137170 — IAA Minor Planet Database

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 Period	0.74134738 yr ± 9.38e-11

Physical Parameters

H (abs. magnitude)	14.66
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-05-31
RMS Residual	0.179″
Uncertainty	0
Orbit Type	Aten
MOID	0.173761 AU
Observations Used	8344
Radar Obs Used	1
Gaia Obs Used	16
Oppositions	6
Arc Total	1999-2017
First Observation Used	1999-04-20
Last Observation Used	2025-08-18

Observations (8901)

Date	Type	RA	Dec	Mag	Band	Observatory
2011-03-11 02:14:19	C	18 00 31.07	+09 26 55.1	–	u	160
2011-03-11 02:17:26	C	18 00 31.30	+09 26 59.7	–	u	160
2011-03-11 02:20:32	C	18 00 31.51	+09 27 04.3	–	u	160
2011-03-24 00:26:18	C	18 22 10.78	+17 19 16.2	–	u	160
2011-03-24 00:28:31	C	18 22 10.89	+17 19 19.7	–	u	160
2011-03-24 00:30:49	C	18 22 11.02	+17 19 23.5	–	u	160
2011-03-25 02:49:05	C	18 23 52.84	+18 00 52.3	–	u	160
2011-03-25 02:51:23	C	18 23 52.98	+18 00 55.9	–	u	160
2011-03-25 02:53:40	C	18 23 53.13	+18 00 59.5	–	u	160
2011-03-31 00:28:03	C	18 32 36.67	+21 47 57.8	–	r	585
2011-03-31 00:30:19	C	18 32 36.80	+21 48 01.3	–	r	585
2011-03-31 00:42:27	C	18 32 37.50	+21 48 20.9	–	r	585
2011-03-31 00:46:28	C	18 32 37.72	+21 48 28.0	–	r	585
2011-03-31 00:56:36	C	18 32 38.30	+21 48 44.4	–	r	585
2011-03-31 01:20:58	C	18 32 39.69	+21 49 24.3	–	r	585
2011-03-31 01:37:05	C	18 32 40.59	+21 49 50.4	–	r	585
2011-03-31 01:43:09	C	18 32 40.96	+21 50 00.3	–	r	585
2011-03-31 01:47:13	C	18 32 41.18	+21 50 07.4	–	r	585
2011-03-31 01:53:17	C	18 32 41.50	+21 50 17.0	–	r	585
2011-03-31 01:55:18	C	18 32 41.64	+21 50 20.3	–	r	585
2011-03-31 02:09:27	C	18 32 42.44	+21 50 43.8	–	r	585
2011-03-31 02:11:29	C	18 32 42.55	+21 50 46.8	–	r	585
2011-03-31 02:13:29	C	18 32 42.66	+21 50 50.2	–	r	585
2011-03-31 02:15:31	C	18 32 42.79	+21 50 53.3	–	r	585
2011-03-31 02:17:32	C	18 32 42.90	+21 50 56.6	–	r	585
2011-03-31 02:19:33	C	18 32 43.01	+21 51 00.2	–	r	585
2011-03-31 02:21:33	C	18 32 43.13	+21 51 03.1	–	r	585
2011-03-31 02:23:35	C	18 32 43.22	+21 51 05.9	–	r	585
2011-03-31 02:25:35	C	18 32 43.35	+21 51 09.6	–	r	585
2011-03-31 02:27:37	C	18 32 43.46	+21 51 13.4	–	r	585
2011-03-31 02:31:39	C	18 32 43.69	+21 51 19.8	–	r	585
2011-04-07 20:57:00	C	18 42 59.05	+26 59 29.9	–	r	168
2011-04-07 21:01:00	C	18 42 59.26	+26 59 36.7	–	r	168
2011-04-07 22:14:06	C	18 43 02.87	+27 01 41.3	–	r	168
2011-04-07 22:50:30	C	18 43 04.68	+27 02 41.9	–	r	168
2011-04-07 22:55:20	C	18 43 04.91	+27 02 49.8	–	r	168
2011-04-08 09:48:48	C	18 43 38.18	+27 21 13.1	15.9	c	704
2011-04-08 10:05:39	C	18 43 39.00	+27 21 41.7	16.2	c	704
2011-04-08 10:22:31	C	18 43 39.77	+27 22 10.2	16.2	c	704
2011-04-08 10:39:21	C	18 43 40.55	+27 22 38.7	16.5	c	704
2011-04-08 10:56:13	C	18 43 41.32	+27 23 06.6	16.9	c	704
2011-04-09 00:47:59	C	18 44 23.34	+27 46 21.9	–	w	J52
2011-04-09 01:02:19	C	18 44 23.96	+27 46 47.2	–	w	J52
2011-04-09 01:05:12	C	18 44 24.08	+27 46 52.3	–	w	J52
2011-04-15 10:03:38	C	18 51 25.46	+32 07 23.6	–	v	H15
2011-04-15 10:37:12	C	18 51 26.74	+32 08 21.5	–	v	H15
2011-04-15 10:57:00	C	18 51 27.50	+32 08 55.8	–	v	H15
2011-04-16 07:20:01	C	18 52 18.90	+32 43 55.3	–	v	H15
2011-04-16 08:15:02	C	18 52 21.07	+32 45 31.7	–	v	H15
2011-04-16 09:21:46	C	18 52 23.62	+32 47 28.1	–	v	H15

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137170 (1999 HF1)