846655 (2020 HW9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8307296383 ± 2.50e-08
Semi-major axis (a)1.9486959517 AU ± 8.66e-09
Inclination (i)22.06916099° ± 7.60e-06
Long. of Asc. Node (Ω)136.39404432° ± 1.53e-05
Arg. of Perihelion (ω)309.39733368° ± 1.31e-05
Mean Anomaly (M)36.99423045° ± 8.60e-06
Mean Motion (n)0.3623232070°/day ± 2.41e-09
Perihelion dist (q)0.32985647 AU ± 4.88e-08
Aphelion dist (Q)3.56753543 AU ± 5.13e-08
Orbital Period2.72029576 yr ± 1.81e-08
Physical Parameters
H (abs. magnitude)19.13
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.233″
Uncertainty0
Orbit TypeApollo
MOID0.065576 AU
Observations Used128
Oppositions9
Arc Total2011-2025
First Observation Used2011-06-26
Last Observation Used2025-05-30
Observations (134)
Date Type RA Dec Mag Band Observatory
2020-04-29 21:17:52 C 14 37 36.45 +59 58 15.3 V 203
2020-04-29 21:45:58 C 14 37 29.56 +59 56 43.7 V 203
2020-04-29 22:11:36 C 14 37 23.26 +59 55 19.8 V 203
2020-04-30 01:31:57 C 14 36 34.31 +59 44 21.0 V L01
2020-04-30 01:32:36 C 14 36 34.16 +59 44 18.6 V L01
2020-04-30 01:34:30 C 14 36 33.67 +59 44 12.2 V L01
2020-04-30 01:35:46 C 14 36 33.38 +59 44 08.0 V L01
2020-04-30 04:01:10 C 14 36 02.05 +59 36 14.2 V I52
2020-04-30 04:02:06 C 14 36 01.76 +59 36 10.9 V I52
2020-04-30 04:03:02 C 14 36 01.52 +59 36 07.7 V I52
2020-04-30 04:03:58 C 14 36 01.32 +59 36 04.6 V I52
2020-04-30 06:24:39 C 14 35 27.79 +59 28 29.2 V 858
2020-04-30 06:34:44 C 14 35 25.42 +59 27 56.4 V 858
2020-04-30 06:45:00 C 14 35 22.98 +59 27 23.2 V 858
2020-05-01 01:24:34 C 14 31 18.26 +58 27 07.9 V 204
2020-05-01 01:34:34 C 14 31 16.15 +58 26 35.5 V 204
2020-05-01 01:44:36 C 14 31 14.08 +58 26 03.4 V 204
2020-05-01 03:22:27 C 14 30 56.15 +58 20 50.4 V G96
2020-05-01 03:23:39 C 14 30 56.08 +58 20 47.2 V G96
2020-05-01 03:24:14 C 14 30 55.83 +58 20 44.9 V G96
2020-05-01 04:06:16 C 14 30 46.44 +58 18 34.5 u H21
2020-05-01 04:09:13 C 14 30 45.84 +58 18 25.2 u H21
2020-05-01 04:12:56 C 14 30 45.05 +58 18 13.4 u H21
2020-05-01 05:48:58 C 14 30 25.01 +58 13 08.7 q H36
2020-05-01 05:57:59 C 14 30 23.12 +58 12 40.0 q H36
2020-05-01 06:07:01 C 14 30 21.26 +58 12 11.6 q H36
2020-05-04 04:07:12 C 14 18 19.79 +54 38 43.8 u H21
2020-05-04 04:07:57 C 14 18 20.25 +54 38 41.2 V I52
2020-05-04 04:09:22 C 14 18 20.01 +54 38 37.5 V I52
2020-05-04 04:10:49 C 14 18 19.83 +54 38 33.1 V I52
2020-05-04 04:11:44 C 14 18 19.12 +54 38 30.7 u H21
2020-05-04 04:12:14 C 14 18 19.66 +54 38 29.0 V I52
2020-05-04 04:16:40 C 14 18 18.36 +54 38 16.4 u H21
2020-05-04 08:40:50 C 14 17 40.527 +54 25 30.96 U F52
2020-05-04 09:18:17 C 14 17 34.919 +54 23 42.72 U F52
2020-05-04 09:37:03 C 14 17 32.122 +54 22 48.28 U F52
2020-05-06 04:53:45 C 14 11 57.96 +52 20 22.7 V I52
2020-05-06 04:56:37 C 14 11 57.55 +52 20 14.8 V I52
2020-05-06 05:02:21 C 14 11 56.97 +52 19 59.8 V I52
2020-05-06 06:45:23 C 14 11 44.30 +52 15 17.3 V G96
2020-05-06 06:52:50 C 14 11 43.43 +52 14 56.8 V G96
2020-05-06 07:00:17 C 14 11 42.49 +52 14 36.7 V G96
2020-05-06 07:07:45 C 14 11 41.58 +52 14 15.5 V G96
2020-05-12 07:22:34 C 13 59 06.88 +46 11 32.3 V I52
2020-05-12 07:29:58 C 13 59 06.36 +46 11 15.5 V I52
2020-05-12 07:37:26 C 13 59 05.85 +46 10 57.9 V I52
2020-05-12 07:44:50 C 13 59 05.35 +46 10 40.5 V I52
2020-05-15 07:00:21 C 13 55 07.88 +43 33 22.5 V G96
2020-05-15 07:07:52 C 13 55 07.50 +43 33 06.5 V G96
2020-05-15 07:15:25 C 13 55 07.10 +43 32 50.7 V G96