IAA RAS IAA Minor Planet Database

2007 HW4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7792287924 ± 1.31e-06
Semi-major axis (a)1.5358981485 AU ± 1.29e-07
Inclination (i)1.28594481° ± 1.44e-05
Long. of Asc. Node (Ω)139.76558268° ± 1.07e-03
Arg. of Perihelion (ω)196.19321092° ± 1.25e-03
Mean Anomaly (M)246.40360461° ± 3.94e-04
Mean Motion (n)0.5178078748°/day ± 6.54e-08
Perihelion dist (q)0.33908209 AU ± 2.02e-06
Aphelion dist (Q)2.73271421 AU ± 2.03e-06
Orbital Period1.90345943 yr ± 2.40e-07
Physical Parameters
H (abs. magnitude)23.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.485″
Uncertainty0
Orbit TypeApollo
MOID0.015330 AU
Observations Used44
Oppositions6
Arc Total2007-2019
First Observation Used2007-04-20
Last Observation Used2019-01-11
Observations (44)
Date Type RA Dec Mag Band Observatory
2007-04-20 06:53:48 C 13 42 00.64 +00 24 07.2 – r G96
2007-04-20 07:01:49 C 13 41 57.40 +00 24 45.5 – r G96
2007-04-20 07:09:54 C 13 41 54.09 +00 25 24.7 – r G96
2007-04-20 07:17:55 C 13 41 50.82 +00 26 03.6 – r G96
2007-04-20 09:24:42 C 13 40 58.62 +00 36 22.7 – r G96
2007-04-20 09:25:30 C 13 40 58.33 +00 36 26.6 – r G96
2007-04-20 09:26:15 C 13 40 58.00 +00 36 30.4 – r G96
2007-04-20 09:27:01 C 13 40 57.68 +00 36 33.9 – r G96
2007-04-20 19:47:15 C 13 36 43.38 +01 29 26.0 – c 246
2007-04-20 19:48:29 C 13 36 42.87 +01 29 33.7 – c 246
2007-04-20 21:41:56 C 13 35 51.88 +01 39 46.1 – r 024
2007-04-20 21:48:04 C 13 35 49.07 +01 40 19.9 – r 024
2007-04-20 21:48:37 C 13 35 48.65 +01 40 26.4 – c 595
2007-04-20 21:54:13 C 13 35 46.28 +01 40 53.7 – r 024
2007-04-20 22:07:10 C 13 35 40.36 +01 42 04.0 – r 024
2007-04-20 22:10:33 C 13 35 38.65 +01 42 26.0 – c 595
2007-04-20 22:16:29 C 13 35 36.11 +01 42 55.1 – r A17
2007-04-20 22:22:41 C 13 35 33.19 +01 43 30.1 – r 024
2007-04-20 22:32:54 C 13 35 28.36 +01 44 28.0 – c 595
2007-04-20 22:33:52 C 13 35 28.01 +01 44 31.3 – r A17
2007-04-20 22:52:35 C 13 35 19.46 +01 46 14.1 – r A17
2007-04-21 00:22:44 C 13 34 38.19 +01 54 30.5 – r J95
2007-04-21 00:34:43 C 13 34 32.58 +01 55 38.2 – r J95
2007-04-21 04:33:06 C 13 32 44.55 +02 18 22.2 – r 734
2007-04-21 04:38:47 C 13 32 41.84 +02 18 55.0 – r 734
2007-04-21 04:44:48 C 13 32 38.85 +02 19 30.3 – r 734
2007-04-21 04:50:47 C 13 32 35.96 +02 20 04.1 – r 734
2007-04-21 04:56:40 C 13 32 32.57 +02 20 38.0 20.7 o H55
2007-04-21 05:04:55 C 13 32 28.54 +02 21 25.9 20.6 o H55
2007-04-21 05:14:04 C 13 32 24.06 +02 22 18.8 20.9 o H55
2007-04-21 21:35:42 C 13 24 04.66 +04 04 10.6 – o 151
2007-04-21 21:41:07 C 13 24 01.61 +04 04 45.9 – o 151
2007-04-21 21:46:32 C 13 23 58.53 +04 05 20.1 – o 151
2019-01-09 03:19:27 C 04 32 27.24 +16 58 14.7 – V I52
2019-01-09 03:26:21 C 04 32 28.60 +16 58 25.9 – V I52
2019-01-09 03:32:30 C 04 32 29.79 +16 58 35.5 – V I52
2019-01-09 03:38:38 C 04 32 31.00 +16 58 45.9 – V I52
2019-01-09 05:18:30 C 04 32 50.33 +17 01 22.4 – o 691
2019-01-09 05:28:02 C 04 32 52.19 +17 01 37.3 – o 691
2019-01-09 07:22:41 C 04 33 14.21 +17 04 30.1 – V V06
2019-01-09 07:27:29 C 04 33 15.13 +17 04 37.4 – V V06
2019-01-09 07:51:08 C 04 33 19.73 +17 05 12.7 – V V06
2019-01-11 07:25:18 C 04 41 41.80 +18 06 42.5 – o 691
2019-01-11 07:48:33 C 04 41 45.13 +18 07 07.0 – o 691