136900 (1998 HL49)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6367117241 ± 8.56e-09
Semi-major axis (a)1.7474083419 AU ± 7.92e-10
Inclination (i)10.97962249° ± 1.81e-06
Long. of Asc. Node (Ω)205.93934994° ± 7.13e-06
Arg. of Perihelion (ω)239.26481064° ± 7.17e-06
Mean Anomaly (M)58.90437048° ± 2.72e-06
Mean Motion (n)0.4266980608°/day ± 2.90e-10
Perihelion dist (q)0.63481296 AU ± 1.50e-08
Aphelion dist (Q)2.86000372 AU ± 1.50e-08
Orbital Period2.30989164 yr ± 1.57e-09
Physical Parameters
H (abs. magnitude)17.39
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.235″
Uncertainty0
Orbit TypeApollo
MOID0.084573 AU
Observations Used833
Oppositions14
Arc Total1998-2023
First Observation Used1998-04-30
Last Observation Used2023-06-07
Observations (895)
Date Type RA Dec Mag Band Observatory
2020-09-08 19:10:55 C 20 27 57.73 +13 49 40.0 V 089
2020-09-08 19:17:51 C 20 27 56.49 +13 49 35.1 V 089
2020-09-08 20:13:44 C 20 27 46.61 +13 48 57.0 V L54
2020-09-08 20:29:54 C 20 27 44.23 +13 48 45.1 V Z43
2020-09-08 20:46:19 C 20 27 41.31 +13 48 33.1 V Z43
2020-09-08 21:26:34 C 20 27 33.49 +13 48 06.0 V L54
2020-09-08 21:34:34 C 20 27 32.58 +13 47 59.7 V Z43
2020-09-08 21:44:31 C 20 27 30.78 +13 47 53.0 V Z43
2020-09-08 22:17:28 C 20 27 24.86 +13 47 30.1 V Z43
2020-09-08 22:39:22 C 20 27 20.43 +13 47 14.8 V L54
2020-09-09 07:43:54 C 20 25 45.48 +13 41 01.8 V T08
2020-09-09 07:48:34 C 20 25 44.63 +13 40 58.3 V T08
2020-09-09 07:56:37 C 20 25 43.14 +13 40 52.5 V T08
2020-09-09 08:16:26 C 20 25 39.50 +13 40 38.2 V T08
2020-09-09 20:30:55 C 20 23 29.48 +13 31 29.0 V 160
2020-09-09 20:32:51 C 20 23 29.12 +13 31 27.6 V 160
2020-09-09 20:34:46 C 20 23 28.77 +13 31 26.1 V 160
2020-09-09 21:58:52 C 20 23 13.11 +13 30 21.9 V L54
2020-09-09 22:35:53 C 20 23 06.31 +13 29 53.3 V L54
2020-09-09 23:14:06 C 20 22 59.33 +13 29 23.8 V L54
2020-09-10 04:08:45 C 20 22 08.00 +13 25 40.5 q U55
2020-09-10 04:13:26 C 20 22 07.14 +13 25 37.0 q U55
2020-09-10 04:18:18 C 20 22 06.23 +13 25 33.4 q U55
2020-09-10 18:33:49 C 20 19 31.74 +13 14 24.4 V 089
2020-09-10 18:37:16 C 20 19 31.13 +13 14 22.0 V 089
2020-09-10 18:40:44 C 20 19 30.47 +13 14 19.2 V 089
2020-09-10 18:51:08 C 20 19 28.52 +13 14 10.3 V 089
2020-09-10 18:54:36 C 20 19 27.86 +13 14 08.4 V 089
2020-09-10 19:01:32 C 20 19 26.55 +13 14 02.6 V 089
2020-09-10 19:20:34 C 20 19 23.47 +13 13 51.3 V L54
2020-09-10 20:54:25 C 20 19 05.66 +13 12 32.6 V L54
2020-09-10 22:28:17 C 20 18 48.16 +13 11 16.0 V L54
2020-09-11 08:06:55 C 20 17 03.10 +13 03 33.9 V T05
2020-09-11 08:10:59 C 20 17 02.33 +13 03 30.5 V T05
2020-09-11 08:18:56 C 20 17 00.82 +13 03 23.9 V T05
2020-09-11 08:19:35 C 20 17 00.68 +13 03 23.5 V T05
2020-09-11 08:24:12 C 20 16 59.82 +13 03 19.7 V T05
2020-09-11 08:33:18 C 20 16 58.08 +13 03 11.9 V T05
2020-09-11 22:17:12 C 20 14 26.14 +12 51 22.6 V L63
2020-09-11 22:39:49 C 20 14 21.84 +12 51 02.8 V L63
2020-09-11 23:02:47 C 20 14 17.49 +12 50 42.7 V L63
2020-09-12 14:39:33 C 20 11 24.42 +12 37 00.1 u N31
2020-09-12 14:50:04 C 20 11 22.36 +12 36 50.3 u N31
2020-09-12 15:00:37 C 20 11 20.33 +12 36 41.2 u N31
2020-09-12 15:11:23 C 20 11 18.21 +12 36 31.3 u N31
2020-09-12 21:03:44 C 20 10 11.39 +12 31 04.1 V L63
2020-09-12 21:31:38 C 20 10 05.97 +12 30 38.9 V L63
2020-09-12 22:00:07 C 20 10 00.45 +12 30 11.5 V L63
2020-09-13 08:12:05 C 20 08 04.95 +12 20 52.2 V T08
2020-09-13 08:16:43 C 20 08 04.03 +12 20 47.7 V T08