5645 (1990 SP)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3873146300 ± 1.01e-08
Semi-major axis (a)1.3545419449 AU ± 5.68e-10
Inclination (i)13.50517209° ± 2.14e-06
Long. of Asc. Node (Ω)45.70240895° ± 6.76e-06
Arg. of Perihelion (ω)48.28455414° ± 7.07e-06
Mean Anomaly (M)54.54806058° ± 1.90e-06
Mean Motion (n)0.6252066507°/day ± 3.94e-10
Perihelion dist (q)0.82990803 AU ± 1.37e-08
Aphelion dist (Q)1.87917586 AU ± 1.37e-08
Orbital Period1.57648080 yr ± 9.92e-10
Physical Parameters
H (abs. magnitude)17.23
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.239″
Uncertainty0
Orbit TypeApollo
MOID0.054890 AU
Observations Used1586
Radar Obs Used1
Gaia Obs Used22
Oppositions15
Arc Total1974-2024
First Observation Used1974-08-13
Last Observation Used2024-09-26
Observations (1904)
Date Type RA Dec Mag Band Observatory
2023-09-04 03:25:37 C 20 07 11.849 -50 29 49.63 V W68
2023-09-04 03:41:31 C 20 07 10.711 -50 29 42.72 V W68
2023-09-16 02:41:53 C 19 52 11.803 -48 08 31.24 V W68
2023-09-16 02:46:28 C 19 52 11.575 -48 08 27.67 V W68
2023-09-16 02:58:46 C 19 52 11.179 -48 08 20.00 V W68
2023-09-16 03:20:46 C 19 52 10.500 -48 08 07.94 V W68
2023-09-17 19:53:33 C 19 51 06.106 -47 44 10.50 V M22
2023-09-17 19:58:14 C 19 51 05.998 -47 44 07.22 V M22
2023-09-17 20:06:56 C 19 51 05.794 -47 44 01.72 V M22
2023-09-20 14:48:12 S 19 49 51.49 -47 03 03.5 L C51
2023-09-20 16:21:32 S 19 49 50.14 -47 02 04.3 L C51
2023-09-20 17:54:41 S 19 49 48.86 -47 01 06.3 L C51
2023-09-20 17:54:52 S 19 49 48.86 -47 01 06.3 L C51
2023-09-20 19:28:01 S 19 49 47.61 -47 00 08.2 L C51
2023-09-21 04:47:39 S 19 49 40.60 -46 54 15.7 L C51
2023-09-21 07:54:08 S 19 49 38.47 -46 52 17.0 L C51
2023-10-04 01:23:55 C 19 52 02.354 -43 26 09.82 V W68
2023-10-04 01:31:08 C 19 52 02.462 -43 26 04.88 V W68
2023-10-04 01:35:47 C 19 52 02.498 -43 26 01.93 V W68
2023-10-04 01:52:19 C 19 52 02.844 -43 25 48.90 V W68
2023-10-15 00:57:21 C 20 01 56.179 -40 12 29.02 V W68
2023-10-15 01:01:54 C 20 01 56.359 -40 12 25.56 V W68
2023-10-15 01:09:55 C 20 01 56.746 -40 12 19.76 V W68
2023-10-15 01:27:24 C 20 01 57.506 -40 12 06.30 V W68
2023-11-08 00:59:48 C 20 40 09.089 -32 14 56.54 V W68
2023-11-08 01:04:23 C 20 40 09.434 -32 14 52.22 V W68
2023-11-08 01:18:37 C 20 40 10.567 -32 14 38.94 V W68
2023-11-08 01:26:03 C 20 40 11.122 -32 14 32.39 V W68
2023-11-11 01:15:32 C 20 46 02.186 -31 07 57.68 V W68
2023-11-11 01:20:10 C 20 46 02.568 -31 07 53.80 V W68
2023-11-11 01:30:02 C 20 46 03.398 -31 07 43.64 V W68
2023-11-11 01:58:18 C 20 46 05.640 -31 07 16.86 V W68
2023-12-09 02:19:27 C 21 47 25.012 -18 51 19.80 V 703
2023-12-09 02:28:07 C 21 47 25.814 -18 51 09.90 V 703
2023-12-29 01:44:06 C 22 34 52.950 -07 25 13.19 V 703
2023-12-29 01:47:21 C 22 34 53.231 -07 25 06.89 V 703
2023-12-29 01:50:37 C 22 34 53.548 -07 25 01.81 V 703
2023-12-29 01:53:53 C 22 34 53.836 -07 24 58.21 V 703
2023-12-30 04:58:02 C 22 37 36.422 -06 41 26.74 V T05
2023-12-30 05:02:36 C 22 37 36.864 -06 41 19.46 V T05
2023-12-30 05:10:25 C 22 37 37.627 -06 41 06.47 V T05
2023-12-30 05:28:20 C 22 37 39.374 -06 40 37.60 V T05
2024-01-01 05:43:12 C 22 42 29.393 -05 21 46.66 V T08
2024-01-01 05:48:11 C 22 42 29.837 -05 21 38.66 V T08
2024-01-01 05:55:47 C 22 42 30.622 -05 21 25.78 V T08
2024-01-01 06:23:11 C 22 42 33.286 -05 20 40.42 V T08
2024-01-01 06:23:55 C 22 42 33.382 -05 20 39.48 V T08
2024-01-03 02:26:17 C 22 46 58.498 -04 07 12.97 V 703
2024-01-03 02:29:35 C 22 46 58.868 -04 07 07.54 V 703
2024-01-03 02:32:52 C 22 46 59.243 -04 07 02.42 V 703
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2020-10-15 15:20:00 87074.9 0.4 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)