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
2025-04-26 19:56:55 C 08 38 59.039 +13 46 12.19 X 033
2025-04-26 19:57:28 C 08 38 59.078 +13 46 06.10 X 033
2025-04-27 03:05:23 C 08 39 33.707 +12 34 40.26 V I52
2025-04-27 03:05:46 C 08 39 33.786 +12 34 36.73 V I52
2025-04-27 03:06:09 C 08 39 33.790 +12 34 32.45 V I52
2025-04-27 03:06:31 C 08 39 33.786 +12 34 28.70 V I52
2025-04-27 20:02:24 C 08 40 49.717 +09 51 52.30 X 033
2025-04-27 20:03:49 C 08 40 49.786 +09 51 39.10 X 033
2025-04-27 20:05:21 C 08 40 49.865 +09 51 24.90 X 033
2025-04-28 03:15:40 C 08 41 20.720 +08 46 39.79 V I52
2025-04-28 03:16:54 C 08 41 20.785 +08 46 29.10 V I52
2025-04-28 03:18:09 C 08 41 20.828 +08 46 17.76 V I52
2025-04-28 03:19:24 C 08 41 20.893 +08 46 06.53 V I52
2025-04-28 19:48:23 C 08 42 27.338 +06 23 29.80 X 033
2025-04-28 19:49:16 C 08 42 27.378 +06 23 22.30 X 033
2025-04-28 19:50:09 C 08 42 27.428 +06 23 14.90 X 033
2025-04-28 19:51:02 C 08 42 27.468 +06 23 07.60 X 033
2025-04-29 03:11:11 C 08 42 55.685 +05 23 27.17 V I52
2025-04-29 03:11:42 C 08 42 55.739 +05 23 23.42 V I52
2025-04-29 03:12:14 C 08 42 55.768 +05 23 19.21 V I52
2025-04-29 03:12:46 C 08 42 55.800 +05 23 14.96 V I52
2025-04-29 19:53:44 C 08 43 56.237 +03 13 22.30 X 033
2025-04-29 19:54:38 C 08 43 56.287 +03 13 15.39 X 033
2025-04-29 19:55:31 C 08 43 56.327 +03 13 08.80 X 033
2025-04-29 19:56:23 C 08 43 56.356 +03 13 02.29 X 033
2025-04-30 03:18:54 C 08 44 21.995 +02 19 05.48 V I52
2025-04-30 03:19:35 C 08 44 22.006 +02 19 00.30 V I52
2025-04-30 03:20:18 C 08 44 22.049 +02 18 55.48 V I52
2025-04-30 03:21:00 C 08 44 22.088 +02 18 50.08 V I52
2025-04-30 20:08:00 C 08 45 17.399 +00 21 20.70 X 033
2025-04-30 20:09:55 C 08 45 17.467 +00 21 07.60 X 033
2025-04-30 20:12:05 C 08 45 17.557 +00 20 53.00 X 033
2025-05-09 03:17:43 C 08 53 20.144 -14 56 23.24 V I52
2025-05-09 03:24:23 C 08 53 20.281 -14 56 42.97 V I52
2025-05-09 03:31:03 C 08 53 20.389 -14 57 04.14 V I52
2025-05-10 03:20:49 C 08 54 04.864 -16 08 12.52 V I52
2025-05-10 03:32:03 C 08 54 05.108 -16 08 44.41 V I52
2025-05-10 03:43:17 C 08 54 05.320 -16 09 16.40 V I52
2025-05-10 03:54:32 C 08 54 05.476 -16 09 47.27 V I52
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)