IAA RAS IAA Minor Planet Database

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
2020-09-04 20:44:31 C 20 43 48.60 +14 45 03.0 – V 160
2020-09-04 22:06:21 C 20 43 35.02 +14 44 22.9 – V L63
2020-09-04 22:16:31 C 20 43 33.31 +14 44 17.8 – V L63
2020-09-04 22:26:47 C 20 43 31.59 +14 44 12.8 – V L63
2020-09-05 02:59:36 C 20 42 48.29 +14 41 59.4 – V V93
2020-09-05 04:02:24 C 20 42 37.77 +14 41 28.0 – V V93
2020-09-05 05:11:13 C 20 42 26.23 +14 40 53.2 – V V93
2020-09-05 09:11:04 C 20 41 47.32 +14 39 00.4 – V T08
2020-09-05 09:15:05 C 20 41 46.64 +14 38 58.1 – V T08
2020-09-05 09:28:37 C 20 41 44.36 +14 38 50.9 – V T08
2020-09-05 09:46:18 C 20 41 41.38 +14 38 42.1 – V T08
2020-09-05 20:26:28 C 20 39 57.25 +14 32 56.5 – V L54
2020-09-05 21:04:59 C 20 39 51.24 +14 32 34.8 – V Z43
2020-09-05 21:24:51 C 20 39 47.88 +14 32 24.2 – V Z43
2020-09-05 21:26:58 C 20 39 47.49 +14 32 21.8 – V Z80
2020-09-05 21:28:19 C 20 39 47.26 +14 32 21.2 – V Z80
2020-09-05 21:41:44 C 20 39 44.72 +14 32 15.6 – V A16
2020-09-05 21:45:32 C 20 39 44.38 +14 32 13.2 – V Z43
2020-09-05 21:57:03 C 20 39 42.14 +14 32 07.1 – V A16
2020-09-05 21:57:34 C 20 39 41.82 +14 32 07.1 – V L54
2020-09-05 22:00:34 C 20 39 41.52 +14 32 06.7 – V L63
2020-09-05 22:19:07 C 20 39 38.36 +14 31 56.5 – V L63
2020-09-05 22:20:11 C 20 39 38.23 +14 31 54.8 – V A16
2020-09-05 22:30:50 C 20 39 36.41 +14 31 48.9 – V A16
2020-09-05 22:32:47 C 20 39 36.10 +14 31 48.8 – V 160
2020-09-05 22:35:39 C 20 39 35.57 +14 31 47.3 – V 160
2020-09-05 22:37:35 C 20 39 35.24 +14 31 46.5 – V L63
2020-09-05 22:38:33 C 20 39 35.09 +14 31 45.5 – V 160
2020-09-05 23:28:03 C 20 39 26.55 +14 31 17.5 – V L54
2020-09-06 09:22:53 C 20 37 48.44 +14 26 00.1 – V T05
2020-09-06 09:37:29 C 20 37 45.92 +14 25 51.7 – V T05
2020-09-06 10:05:29 C 20 37 41.09 +14 25 35.6 – V T05
2020-09-06 20:38:35 C 20 35 56.43 +14 19 22.0 – a 233
2020-09-06 20:46:01 C 20 35 54.87 +14 19 18.3 – a 233
2020-09-06 20:50:04 C 20 35 54.20 +14 19 15.4 – a 233
2020-09-06 21:05:37 C 20 35 51.49 +14 19 06.6 – V 160
2020-09-06 21:08:34 C 20 35 50.97 +14 19 04.9 – V 160
2020-09-06 21:11:29 C 20 35 50.47 +14 19 03.0 – V 160
2020-09-06 22:15:56 C 20 35 39.07 +14 18 23.7 – V L54
2020-09-06 23:03:28 C 20 35 30.88 +14 17 55.3 – V L54
2020-09-06 23:52:11 C 20 35 22.53 +14 17 25.8 – V L54
2020-09-07 20:17:27 C 20 31 55.61 +14 04 50.4 – V G33
2020-09-07 20:19:09 C 20 31 55.30 +14 04 49.5 – V G33
2020-09-07 20:20:49 C 20 31 55.00 +14 04 48.4 – V G33
2020-09-08 05:19:44 C 20 30 22.17 +13 58 59.7 – q U55
2020-09-08 05:23:21 C 20 30 21.52 +13 58 57.4 – q U55
2020-09-08 05:26:58 C 20 30 20.88 +13 58 54.9 – q U55
2020-09-08 18:50:07 C 20 28 01.47 +13 49 54.1 – V 089
2020-09-08 18:53:35 C 20 28 00.86 +13 49 52.1 – V 089
2020-09-08 19:03:59 C 20 27 58.98 +13 49 44.5 – V 089