137170 (1999 HF1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4625092333 ± 7.37e-09
Semi-major axis (a)0.8191205796 AU ± 6.91e-11
Inclination (i)25.65676684° ± 6.33e-07
Long. of Asc. Node (Ω)155.84265542° ± 1.66e-06
Arg. of Perihelion (ω)253.41802715° ± 1.46e-06
Mean Anomaly (M)60.85489352° ± 1.85e-06
Mean Motion (n)1.3295066693°/day ± 1.68e-10
Perihelion dist (q)0.44026975 AU ± 6.04e-09
Aphelion dist (Q)1.19797141 AU ± 6.04e-09
Orbital Period0.74134738 yr ± 9.38e-11
Physical Parameters
H (abs. magnitude)14.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.179″
Uncertainty0
Orbit TypeAten
MOID0.173761 AU
Observations Used8344
Radar Obs Used1
Gaia Obs Used16
Oppositions6
Arc Total1999-2017
First Observation Used1999-04-20
Last Observation Used2025-08-18
Observations (8901)
Date Type RA Dec Mag Band Observatory
2005-05-10 15:05:16 C 15 14 55.03 +63 44 22.3 o 379
2005-05-12 20:25:07 C 15 03 48.50 +63 35 17.7 o 084
2005-05-12 20:27:15 C 15 03 47.99 +63 35 18.5 o 084
2005-05-12 21:53:59 C 15 03 30.72 +63 34 58.9 c J71
2005-05-12 21:55:18 C 15 03 30.43 +63 34 58.4 c J71
2005-05-12 21:57:02 C 15 03 30.06 +63 34 58.5 c J71
2005-05-14 20:50:54 C 14 54 09.74 +63 21 33.4 o 084
2005-05-14 20:53:01 C 14 54 09.32 +63 21 33.0 o 084
2005-05-14 20:55:08 C 14 54 08.90 +63 21 32.2 o 084
2005-05-14 20:57:15 C 14 54 08.50 +63 21 31.5 o 084
2005-05-14 20:59:24 C 14 54 08.05 +63 21 30.7 o 084
2005-05-14 21:01:31 C 14 54 07.62 +63 21 30.0 o 084
2005-05-14 21:03:38 C 14 54 07.28 +63 21 29.4 o 084
2005-05-14 21:05:45 C 14 54 06.79 +63 21 28.5 o 084
2005-05-14 21:07:52 C 14 54 06.39 +63 21 27.7 o 084
2005-05-14 21:09:59 C 14 54 05.96 +63 21 27.0 o 084
2005-05-14 21:12:06 C 14 54 05.53 +63 21 26.3 o 084
2005-05-14 21:14:13 C 14 54 05.13 +63 21 25.8 o 084
2005-05-14 21:16:20 C 14 54 04.72 +63 21 24.9 o 084
2005-05-14 21:18:26 C 14 54 04.27 +63 21 24.3 o 084
2005-05-14 21:20:33 C 14 54 03.81 +63 21 23.7 o 084
2005-05-14 21:22:40 C 14 54 03.46 +63 21 22.7 o 084
2005-05-14 21:24:47 C 14 54 03.03 +63 21 22.3 o 084
2005-05-14 21:26:54 C 14 54 02.58 +63 21 21.3 o 084
2005-05-14 21:29:03 C 14 54 02.11 +63 21 20.7 o 084
2005-05-14 21:31:09 C 14 54 01.72 +63 21 20.0 o 084
2005-05-14 23:42:48 C 14 53 35.88 +63 20 36.6 o A32
2005-05-14 23:47:38 C 14 53 34.93 +63 20 35.0 o A32
2005-05-14 23:50:52 C 14 53 34.27 +63 20 33.8 o A32
2005-05-14 23:54:05 C 14 53 33.63 +63 20 32.4 o A32
2005-05-14 23:57:20 C 14 53 32.98 +63 20 31.5 o A32
2005-05-15 20:46:58 C 14 49 34.63 +63 12 54.4 o 084
2005-05-17 13:10:44 C 14 42 08.02 +62 55 51.7 o 379
2005-05-17 13:23:27 C 14 42 05.62 +62 55 45.3 o 379
2005-05-17 13:25:16 C 14 42 05.32 +62 55 44.7 o 379
2005-05-17 13:27:06 C 14 42 04.90 +62 55 44.1 o 379
2005-05-18 21:20:53 C 14 36 28.59 +62 39 55.1 c 127
2005-05-18 21:26:32 C 14 36 27.59 +62 39 52.3 c 127
2005-05-18 21:31:53 C 14 36 26.63 +62 39 49.5 c 127
2005-05-18 21:37:01 C 14 36 25.71 +62 39 47.0 c 127
2005-05-18 21:42:59 C 14 36 24.66 +62 39 44.0 c 127
2005-05-19 20:46:12 C 14 32 30.48 +62 27 13.0 o 084
2005-05-19 20:48:19 C 14 32 30.10 +62 27 11.5 o 084
2005-05-20 02:14:47 C 14 31 36.67 +62 24 10.4 c I06
2005-05-20 02:19:51 C 14 31 35.75 +62 24 08.2 c I06
2005-05-20 02:24:54 C 14 31 34.90 +62 24 05.3 c I06
2005-05-20 14:07:26 C 14 29 39.27 +62 17 20.8 o 379
2005-05-20 14:09:24 C 14 29 38.90 +62 17 19.5 o 379
2005-05-20 14:11:23 C 14 29 38.56 +62 17 18.7 o 379
2005-05-20 14:17:20 C 14 29 37.59 +62 17 15.1 o 379
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2022-03-19 21:40:00 186720536 10 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)