018-08-17 09:57:25 C 22 44 20.152 -11 39 56.02 U F51
2018-08-17 10:13:54 C 22 44 23.100 -11 40 38.24 U F51
2018-08-17 10:29:45 C 22 44 25.948 -11 41 18.58 U F51
2018-09-06 04:29:03 C 23 38 25.66 -22 43 35.8 U 807
2018-09-06 04:55:18 C 23 38 26.81 -22 43 51.8 U 807
2018-09-06 05:20:59 C 23 38 27.93 -22 44 07.4 U 807