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
2021-09-16 08:24:19 C 04 51 24.32 +34 52 15.7 – q U55
2021-09-24 13:07:45 C 05 10 40.16 +36 23 02.4 – V T08
2021-09-24 13:12:24 C 05 10 40.62 +36 23 04.9 – V T08
2021-09-24 13:18:22 C 05 10 41.24 +36 23 07.2 – V T08
2021-09-24 13:55:01 C 05 10 44.97 +36 23 25.3 – V T08
2021-09-29 13:18:15 C 05 23 52.07 +37 22 18.1 – V T08
2021-09-29 13:22:15 C 05 23 52.51 +37 22 20.1 – V T08
2021-09-29 13:30:13 C 05 23 53.41 +37 22 24.5 – V T08
2021-09-29 13:44:48 C 05 23 55.06 +37 22 32.1 – V T08
2021-10-03 12:39:15 C 05 35 24.16 +38 11 39.4 – V T08
2021-10-03 12:46:33 C 05 35 25.05 +38 11 43.4 – V T08
2021-10-03 13:10:55 C 05 35 28.07 +38 11 56.6 – V T08
2021-10-03 13:21:33 C 05 35 29.39 +38 12 02.2 – V T08
2021-10-05 13:36:32 C 05 41 46.46 +38 37 49.7 – V T05
2021-10-05 13:39:10 C 05 41 46.80 +38 37 51.2 – V T05
2021-10-05 13:43:07 C 05 41 47.33 +38 37 53.3 – V T05
2021-10-05 13:58:01 C 05 41 49.27 +38 38 01.5 – V T05
2021-10-10 10:48:48 V 05 58 36.40 +39 42 32.2 16.0 V 270
2021-10-10 10:48:48 v 1 276.64257 +33.90563 – – 270
2021-10-10 10:49:12 V 05 58 36.59 +39 42 34.5 16.0 V 270
2021-10-10 10:49:12 v 1 276.64257 +33.90563 – – 270
2021-10-10 10:49:35 V 05 58 36.67 +39 42 33.9 16.3 V 270
2021-10-10 10:49:35 v 1 276.64257 +33.90563 – – 270
2021-10-10 10:51:42 V 05 58 36.93 +39 42 34.6 16.0 V 270
2021-10-10 10:51:42 v 1 276.64257 +33.90563 – – 270
2021-10-11 08:20:10 C 06 02 00.25 +39 54 38.2 – V 703
2021-10-11 08:27:54 C 06 02 01.46 +39 54 43.8 – V 703
2021-10-11 08:35:38 C 06 02 02.69 +39 54 48.7 – V 703
2021-10-11 08:43:22 C 06 02 03.91 +39 54 53.0 – V 703
2021-10-11 13:48:37 C 06 02 52.49 +39 57 50.9 – V T08
2021-10-11 13:51:16 C 06 02 52.91 +39 57 52.3 – V T08
2021-10-11 13:57:54 C 06 02 53.95 +39 57 56.1 – V T08
2021-10-11 14:05:12 C 06 02 55.10 +39 58 00.3 – V T08
2021-10-13 13:55:43 C 06 10 53.22 +40 25 17.0 – V T05
2021-10-13 13:59:41 C 06 10 53.89 +40 25 19.4 – V T05
2021-10-13 14:10:54 C 06 10 55.78 +40 25 25.8 – V T05
2021-10-15 08:18:24 C 06 18 27.33 +40 49 28.8 – V 703
2021-10-15 08:26:10 C 06 18 28.71 +40 49 33.6 – V 703
2021-10-15 08:33:56 C 06 18 30.12 +40 49 38.4 – V 703
2021-10-15 08:41:42 C 06 18 31.51 +40 49 42.6 – V 703
2021-10-15 13:20:59 C 06 19 23.04 +40 52 27.2 – V T08
2021-10-15 13:23:38 C 06 19 23.52 +40 52 28.9 – V T08
2021-10-15 13:27:37 C 06 19 24.25 +40 52 31.2 – V T08
2021-10-15 13:42:13 C 06 19 26.90 +40 52 39.8 – V T08
2021-10-17 08:30:53 C 06 27 42.93 +41 17 01.7 – V 703
2021-10-17 08:38:37 C 06 27 44.42 +41 17 06.1 – V 703
2021-10-17 08:46:22 C 06 27 45.96 +41 17 10.8 – V 703
2021-10-17 08:54:06 C 06 27 47.49 +41 17 16.0 – V 703
2021-10-17 12:55:27 C 06 28 35.85 +41 19 36.2 – V T05
2021-10-17 13:03:23 C 06 28 37.42 +41 19 40.8 – V T05
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)