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
2007-05-22 04:19:43 C 12 10 23.05 +01 14 33.7 r 703
2007-05-22 04:22:03 C 12 10 23.19 +01 14 33.5 r G96
2007-05-22 04:26:04 C 12 10 23.37 +01 14 32.5 r 703
2007-05-22 04:32:58 C 12 10 23.66 +01 14 32.7 r G96
2007-05-22 04:43:59 C 12 10 24.13 +01 14 32.9 r G96
2012-05-30 06:37:08 C 16 12 33.55 -09 31 56.3 r G96
2012-05-30 06:53:49 C 16 12 32.54 -09 31 53.2 r G96
2012-05-30 07:02:05 C 16 12 32.04 -09 31 51.2 r G96
2012-06-13 04:39:50 C 15 54 23.27 -08 37 25.5 o 691
2012-06-13 05:37:03 C 15 54 20.47 -08 37 18.5 o 691
2012-06-13 06:34:18 C 15 54 17.65 -08 37 11.9 o 691
2012-06-16 04:04:22 C 15 51 04.33 -08 29 40.6 o 691
2012-06-16 05:12:49 C 15 51 01.11 -08 29 34.2 o 691
2012-06-18 04:04:54 C 15 48 58.57 -08 25 18.1 o 691
2012-06-18 04:44:06 C 15 48 56.82 -08 25 14.5 o 691
2012-06-18 05:18:18 C 15 48 55.39 -08 25 12.1 o 691
2013-06-18 07:51:29 C 21 24 29.48 +02 08 36.6 u G96
2013-06-18 08:04:26 C 21 24 29.41 +02 08 41.7 u G96
2013-06-18 08:17:30 C 21 24 29.37 +02 08 47.0 u G96
2013-06-18 08:30:59 C 21 24 29.34 +02 08 51.2 u G96
2013-07-16 12:31:20 C 21 07 42.943 +05 14 22.76 L F51
2013-07-16 12:55:53 C 21 07 41.666 +05 14 26.70 L F51
2013-07-16 13:16:12 C 21 07 40.608 +05 14 29.95 L F51
2013-07-16 13:39:31 C 21 07 39.393 +05 14 33.64 L F51
2013-07-31 20:55:56 C 20 44 03.98 +05 34 42.0 q C95
2013-07-31 21:03:14 C 20 44 03.39 +05 34 42.6 q C95
2013-07-31 21:09:37 C 20 44 02.89 +05 34 42.2 q C95
2013-07-31 21:15:41 C 20 44 02.41 +05 34 42.2 q C95
2013-08-20 03:57:38 C 20 03 39.84 +03 39 24.1 u 807
2013-08-20 04:04:22 C 20 03 39.23 +03 39 21.1 u 807
2013-08-20 04:11:04 C 20 03 38.61 +03 39 18.2 u 807
2013-08-29 03:31:47 C 19 44 50.79 +01 51 51.4 r Y00
2013-08-29 03:36:59 C 19 44 50.33 +01 51 46.7 r Y00
2013-08-29 03:42:57 C 19 44 49.82 +01 51 43.9 r Y00
2013-08-30 02:51:40 C 19 42 56.35 +01 38 36.8 r Y00
2013-08-30 02:58:04 C 19 42 55.73 +01 38 32.7 r Y00
2013-08-30 03:03:48 C 19 42 55.20 +01 38 30.1 r Y00
2014-02-25 09:09:24 S 15 59 16.447 -26 56 20.15 L C51
2014-02-25 09:09:35 S 15 59 16.320 -26 56 20.65 L C51
2014-02-25 20:13:22 S 15 59 08.275 -26 50 56.69 L C51
2014-02-25 21:48:10 S 15 59 07.020 -26 50 07.04 L C51
2014-02-25 23:22:58 S 15 59 05.671 -26 49 22.30 L C51
2014-02-26 05:42:22 S 15 59 00.557 -26 46 15.02 L C51
2014-03-12 10:02:21 C 15 48 27.35 -23 37 44.9 o 926
2014-03-12 10:28:33 C 15 48 25.98 -23 37 28.5 o 926
2014-03-12 10:55:04 C 15 48 24.61 -23 37 12.3 o 926
2014-03-28 14:07:54 C 15 21 53.617 -18 57 39.88 L F51
2014-03-28 14:23:09 C 15 21 52.256 -18 57 27.41 L F51
2014-03-28 14:38:22 C 15 21 50.897 -18 57 15.01 L F51
2014-03-28 14:53:34 C 15 21 49.536 -18 57 02.52 L F51