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
2020-09-18 21:03:27 C 19 41 44.43 +09 53 13.0 V L63
2020-09-22 06:27:06 C 19 24 29.48 +08 01 21.9 V T05
2020-09-22 06:31:44 C 19 24 28.44 +08 01 15.0 V T05
2020-09-22 06:39:07 C 19 24 26.76 +08 01 04.1 V T05
2020-09-22 06:56:16 C 19 24 22.87 +08 00 38.6 V T05
2020-09-22 20:17:37 S 19 21 28.138 +07 40 46.09 L C51
2020-09-22 20:17:48 S 19 21 28.109 +07 40 44.33 L C51
2020-09-22 21:51:52 S 19 21 07.418 +07 38 22.63 L C51
2020-09-23 16:58:54 C 19 16 54.41 +07 08 38.7 V 089
2020-09-23 17:02:20 C 19 16 53.66 +07 08 33.5 V 089
2020-09-23 17:05:45 C 19 16 52.87 +07 08 27.8 V 089
2020-09-23 17:09:10 C 19 16 52.10 +07 08 22.9 V 089
2020-09-23 17:12:35 C 19 16 51.32 +07 08 17.4 V 089
2020-09-23 17:16:00 C 19 16 50.53 +07 08 12.2 V 089
2020-09-23 17:19:25 C 19 16 49.74 +07 08 06.8 V 089
2020-09-27 19:04:13 C 18 54 20.54 +04 23 38.6 V L18
2020-09-27 19:06:43 C 18 54 19.98 +04 23 33.7 V L18
2020-09-27 19:09:39 C 18 54 19.20 +04 23 28.9 V L18
2020-09-28 07:10:41 C 18 51 26.40 +04 01 56.3 V T08
2020-09-28 07:16:39 C 18 51 24.91 +04 01 45.3 V T08
2020-09-28 07:30:07 C 18 51 21.55 +04 01 20.6 V T08
2020-09-28 07:49:23 C 18 51 16.80 +04 00 45.3 V T08
2020-10-01 01:11:48 C 18 35 09.95 +01 56 01.4 V V93
2020-10-01 02:08:38 C 18 34 55.09 +01 54 07.7 V V93
2020-10-01 02:42:57 C 18 34 46.19 +01 53 00.0 V V93
2020-10-03 00:30:16 C 18 22 55.08 +00 20 00.7 V W33
2020-10-03 00:40:37 C 18 22 52.27 +00 19 39.2 V W33
2020-10-03 00:50:58 C 18 22 49.45 +00 19 17.6 V W33
2020-10-04 05:32:12 C 18 15 08.04 -00 41 06.3 V T05
2020-10-04 05:36:50 C 18 15 06.75 -00 41 16.3 V T05
2020-10-04 05:54:45 C 18 15 01.70 -00 41 54.6 V T05
2020-10-07 18:19:06 C 17 51 07.57 -03 48 57.9 V 160
2020-10-07 18:22:14 C 17 51 06.60 -03 49 04.8 V 160
2020-10-07 18:25:24 C 17 51 05.65 -03 49 11.7 V 160
2020-10-08 05:39:28 C 17 47 45.02 -04 14 40.6 V T05
2020-10-08 05:44:47 C 17 47 43.35 -04 14 52.9 V T05
2020-10-08 05:53:21 C 17 47 40.73 -04 15 12.0 V T05
2020-10-08 06:07:56 C 17 47 36.26 -04 15 45.5 V T05
2020-10-16 02:13:35 C 16 45 54.62 -11 34 36.2 U I41
2020-10-16 02:27:10 C 16 45 49.69 -11 35 06.7 U I41
2020-10-16 02:33:57 C 16 45 47.23 -11 35 21.8 U I41
2020-10-16 02:40:44 C 16 45 44.77 -11 35 37.3 U I41
2021-01-15 15:20:47 C 15 16 59.13 -23 35 40.9 V T05
2021-01-15 15:28:12 C 15 16 59.83 -23 35 42.3 V T05
2021-01-15 15:55:55 C 15 17 02.05 -23 35 43.4 V T05
2021-01-15 16:06:28 C 15 17 02.97 -23 35 43.7 V T05
2021-02-11 15:27:01 C 16 00 35.298 -22 54 35.18 U F51
2021-02-11 15:32:42 C 16 00 35.549 -22 54 34.42 U F51
2021-02-11 15:38:24 C 16 00 35.811 -22 54 33.61 U F51
2021-02-11 15:44:04 C 16 00 36.066 -22 54 32.80 U F51