IAA RAS IAA Minor Planet Database

2021 PW4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3857149000
Semi-major axis (a)1.6419072000 AU
Inclination (i)1.19761000°
Long. of Asc. Node (Ω)188.38285000°
Arg. of Perihelion (ω)99.82913000°
Mean Anomaly (M)24.71093000°
Mean Motion (n)0.4684693100°/day
Perihelion dist (q)1.00859910 AU
Aphelion dist (Q)2.27521530 AU
Orbital Period2.10388940 yr
Physical Parameters
H (abs. magnitude)24.91
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.760″
Uncertainty6
Orbit TypeAmor
MOID0.019281 AU
Observations Used81
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-09-09
Observations (85)
Date Type RA Dec Mag Band Observatory
2021-08-07 11:02:26 C 19 21 49.07 +12 12 37.2 – V T08
2021-08-07 11:20:48 C 19 22 08.26 +12 11 49.0 – V T08
2021-08-07 11:28:29 C 19 22 16.31 +12 11 29.5 – V T08
2021-08-07 12:01:31 C 19 22 50.75 +12 10 04.4 – V T08
2021-08-10 10:09:42 C 20 29 20.57 +09 10 22.6 – V T08
2021-08-10 11:00:40 C 20 29 57.48 +09 08 12.6 – V T08
2021-08-10 11:41:07 C 20 30 26.80 +09 06 28.5 – V T08
2021-08-10 12:16:59 C 20 30 52.95 +09 04 55.3 – V T08
2021-08-10 19:42:20 C 20 36 48.89 +08 44 48.6 – o K88
2021-08-10 19:45:26 C 20 36 51.07 +08 44 40.9 – o K88
2021-08-10 19:48:55 C 20 36 53.56 +08 44 32.5 – o K88
2021-08-10 19:52:45 C 20 36 55.05 +08 44 22.2 – V L18
2021-08-10 19:58:14 C 20 36 58.95 +08 44 08.3 – V L18
2021-08-10 20:03:45 C 20 37 02.82 +08 43 54.4 – V L18
2021-08-10 20:09:15 C 20 37 06.75 +08 43 42.4 – V L18
2021-08-10 20:23:11 C 20 37 19.76 +08 43 15.7 – V 203
2021-08-10 20:34:51 C 20 37 29.81 +08 42 49.5 – X 958
2021-08-10 20:38:57 C 20 37 30.85 +08 42 37.2 – V 203
2021-08-10 20:40:39 C 20 37 33.90 +08 42 36.2 – X 958
2021-08-10 20:47:19 C 20 37 38.60 +08 42 20.0 – X 958
2021-08-10 20:52:31 C 20 37 40.41 +08 42 05.0 – V 203
2021-08-10 20:54:38 C 20 37 41.08 +08 42 01.4 – X L01
2021-08-10 20:56:11 C 20 37 42.18 +08 41 57.8 – X L01
2021-08-10 20:57:46 C 20 37 43.26 +08 41 54.0 – X L01
2021-08-10 21:10:16 C 20 37 53.21 +08 41 25.9 – q C77
2021-08-10 21:18:12 C 20 37 58.75 +08 41 06.6 – q C77
2021-08-10 21:26:07 C 20 38 04.26 +08 40 47.5 – q C77
2021-08-10 22:10:26 C 20 38 40.741 +08 39 52.19 – V J04
2021-08-10 22:10:45 C 20 38 40.971 +08 39 51.74 – V J04
2021-08-10 22:11:03 C 20 38 41.175 +08 39 51.07 – V J04
2021-08-10 22:18:04 C 20 38 41.50 +08 38 20.1 – V J69
2021-08-10 22:31:41 C 20 38 49.40 +08 38 04.1 – V 204
2021-08-10 22:34:02 C 20 38 52.59 +08 37 41.9 – V J69
2021-08-10 22:39:14 C 20 38 54.59 +08 37 45.5 – V 204
2021-08-10 22:46:46 C 20 38 59.79 +08 37 27.4 – V 204
2021-08-10 22:54:18 C 20 39 04.99 +08 37 09.0 – V 204
2021-08-10 23:10:24 C 20 39 15.67 +08 36 13.6 – V 033
2021-08-10 23:10:49 C 20 39 15.96 +08 36 12.6 – V 033
2021-08-10 23:11:13 C 20 39 16.23 +08 36 11.6 – V 033
2021-08-10 23:11:43 C 20 39 16.57 +08 36 10.5 – V 033
2021-08-11 01:32:50 C 20 40 54.33 +08 30 21.6 – V 033
2021-08-11 01:33:14 C 20 40 54.62 +08 30 20.4 – V 033
2021-08-11 01:33:38 C 20 40 54.90 +08 30 19.6 – V 033
2021-08-11 06:01:48 C 20 44 17.70 +08 20 31.5 – V 654
2021-08-11 06:04:40 C 20 44 19.58 +08 20 24.7 – V 654
2021-08-11 06:42:38 C 20 44 44.36 +08 18 54.9 – V 654
2021-08-11 06:45:31 C 20 44 46.23 +08 18 48.0 – V 654
2021-08-11 20:10:10 C 20 53 56.24 +07 46 23.6 – V 033
2021-08-11 20:10:35 C 20 53 56.49 +07 46 22.8 – V 033
2021-08-11 20:10:59 C 20 53 56.74 +07 46 21.9 – V 033