2003 HM

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2696223179 ± 5.65e-08
Semi-major axis (a)0.8137555169 AU ± 4.07e-10
Inclination (i)26.27311079° ± 6.06e-06
Long. of Asc. Node (Ω)30.43838191° ± 1.09e-06
Arg. of Perihelion (ω)19.36427176° ± 1.70e-05
Mean Anomaly (M)69.00896487° ± 3.07e-05
Mean Motion (n)1.3426764056°/day ± 1.01e-09
Perihelion dist (q)0.59434887 AU ± 4.60e-08
Aphelion dist (Q)1.03316217 AU ± 4.60e-08
Orbital Period0.73407582 yr ± 5.50e-10
NGA Modelr2
A2-1.18449339e-13 ± 5.44e-16 AU/d²
Physical Parameters
H (abs. magnitude)22.11
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.284″
Uncertainty0
Orbit TypeAten
MOID0.006718 AU
Observations Used123
Radar Obs Used9
Oppositions4
Arc Total2003-2025
First Observation Used2003-04-23
Last Observation Used2025-05-10
Observations (139)
Date Type RA Dec Mag Band Observatory
2003-04-23 03:17:27 C 08 45 36.48 +25 52 41.4 18.3 c 704
2003-04-23 03:32:15 C 08 45 35.82 +25 47 24.7 18.6 c 704
2003-04-23 03:47:01 C 08 45 35.20 +25 42 10.5 18.8 c 704
2003-04-23 04:01:47 C 08 45 34.54 +25 36 55.2 18.4 c 704
2003-04-23 20:02:49 C 08 45 35.67 +20 12 25.9 c 246
2003-04-23 20:03:14 C 08 45 35.65 +20 12 16.1 c 246
2003-04-23 20:03:44 C 08 45 35.63 +20 12 06.7 c 246
2003-04-23 20:04:07 C 08 45 35.61 +20 11 58.3 c 246
2003-04-23 20:04:50 C 08 45 35.64 +20 11 45.9 c 246
2003-04-23 20:05:20 C 08 45 35.58 +20 11 35.8 c 246
2003-04-23 20:13:23 C 08 45 35.63 +20 09 08.9 c 587
2003-04-23 20:14:59 C 08 45 35.60 +20 08 38.2 c 587
2003-04-23 20:16:34 C 08 45 35.60 +20 08 07.4 c 587
2003-04-23 20:22:06 C 08 45 35.41 +20 06 19.7 c 587
2003-04-23 20:23:42 C 08 45 35.34 +20 05 48.8 c 587
2003-04-23 21:33:26 C 08 45 35.15 +19 43 18.0 o J95
2003-04-23 21:41:14 C 08 45 34.95 +19 40 49.2 o J95
2003-04-23 22:06:51 C 08 45 34.44 +19 32 38.8 o J95
2003-04-23 22:14:50 C 08 45 34.26 +19 30 05.4 o J95
2003-04-24 03:04:14 C 08 45 37.61 +18 01 02.1 c 926
2003-04-24 03:04:41 C 08 45 37.59 +18 00 54.3 c 926
2003-04-24 03:05:06 C 08 45 37.55 +18 00 46.2 c 926
2003-04-24 03:57:25 C 08 45 35.51 +17 44 39.2 c 854
2003-04-24 03:58:35 C 08 45 35.44 +17 44 18.6 c 854
2003-04-24 04:00:53 C 08 45 35.36 +17 43 36.1 c 854
2003-04-24 04:03:13 C 08 45 35.28 +17 42 54.3 c 854
2003-04-24 21:06:32 C 08 45 35.31 +12 47 46.3 c 246
2003-04-24 21:06:57 C 08 45 35.34 +12 47 39.5 c 246
2003-04-24 21:07:32 C 08 45 35.29 +12 47 29.7 c 246
2003-04-24 21:08:08 C 08 45 35.31 +12 47 20.0 c 246
2003-04-24 21:08:40 C 08 45 35.33 +12 47 11.6 c 246
2003-04-24 21:09:16 C 08 45 35.30 +12 47 01.7 c 246
2003-04-24 21:09:49 C 08 45 35.29 +12 46 52.3 c 246
2003-04-24 21:10:30 C 08 45 35.27 +12 46 42.2 c 246
2003-04-26 02:46:05 C 08 45 40.01 +05 34 17.7 c 446
2003-04-26 03:02:13 C 08 45 39.59 +05 30 45.9 c 446
2003-04-26 03:22:52 C 08 45 40.21 +05 26 06.4 18.3 c 704
2003-04-26 03:40:10 C 08 45 39.70 +05 22 20.4 18.9 c 704
2003-04-26 03:57:40 C 08 45 39.25 +05 18 32.8 19.1 c 704
2003-04-26 04:15:04 C 08 45 38.83 +05 14 45.6 18.6 c 704
2003-04-26 04:32:26 C 08 45 38.51 +05 11 00.9 18.7 c 704
2003-04-27 03:20:18 C 08 45 43.98 +00 39 08.6 18.6 c 704
2003-04-27 03:38:02 C 08 45 43.60 +00 35 53.7 19.0 c 704
2003-04-27 03:55:20 C 08 45 43.22 +00 32 44.8 18.9 c 704
2003-04-27 04:12:36 C 08 45 42.87 +00 29 36.8 19.2 c 704
2003-04-27 04:29:49 C 08 45 42.45 +00 26 28.6 18.9 c 704
2003-05-01 03:09:39 C 08 46 10.86 -12 08 25.2 c 926
2003-05-01 03:10:41 C 08 46 10.84 -12 08 30.8 c 926
2003-05-01 03:11:39 C 08 46 10.84 -12 08 36.8 c 926
2003-05-01 03:12:40 C 08 46 10.83 -12 08 42.5 c 926
Radar Observations (9)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-04-25 21:54:00 -146454 4 Hz 2380 -1 -1
2003-04-25 22:22:00 -147572.1264 2 Hz 2380 -1 -1
2003-04-25 23:00:00 61469233.44 1 us 2380 -1 -1
2014-04-19 21:20:00 87427.586 3 Hz 8560 -14 -14
2014-04-24 22:00:00 -137240.0681 0.5 Hz 2380 -1 -1
2014-04-24 22:38:00 55721614.57 4 us 2380 -1 -1
2014-04-24 23:32:00 55912192.83 0.5 us 2380 -1 -1
2014-04-24 23:32:00 -141142.8101 0.15 Hz 2380 -1 -1
2014-04-25 22:58:00 61164830.07 0.5 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)