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
1953-11-30 02:01:59 22 52 53.07 +01 30 56.5 261
1953-11-30 02:46:59 22 52 53.30 +01 30 54.8 261
1962-08-03 03:11:22 19 24 15.90 -26 11 49.6 15.0 760
1962-08-03 03:21:36 X 19 24.1 -26 10 15.0 760
1962-08-03 04:13:52 19 24 11.27 -26 10 58.1 15.0 760
1982-07-24 07:23:59 22 20 11.19 -08 33 31.0 688
1982-07-24 07:39:00 22 20 09.51 -08 33 37.2 688
1982-08-20 11:53:46 21 13 36.74 -12 19 02.1 413
1982-08-20 13:33:47 21 13 28.42 -12 19 28.9 413
1991-10-05 09:33:59 A 02 05 23.21 +29 00 39.9 17.9 675
1991-10-05 10:29:45 A 02 05 19.51 +29 00 40.3 675
1991-10-10 10:19:30 A 01 56 55.93 +28 55 55.3 17.0 675
1991-10-10 10:52:30 A 01 56 53.57 +28 55 52.0 675
1991-10-12 10:23:00 A 01 53 13.48 +28 51 20.3 675
1991-10-12 10:59:00 A 01 53 10.66 +28 51 16.3 675
1991-11-07 06:53:59 A 00 54 47.03 +25 04 54.0 17.2 675
1991-11-08 04:40:14 A 00 52 41.18 +24 51 36.3 675
1991-11-09 07:28:29 A 00 50 07.18 +24 34 54.0 675
1991-11-29 22:04:00 A 00 12 01.23 +18 55 49.8 m 587
1991-12-01 02:36:15 A 00 10 29.80 +18 36 52.7 17.0 675
1991-12-01 03:34:44 A 00 10 26.64 +18 36 14.8 675
1991-12-02 19:13:33 00 08 27.44 +18 10 17.1 m 587
1991-12-03 02:24:59 A 00 08 07.04 +18 05 39.4 675
1991-12-03 03:12:15 A 00 08 04.69 +18 05 09.4 675
1991-12-04 23:58:31 C 00 06 03.41 +17 36 44.1 801
1991-12-05 00:17:47 C 00 06 02.54 +17 36 31.7 801
1991-12-06 00:42:33 C 00 05 01.44 +17 21 24.1 801
1991-12-06 00:53:02 C 00 05 01.00 +17 21 17.9 801
1991-12-07 18:29:00 00 03 25.16 +16 56 08.1 m 587
1991-12-29 19:03:30 23 56 35.91 +12 55 08.5 m 587
1991-12-29 19:43:59 23 56 36.07 +12 54 58.3 m 587
1991-12-31 02:52:45 A 23 56 53.50 +12 45 19.2 17.2 675
1991-12-31 03:50:30 A 23 56 53.96 +12 45 01.8 675
1992-01-01 22:59:52 C 23 57 24.61 +12 32 31.8 z 801
1992-01-01 23:30:14 C 23 57 24.95 +12 32 23.3 z 801
1992-01-05 22:56:41 C 23 58 58.23 +12 07 46.9 z 801
1992-01-05 23:21:16 C 23 58 58.66 +12 07 41.0 z 801
1992-02-02 23:03:32 C 00 22 11.60 +10 28 42.1 z 801
1992-02-02 23:32:03 C 00 22 12.81 +10 28 38.8 z 801
1992-02-05 23:22:43 C 00 25 21.53 +10 18 11.0 z 801
1992-02-05 23:58:50 C 00 25 23.05 +10 18 05.0 z 801
1992-04-30 17:13:39 A 23 05 20.78 -09 17 51.6 17.1 474
1992-04-30 17:31:50 A 23 05 21.51 -09 17 42.7 474
1992-05-02 18:07:16 A 23 07 16.31 -08 55 29.0 16.9 474
1992-06-28 10:48:30 A 23 17 03.01 -03 26 11.0 17.2 675
1992-06-28 11:26:00 A 23 17 01.71 -03 26 11.8 675
1992-06-29 10:28:30 A 23 16 10.64 -03 26 44.4 675
1992-06-29 11:08:00 A 23 16 09.03 -03 26 46.1 675
1992-07-26 07:16:33 C 22 36 19.67 -05 17 22.3 z 801
1992-07-26 07:30:31 C 22 36 18.51 -05 17 26.5 z 801
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)