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
2025-06-29 05:38:51 C 13 12 38.308 +43 12 16.60 V 703
2025-06-29 21:23:15 C 13 12 55.085 +42 53 46.79 Z C23
2025-06-29 22:47:12 C 13 12 56.335 +42 52 12.54 V R17
2025-06-29 23:06:56 C 13 12 56.623 +42 51 48.89 V R17
2025-06-29 23:10:01 C 13 12 56.786 +42 51 39.10 Z C23
2025-06-29 23:26:41 C 13 12 56.916 +42 51 25.16 V R17
2025-06-29 23:46:25 C 13 12 57.218 +42 51 01.51 V R17
2025-06-30 21:30:16 C 13 13 21.499 +42 25 27.34 Z C23
2025-06-30 22:55:04 C 13 13 22.982 +42 23 46.18 Z C23
2025-07-01 21:00:43 C 13 13 48.38 +41 57 47.5 X D04
2025-07-01 21:03:12 C 13 13 48.46 +41 57 44.2 X D04
2025-07-01 21:05:43 C 13 13 48.52 +41 57 41.8 X D04
2025-07-01 21:08:13 C 13 13 48.59 +41 57 38.8 X D04
2025-07-01 21:10:42 C 13 13 48.64 +41 57 36.1 X D04
2025-07-01 21:13:13 C 13 13 48.59 +41 57 32.7 X D04
2025-07-01 21:15:42 C 13 13 48.74 +41 57 29.8 X D04
2025-07-01 21:18:12 C 13 13 48.72 +41 57 26.0 X D04
2025-07-01 21:20:36 C 13 13 48.77 +41 57 23.8 X D04
2025-07-01 21:25:11 C 13 13 48.85 +41 57 18.4 X D04
2025-07-01 21:27:28 C 13 13 48.91 +41 57 15.3 X D04
2025-07-01 21:33:27 C 13 13 49.318 +41 57 10.58 Z C23
2025-07-01 22:33:35 C 13 13 50.376 +41 55 58.40 Z C23
2025-07-02 18:22:52 C 13 14 14.53 +41 32 40.7 X C40
2025-07-02 18:25:17 C 13 14 14.58 +41 32 37.9 X C40
2025-07-02 18:27:40 C 13 14 14.62 +41 32 35.0 X C40
2025-07-02 18:30:06 C 13 14 14.66 +41 32 32.0 X C40
2025-07-02 18:32:30 C 13 14 14.71 +41 32 29.2 X C40
2025-07-02 18:34:55 C 13 14 14.75 +41 32 26.3 X C40
2025-07-02 18:37:20 C 13 14 14.79 +41 32 23.4 X C40
2025-07-02 18:39:43 C 13 14 14.84 +41 32 20.5 X C40
2025-07-02 18:42:02 C 13 14 14.88 +41 32 17.8 X C40
2025-07-02 18:44:15 C 13 14 14.91 +41 32 15.1 X C40
2025-07-02 18:46:27 C 13 14 14.96 +41 32 12.5 X C40
2025-07-02 18:48:39 C 13 14 14.99 +41 32 09.9 X C40
2025-07-02 19:43:02 C 13 14 16.02 +41 31 05.2 X D04
2025-07-02 19:47:55 C 13 14 16.06 +41 30 58.5 X D04
2025-07-02 19:52:47 C 13 14 16.16 +41 30 52.7 X D04
2025-07-02 19:57:40 C 13 14 16.20 +41 30 46.7 X D04
2025-07-02 20:02:17 C 13 14 16.33 +41 30 41.9 X D04
2025-07-02 20:06:37 C 13 14 16.44 +41 30 36.3 X D04
2025-07-02 20:10:57 C 13 14 16.54 +41 30 31.3 X D04
2025-07-02 20:15:17 C 13 14 16.60 +41 30 25.6 X D04
2025-07-02 20:19:37 C 13 14 16.71 +41 30 20.7 X D04
2025-07-02 20:23:58 C 13 14 16.75 +41 30 15.3 X D04
2025-07-02 20:28:18 C 13 14 16.81 +41 30 10.1 X D04
2025-07-02 20:32:38 C 13 14 16.93 +41 30 04.9 X D04
2025-07-03 02:54:55 B 13 14 24.984 +41 22 34.68 W X04
2025-07-03 03:18:11 B 13 14 25.409 +41 22 06.92 W X04
2025-07-03 03:32:19 B 13 14 25.714 +41 21 49.72 W X04
2025-07-03 06:38:21 C 13 14 29.822 +41 18 19.01 V T05
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)