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
2003-05-01 03:13:39 C 08 46 10.80 -12 08 48.3 c 926
2014-04-14 23:20:19 C 20 22 25.04 +84 40 15.5 q J95
2014-04-14 23:26:03 C 20 22 19.99 +84 41 33.1 q J95
2014-04-14 23:31:39 C 20 22 14.10 +84 42 49.1 q J95
2014-04-15 21:12:23 C 15 07 22.27 +89 25 26.0 q J95
2014-04-15 21:17:57 C 14 57 39.44 +89 25 34.8 q J95
2014-04-15 21:23:33 C 14 47 47.83 +89 25 39.3 q J95
2014-04-15 22:04:04 C 13 37 58.91 +89 24 30.3 q I93
2014-04-15 22:15:37 C 13 19 12.58 +89 23 31.9 q I93
2014-04-15 22:33:22 C 12 52 27.31 +89 21 35.4 q I93
2014-04-15 22:40:18 C 12 42 47.95 +89 20 41.2 q I93
2014-04-15 22:48:22 C 12 32 03.22 +89 19 32.9 q I93
2014-04-16 22:17:54 C 09 04 15.58 +82 49 56.2 q I93
2014-04-16 22:33:27 C 09 04 00.15 +82 44 58.6 q I93
2014-04-16 22:48:40 C 09 03 45.79 +82 40 06.2 q I93
2014-04-16 23:04:21 C 09 03 31.20 +82 35 04.5 q I93
2014-04-16 23:24:49 C 09 03 20.11 +82 28 21.1 q J69
2014-04-16 23:41:02 C 09 03 06.31 +82 23 07.2 q J69
2014-04-17 00:06:20 C 09 02 46.28 +82 14 55.7 q J69
2014-04-17 00:22:33 C 09 02 33.87 +82 09 40.0 q J69
2014-04-20 20:30:58 C 08 48 20.41 +45 12 38.8 q J95
2014-04-20 20:34:06 C 08 48 20.11 +45 11 15.4 q J95
2014-04-20 20:37:13 C 08 48 19.84 +45 09 52.5 q J95
2014-05-07 04:16:43 S 08 46 54.838 -22 46 41.88 L C51
2014-05-13 19:46:36 S 08 48 18.326 -27 55 26.83 L C51
2014-05-14 06:50:02 S 08 48 24.708 -28 11 13.81 L C51
2014-05-14 14:43:40 S 08 48 29.506 -28 22 11.10 L C51
2014-05-15 00:12:17 S 08 48 35.220 -28 34 58.58 L C51
2020-01-30 15:49:01 C 16 50 53.057 -06 54 08.31 V T12
2025-04-22 03:12:21 C 08 25 42.440 +37 32 44.50 V 691
2025-04-22 03:30:40 C 08 25 45.020 +37 28 12.30 V 691
2025-04-22 03:48:03 C 08 25 47.420 +37 23 53.40 V 691
2025-04-22 19:56:34 C 08 28 23.826 +33 28 57.69 X 033
2025-04-22 19:57:29 C 08 28 23.945 +33 28 44.30 X 033
2025-04-22 19:58:22 C 08 28 24.067 +33 28 31.70 X 033
2025-04-22 19:59:15 C 08 28 24.175 +33 28 18.80 X 033
2025-04-24 03:06:42 C 08 32 35.909 +26 22 46.06 V I52
2025-04-24 03:07:01 C 08 32 35.912 +26 22 41.59 V I52
2025-04-24 03:07:21 C 08 32 35.977 +26 22 37.56 V I52
2025-04-24 03:07:41 C 08 32 35.999 +26 22 32.77 V I52
2025-04-25 03:06:53 C 08 35 15.734 +21 21 11.99 V I52
2025-04-25 03:07:12 C 08 35 15.770 +21 21 08.53 V I52
2025-04-25 03:07:32 C 08 35 15.788 +21 21 04.10 V I52
2025-04-25 03:07:53 C 08 35 15.799 +21 20 59.93 V I52
2025-04-26 03:07:32 C 08 37 33.517 +16 45 00.00 V I52
2025-04-26 03:07:52 C 08 37 33.539 +16 44 56.08 V I52
2025-04-26 03:45:07 C 08 37 35.972 +16 38 06.36 V I52
2025-04-26 19:53:39 C 08 38 58.798 +13 46 45.30 X 033
2025-04-26 19:54:16 C 08 38 58.859 +13 46 38.90 X 033
2025-04-26 19:54:53 C 08 38 58.877 +13 46 32.60 X 033
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)