IAA RAS IAA Minor Planet Database

5143 Heracles (1991 VL)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7711709670 ± 6.95e-09
Semi-major axis (a)1.8347564263 AU ± 8.81e-10
Inclination (i)8.97896809° ± 6.58e-07
Long. of Asc. Node (Ω)309.09682018° ± 6.17e-06
Arg. of Perihelion (ω)228.20701038° ± 5.99e-06
Mean Anomaly (M)204.11730697° ± 8.55e-07
Mean Motion (n)0.3965926397°/day ± 2.86e-10
Perihelion dist (q)0.41984554 AU ± 1.28e-08
Aphelion dist (Q)3.24966731 AU ± 1.28e-08
Orbital Period2.48523594 yr ± 1.79e-09
Physical Parameters
H (abs. magnitude)14.04
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.196″
Uncertainty0
Orbit TypeApollo
MOID0.057437 AU
Observations Used4548
Radar Obs Used1
Gaia Obs Used175
Oppositions38
Arc Total1953-2026
First Observation Used1953-11-30
Last Observation Used2026-01-01
Observations (4888)
Date Type RA Dec Mag Band Observatory
2021-11-12 10:28:09 C 10 32 57.81 +36 53 06.1 – V 703
2021-11-12 10:36:04 C 10 33 02.54 +36 52 40.0 – V 703
2021-11-12 10:43:59 C 10 33 07.23 +36 52 14.8 – V 703
2021-11-12 10:51:53 C 10 33 12.00 +36 51 47.7 – V 703
2021-11-12 14:33:23 C 10 35 25.46 +36 39 24.9 – V T08
2021-11-12 14:38:02 C 10 35 28.23 +36 39 09.3 – V T08
2021-11-12 15:05:35 C 10 35 44.64 +36 37 36.2 – V T08
2021-11-12 15:14:24 C 10 35 49.90 +36 37 06.3 – V T08
2021-11-13 10:00:27 V 10 47 09.06 +35 29 44.5 15.1 V 270
2021-11-13 10:00:27 v 1 273.41726 +30.43478 – – 270
2021-11-13 10:23:50 V 10 47 23.38 +35 28 13.0 15.3 V 270
2021-11-13 10:23:50 v 1 273.41726 +30.43478 – – 270
2021-11-13 10:56:59 V 10 47 43.19 +35 26 08.8 14.7 V 270
2021-11-13 10:56:59 v 1 273.41726 +30.43478 – – 270
2021-11-13 11:15:31 V 10 47 54.16 +35 25 01.6 15.2 V 270
2021-11-13 11:15:31 v 1 273.41726 +30.43478 – – 270
2021-11-15 03:23:27 C 11 11 58.56 +32 40 36.6 – V 089
2021-11-15 03:26:46 C 11 12 00.52 +32 40 21.9 – V 089
2021-11-15 03:30:04 C 11 12 02.47 +32 40 07.4 – V 089
2021-11-15 03:33:22 C 11 12 04.40 +32 39 53.0 – V 089
2021-11-15 03:36:40 C 11 12 06.35 +32 39 38.2 – V 089
2021-11-15 03:39:58 C 11 12 08.28 +32 39 24.0 – V 089
2021-11-15 03:43:16 C 11 12 10.24 +32 39 09.4 – V 089
2021-11-15 03:46:34 C 11 12 12.19 +32 38 54.9 – V 089
2021-11-15 03:49:52 C 11 12 14.10 +32 38 40.2 – V 089
2021-11-15 03:53:10 C 11 12 16.07 +32 38 25.7 – V 089
2021-11-15 11:49:05 C 11 16 59.22 +32 02 57.2 – V 703
2021-11-15 11:57:18 C 11 17 04.03 +32 02 20.3 – V 703
2021-11-15 12:05:31 C 11 17 08.85 +32 01 43.2 – V 703
2021-11-15 12:13:45 C 11 17 13.65 +32 01 06.3 – V 703
2021-11-16 03:27:56 C 11 26 11.19 +30 50 04.6 – V 089
2021-11-16 03:31:15 C 11 26 13.12 +30 49 48.8 – V 089
2021-11-16 03:34:33 C 11 26 15.03 +30 49 32.8 – V 089
2021-11-16 04:03:22 C 11 26 31.71 +30 47 16.1 – V 089
2021-11-16 04:06:40 C 11 26 33.61 +30 47 00.7 – V 089
2021-11-16 11:26:34 C 11 30 50.94 +30 11 41.5 – V 703
2021-11-16 11:34:10 C 11 30 55.32 +30 11 04.8 – V 703
2021-11-16 11:41:46 C 11 30 59.71 +30 10 28.0 – V 703
2021-11-16 11:49:22 C 11 31 04.09 +30 09 51.2 – V 703
2021-11-17 03:17:01 C 11 39 58.34 +28 52 51.1 – V 089
2021-11-17 03:20:20 C 11 40 00.25 +28 52 34.2 – V 089
2021-11-17 03:28:33 C 11 40 04.86 +28 51 53.0 – V 089
2021-11-17 03:31:52 C 11 40 06.78 +28 51 36.0 – V 089
2021-11-17 03:35:11 C 11 40 08.64 +28 51 19.4 – V 089
2021-11-17 03:38:30 C 11 40 10.52 +28 51 02.2 – V 089
2021-11-17 03:41:49 C 11 40 12.41 +28 50 45.7 – V 089
2021-11-17 03:45:08 C 11 40 14.29 +28 50 28.7 – V 089
2021-11-17 03:48:27 C 11 40 16.16 +28 50 12.1 – V 089
2021-11-23 15:01:39 C 12 59 38.98 +14 22 22.3 – V T08
2021-11-23 15:16:16 C 12 59 45.39 +14 20 59.6 – V T08
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2016-12-03 14:46:00 163730800.42 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)