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
2021-11-04 08:19:34 V 08 45 04.94 +42 58 29.5 15.7 V 270
2021-11-04 08:19:34 v 1 254.91687 +40.19618 – – 270
2021-11-04 08:50:23 V 08 45 19.96 +42 58 10.4 15.3 V 270
2021-11-04 08:50:23 v 1 254.91687 +40.19618 – – 270
2021-11-04 09:12:54 V 08 45 30.73 +42 57 54.7 15.5 V 270
2021-11-04 09:12:54 v 1 254.91687 +40.19618 – – 270
2021-11-04 14:21:16 C 08 48 00.08 +42 54 24.7 – V T08
2021-11-04 14:25:54 C 08 48 02.30 +42 54 21.2 – V T08
2021-11-04 15:03:52 C 08 48 20.56 +42 53 53.6 – V T08
2021-11-04 15:15:18 C 08 48 26.05 +42 53 45.2 – V T08
2021-11-05 09:38:34 C 08 57 35.32 +42 38 04.5 – V 703
2021-11-05 09:46:22 C 08 57 39.22 +42 37 57.6 – V 703
2021-11-05 09:54:11 C 08 57 43.14 +42 37 50.5 – V 703
2021-11-05 10:01:59 C 08 57 47.04 +42 37 43.6 – V 703
2021-11-05 23:20:52 V 09 04 35.60 +42 24 04.6 15.1 V 270
2021-11-05 23:20:52 v 1 016.33594 +48.20417 – – 270
2021-11-05 23:54:53 V 09 04 53.02 +42 23 30.9 15.0 V 270
2021-11-05 23:54:53 v 1 016.33594 +48.20417 – – 270
2021-11-06 00:17:06 V 09 05 04.55 +42 23 06.6 15.1 V 270
2021-11-06 00:17:06 v 1 016.33594 +48.20417 – – 270
2021-11-06 01:23:12 V 09 05 38.69 +42 21 56.7 15.1 V 270
2021-11-06 01:23:12 v 1 016.33594 +48.20417 – – 270
2021-11-06 09:43:06 C 09 10 00.21 +42 12 27.8 – V 703
2021-11-06 09:51:03 C 09 10 04.31 +42 12 17.0 – V 703
2021-11-06 09:59:00 C 09 10 08.45 +42 12 07.7 – V 703
2021-11-06 10:06:56 C 09 10 12.61 +42 11 58.6 – V 703
2021-11-06 14:24:19 C 09 12 28.17 +42 06 49.5 – V T05
2021-11-06 14:30:56 C 09 12 31.64 +42 06 41.3 – V T05
2021-11-06 14:40:52 C 09 12 36.83 +42 06 29.2 – V T05
2021-11-06 15:10:19 C 09 12 52.22 +42 05 52.7 – V T05
2021-11-08 13:39:45 C 09 38 22.67 +40 53 24.9 – V T08
2021-11-08 13:47:45 C 09 38 27.15 +40 53 10.4 – V T08
2021-11-08 13:55:46 C 09 38 31.63 +40 52 55.7 – V T08
2021-11-08 14:13:44 C 09 38 41.67 +40 52 22.7 – V T08
2021-11-09 10:02:14 C 09 50 01.43 +40 12 10.0 – V 703
2021-11-09 10:10:12 C 09 50 05.99 +40 11 53.1 – V 703
2021-11-09 10:18:11 C 09 50 10.69 +40 11 36.3 – V 703
2021-11-09 10:26:10 C 09 50 15.15 +40 11 19.2 – V 703
2021-11-09 19:18:38 S 09 55 21.835 +39 51 31.07 – L C51
2021-11-09 22:26:46 S 09 57 11.590 +39 44 11.36 – L C51
2021-11-10 03:08:14 S 09 59 56.347 +39 32 55.00 – L C51
2021-11-10 04:02:17 C 10 00 29.48 +39 30 32.8 – V L65
2021-11-10 04:19:57 C 10 00 39.77 +39 29 49.7 – V L65
2021-11-10 04:28:49 C 10 00 44.93 +39 29 28.2 – V L65
2021-11-10 06:17:06 S 10 01 47.232 +39 25 11.60 – L C51
2021-11-10 06:17:17 S 10 01 47.354 +39 25 11.64 – L C51
2021-11-10 13:44:25 C 10 06 13.27 +39 06 11.9 – V T05
2021-11-10 13:49:42 C 10 06 16.36 +39 05 58.4 – V T05
2021-11-10 13:59:01 C 10 06 21.82 +39 05 34.5 – V T05
2021-11-10 14:17:08 C 10 06 32.41 +39 04 48.1 – 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)