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
2002-06-03 12:32:19 C 12 39 59.47 +51 34 23.8 c 379
2002-06-20 03:56:46 C 12 50 29.55 +43 59 44.4 16.2 c 704
2002-06-20 04:15:55 C 12 50 30.15 +43 59 22.3 16.5 c 704
2002-06-20 04:35:17 C 12 50 30.76 +43 59 00.7 16.7 c 704
2002-06-20 04:55:11 C 12 50 31.41 +43 58 37.6 16.7 c 704
2002-06-20 05:14:36 C 12 50 32.07 +43 58 15.5 16.6 c 704
2002-06-21 23:20:10 C 12 52 02.23 +43 10 41.5 15.9 939
2002-06-21 23:28:34 C 12 52 02.47 +43 10 32.0 15.9 939
2002-06-21 23:37:02 C 12 52 02.73 +43 10 22.4 15.9 939
2002-06-22 20:55:19 C 12 52 50.03 +42 46 20.8 c 198
2002-06-22 21:04:44 C 12 52 50.34 +42 46 10.3 c 198
2002-06-22 21:11:00 C 12 52 50.56 +42 46 03.1 c 198
2002-06-22 22:19:31 C 12 52 52.94 +42 44 47.3 15.8 939
2002-06-22 22:26:32 C 12 52 53.17 +42 44 38.9 941
2002-06-22 22:28:03 C 12 52 53.25 +42 44 38.0 15.8 939
2002-06-22 22:29:43 C 12 52 53.28 +42 44 36.0 941
2002-06-22 22:32:40 C 12 52 53.41 +42 44 32.5 941
2002-06-22 22:35:43 C 12 52 53.54 +42 44 28.4 941
2002-06-22 22:36:39 C 12 52 53.59 +42 44 28.5 15.8 939
2002-06-22 22:38:52 C 12 52 53.68 +42 44 24.9 941
2002-06-22 22:41:46 C 12 52 53.75 +42 44 21.9 941
2002-06-22 22:49:35 C 12 52 53.61 +42 44 17.5 232
2002-06-22 22:51:54 C 12 52 53.72 +42 44 15.0 232
2002-06-22 22:54:12 C 12 52 53.89 +42 44 12.8 232
2002-06-22 22:56:33 C 12 52 53.98 +42 44 09.6 232
2002-06-30 04:00:27 C 12 59 44.39 +39 29 01.6 16.1 c 704
2002-06-30 04:19:28 C 12 59 45.11 +39 28 39.6 16.3 c 704
2002-06-30 04:38:32 C 12 59 45.87 +39 28 18.0 16.2 c 704
2002-06-30 04:57:38 C 12 59 46.60 +39 27 56.0 16.1 c 704
2002-06-30 05:16:44 C 12 59 47.40 +39 27 33.9 16.2 c 704
2002-07-01 04:33:13 C 13 00 45.99 +39 01 18.1 15.5 c 704
2002-07-01 04:49:34 C 13 00 46.63 +39 00 59.2 c 704
2002-07-01 05:05:47 C 13 00 47.28 +39 00 40.7 15.1 c 704
2002-07-01 05:21:51 C 13 00 47.93 +39 00 22.2 15.0 c 704
2002-07-01 05:37:47 C 13 00 48.59 +39 00 03.8 15.1 c 704
2002-07-02 04:28:59 C 13 01 46.96 +38 34 15.9 15.6 c 704
2002-07-02 04:44:14 C 13 01 47.57 +38 33 58.3 15.8 c 704
2002-07-02 04:59:29 C 13 01 48.19 +38 33 40.9 15.9 c 704
2002-07-02 05:14:39 C 13 01 48.80 +38 33 23.4 15.6 c 704
2002-07-02 05:29:47 C 13 01 49.43 +38 33 05.9 15.6 c 704
2002-07-03 21:29:31 C 13 03 33.07 +37 47 51.9 16.4 939
2002-07-03 21:37:48 C 13 03 33.41 +37 47 42.2 16.4 939
2002-07-03 21:46:09 C 13 03 33.75 +37 47 32.8 16.4 939
2002-07-07 21:13:39 C 13 07 48.50 +35 59 13.3 15.9 939
2002-07-07 21:21:59 C 13 07 48.87 +35 59 03.5 15.9 939
2002-07-07 21:30:17 C 13 07 49.24 +35 58 53.4 16.0 939
2002-07-10 20:41:58 C 13 11 05.60 +34 37 38.8 c 198
2002-07-10 20:57:22 C 13 11 06.27 +34 37 21.3 c 198
2002-07-10 21:06:26 C 13 11 06.64 +34 37 10.7 c 198
2002-07-10 21:10:03 C 13 11 06.79 +34 37 06.6 c 198
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)