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
1998-04-30 09:09:38 c 15 31 18.42 -11 26 32.1 i 691
1998-04-30 09:41:29 c 15 31 15.97 -11 26 16.6 i 691
1998-04-30 10:13:19 c 15 31 13.50 -11 26 01.3 i 691
1998-05-01 01:37:11 C 15 30 04.23 -11 18 37.1 046
1998-05-01 01:40:07 C 15 30 03.80 -11 18 35.8 046
1998-05-01 01:42:42 C 15 30 03.76 -11 18 35.0 046
1998-05-01 01:45:19 C 15 30 03.63 -11 18 34.8 046
1998-05-01 09:35:48 c 15 29 28.32 -11 14 47.2 i 691
1998-05-01 09:41:52 c 15 29 27.89 -11 14 44.3 i 691
1998-05-01 09:47:42 c 15 29 27.39 -11 14 41.5 i 691
1998-05-02 07:19:43 c 15 27 50.85 -11 04 25.1 i 691
1998-05-02 07:28:48 c 15 27 50.17 -11 04 21.3 i 691
1998-05-02 07:37:48 c 15 27 49.46 -11 04 16.7 i 691
1998-05-04 08:58:31 C 15 24 08.27 -10 41 05.1 a 696
1998-05-04 09:01:05 C 15 24 08.07 -10 41 03.8 a 696
1998-05-04 09:03:41 C 15 24 07.88 -10 41 02.7 a 696
1998-05-04 10:24:13 c 15 24 01.76 -10 40 25.4 i 691
1998-05-04 10:29:46 c 15 24 01.38 -10 40 22.4 i 691
1998-05-04 10:35:24 c 15 24 00.90 -10 40 20.1 i 691
1998-05-17 06:17:58 c 15 02 29.49 -08 31 44.2 i 691
1998-05-17 06:25:45 c 15 02 28.98 -08 31 41.4 i 691
1998-05-17 06:34:32 c 15 02 28.40 -08 31 38.3 i 691
1998-05-29 05:51:49 C 14 46 30.65 -07 05 57.6 z 711
1998-05-29 06:10:39 C 14 46 29.67 -07 05 52.6 z 711
1998-05-30 04:55:37 C 14 45 27.21 -07 00 42.7 z 711
1998-05-30 05:14:32 C 14 45 26.43 -07 00 38.7 z 711
2000-03-27 03:05:48 C 03 50 10.03 +08 37 29.0 a 691
2000-03-27 03:05:48 C 03 50 10.06 +08 37 31.0 b 691
2000-03-27 03:31:55 C 03 50 17.69 +08 37 47.4 a 691
2000-03-27 03:31:55 C 03 50 17.75 +08 37 49.4 b 691
2000-03-27 03:58:33 C 03 50 25.62 +08 38 09.6 b 691
2000-03-27 03:58:36 C 03 50 25.62 +08 38 06.9 a 691
2000-04-04 02:58:27 C 04 49 57.61 +10 47 18.2 b 691
2000-04-04 03:09:11 C 04 50 01.11 +10 47 25.7 b 691
2000-04-04 03:20:32 C 04 50 04.83 +10 47 32.6 b 691
2000-05-31 03:52:39 C 10 35 23.43 +07 34 58.5 b 691
2000-05-31 04:00:38 C 10 35 24.52 +07 34 55.7 b 691
2003-06-24 05:37:38 C 16 45 21.09 -08 56 02.5 o 696
2003-06-24 05:44:35 C 16 45 20.69 -08 56 03.0 o 696
2004-08-17 09:51:28 C 04 44 26.04 +30 51 03.4 19.0 c 704
2004-08-17 10:07:45 C 04 44 32.07 +30 51 00.7 19.2 c 704
2004-08-17 10:22:28 C 04 44 37.60 +30 50 59.8 19.9 c 704
2004-08-17 10:37:20 C 04 44 43.11 +30 50 54.9 19.2 c 704
2004-08-17 10:53:59 C 04 44 49.29 +30 50 51.7 19.5 c 704
2005-04-30 09:07:45 C 16 19 38.67 -12 25 13.3 c 691
2005-04-30 09:33:31 C 16 19 37.04 -12 25 05.2 c 691
2005-04-30 09:59:10 C 16 19 35.48 -12 24 55.7 c 691
2005-05-10 07:51:58 C 16 04 16.14 -11 01 02.9 c 691
2005-05-10 08:17:28 C 16 04 14.38 -11 00 53.9 c 691
2005-05-10 08:43:16 C 16 04 12.63 -11 00 44.9 c 691