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
2020-05-15 07:22:57 C 13 55 06.69 +43 32 34.5 V G96
2020-05-16 09:06:18 C 13 53 56.41 +42 38 51.3 V I52
2020-05-16 09:10:27 C 13 53 56.17 +42 38 41.7 V I52
2020-05-16 09:12:30 C 13 53 56.12 +42 38 39.3 V I52
2020-05-18 08:46:54 C 13 52 05.29 +41 03 18.0 V I52
2020-05-18 08:48:58 C 13 52 05.22 +41 03 12.9 V I52
2020-05-18 08:51:01 C 13 52 05.13 +41 03 09.4 V I52
2020-05-23 06:58:50 C 13 48 56.15 +37 26 09.7 V I52
2020-05-23 07:01:35 C 13 48 56.07 +37 26 05.0 V I52
2020-05-23 07:04:20 C 13 48 56.01 +37 25 59.9 V I52
2020-05-23 07:07:06 C 13 48 55.96 +37 25 55.0 V I52
2020-06-09 07:27:02 C 13 47 58.33 +27 35 22.1 V V06
2020-06-09 07:31:48 C 13 47 58.32 +27 35 16.3 V V06
2020-06-09 07:41:17 C 13 47 58.48 +27 35 04.6 V V06
2022-06-24 12:05:03 C 20 44 36.294 -04 09 06.97 U F52
2022-06-24 12:23:36 C 20 44 35.604 -04 09 08.04 U F52
2022-06-24 13:00:43 C 20 44 34.191 -04 09 10.55 U F52
2022-07-01 07:35:30 C 20 37 34.04 -04 26 40.7 u H21
2022-07-01 07:51:12 C 20 37 33.19 -04 26 42.9 u H21
2022-07-01 08:07:11 C 20 37 32.37 -04 26 45.4 u H21
2022-07-04 05:33:05 C 20 33 50.44 -04 38 28.4 u H21
2022-07-04 05:45:37 C 20 33 49.70 -04 38 30.6 u H21
2022-07-04 05:52:17 C 20 33 49.32 -04 38 31.7 u H21
2022-07-05 05:57:37 C 20 32 25.93 -04 43 16.1 u H21
2022-07-05 06:08:25 C 20 32 25.28 -04 43 18.0 u H21
2022-07-05 06:22:19 C 20 32 24.45 -04 43 20.4 u H21
2022-07-06 10:06:20 C 20 30 44.535 -04 49 09.98 U F52
2022-07-06 10:24:39 C 20 30 43.394 -04 49 14.22 U F52
2022-07-06 10:43:05 C 20 30 42.217 -04 49 18.40 U F52
2022-07-06 11:01:30 C 20 30 41.057 -04 49 22.59 U F52
2025-05-30 14:09:07 C 23 39 01.987 -00 13 29.82 X F51
2025-05-30 14:14:42 C 23 39 02.761 -00 13 26.53 X F51
2025-05-30 14:20:17 C 23 39 03.518 -00 13 23.60 X F51
2025-05-30 14:25:51 C 23 39 04.329 -00 13 20.63 X F51