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
2005-05-14 06:02:13 C 15 58 00.53 -10 29 32.9 c 691
2005-05-14 06:27:10 C 15 57 58.81 -10 29 24.7 c 691
2005-05-14 06:52:16 C 15 57 57.10 -10 29 16.6 c 691
2005-05-17 07:50:33 C 15 53 07.51 -10 05 59.3 r G96
2005-05-17 07:58:21 C 15 53 06.98 -10 05 56.8 r G96
2005-05-17 08:06:07 C 15 53 06.48 -10 05 54.7 r G96
2005-05-17 08:14:01 C 15 53 05.94 -10 05 51.9 r G96
2005-05-20 07:29:33 C 15 48 27.75 -09 44 14.9 r G96
2005-05-20 07:39:05 C 15 48 27.10 -09 44 12.3 r G96
2005-05-20 07:48:36 C 15 48 26.49 -09 44 09.4 r G96
2005-05-20 07:58:04 C 15 48 25.84 -09 44 06.6 r G96
2005-06-05 03:59:15 C 15 26 24.34 -08 13 05.5 c 691
2005-06-05 04:24:20 C 15 26 23.04 -08 13 01.5 c 691
2005-06-05 04:49:35 C 15 26 21.72 -08 12 56.6 c 691
2005-06-13 03:52:23 C 15 17 50.98 -07 45 12.8 c 691
2005-06-13 04:03:08 C 15 17 50.54 -07 45 11.7 c 691
2005-06-13 04:17:28 C 15 17 49.95 -07 45 10.1 c 691
2005-06-13 04:28:12 C 15 17 49.50 -07 45 08.4 c 691
2005-06-13 04:42:33 C 15 17 48.92 -07 45 07.3 c 691
2005-06-13 04:53:17 C 15 17 48.50 -07 45 06.3 c 691
2006-05-27 09:09:14 C 20 41 43.40 -03 21 33.9 c 691
2006-05-27 09:39:14 C 20 41 43.55 -03 21 24.0 c 691
2006-05-27 10:04:13 C 20 41 43.60 -03 21 16.4 c 691
2006-06-01 10:33:10 C 20 41 41.12 -02 46 53.6 c 691
2006-06-01 10:58:09 C 20 41 41.02 -02 46 47.3 c 691
2007-03-13 11:03:29 C 07 06 55.54 -71 29 42.0 r 423
2007-03-13 11:14:45 C 07 07 25.33 -71 28 40.1 r 423
2007-03-13 11:26:00 C 07 07 55.10 -71 27 37.7 r 423
2007-03-13 11:37:14 C 07 08 24.81 -71 26 34.8 r 423
2007-03-13 11:48:29 C 07 08 54.44 -71 25 31.6 r 423
2007-03-13 11:59:45 C 07 09 24.12 -71 24 28.0 r 423
2007-03-13 12:11:00 C 07 09 53.69 -71 23 23.7 r 423
2007-03-13 12:33:29 C 07 10 52.86 -71 21 14.4 r 423
2007-03-13 12:43:37 C 07 11 19.40 -71 20 15.7 r 423
2007-03-14 13:03:51 C 08 08 32.30 -68 25 41.3 r 423
2007-03-14 13:15:06 C 08 08 54.63 -68 24 03.8 r 423
2007-03-14 13:26:22 C 08 09 16.94 -68 22 25.8 r 423
2007-03-14 13:37:37 C 08 09 39.25 -68 20 47.8 r 423
2007-03-14 13:48:51 C 08 10 01.47 -68 19 09.3 r 423
2007-03-14 14:00:06 C 08 10 23.69 -68 17 30.5 r 423
2007-03-14 14:09:29 C 08 10 42.19 -68 16 08.0 r 423
2007-03-20 03:22:26 C 10 19 56.69 -45 10 19.5 834
2007-03-20 03:41:25 C 10 20 04.34 -45 07 12.4 834
2007-03-20 03:52:12 C 10 20 08.66 -45 05 26.3 834
2007-03-21 01:50:26 C 10 28 38.55 -41 37 05.8 834
2007-03-21 02:14:53 C 10 28 46.59 -41 33 22.1 834
2007-03-21 02:41:13 C 10 28 55.18 -41 29 21.0 834
2007-03-23 12:51:52 C 10 45 13.82 -33 27 20.5 r E12
2007-03-23 13:05:07 C 10 45 16.59 -33 25 41.6 r E12
2007-03-23 13:18:01 C 10 45 19.26 -33 24 05.7 r E12