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
2021-06-11 06:26:16 C 14 22 07.68 -23 09 21.2 V 703
2021-06-12 08:20:26 C 14 21 18.64 -23 10 46.8 V T05
2021-06-12 08:25:04 C 14 21 18.49 -23 10 47.1 V T05
2021-06-12 08:32:59 C 14 21 18.22 -23 10 47.4 V T05
2021-06-12 08:47:30 C 14 21 17.70 -23 10 49.0 V T05
2021-06-14 08:13:41 C 14 19 58.89 -23 13 40.4 V T08
2021-06-14 08:18:59 C 14 19 58.71 -23 13 40.8 V T08
2021-06-14 08:28:58 C 14 19 58.43 -23 13 41.5 V T08
2021-06-14 08:44:53 C 14 19 58.00 -23 13 42.5 V T08
2021-07-08 07:29:24 C 14 20 09.85 -24 14 00.1 V T08
2021-07-08 07:33:25 C 14 20 09.90 -24 14 01.3 V T08
2021-07-08 07:44:02 C 14 20 10.15 -24 14 02.5 V T08
2021-07-08 08:01:20 C 14 20 10.44 -24 14 05.0 V T08
2023-07-12 23:35:08 C 22 05 09.319 -42 10 30.79 V M22
2023-07-13 00:10:00 C 22 05 07.949 -42 11 01.00 V M22
2023-07-13 00:12:40 C 22 05 07.848 -42 11 03.34 V M22
2023-07-13 00:55:03 C 22 05 06.187 -42 11 39.08 V M22
2023-07-16 12:29:28 C 22 01 39.552 -43 22 51.99 X F52
2023-07-16 12:41:20 C 22 01 38.950 -43 23 02.05 X F52
2023-07-16 12:53:13 C 22 01 38.348 -43 23 12.21 X F52
2023-07-16 13:05:05 C 22 01 37.746 -43 23 22.29 X F52
2023-07-22 22:35:07 C 21 52 49.284 -45 33 31.57 V M22
2023-07-22 22:43:14 C 21 52 48.706 -45 33 38.09 V M22
2023-07-22 23:34:04 C 21 52 45.024 -45 34 21.43 V M22
2023-07-30 04:58:42 C 21 38 51.382 -47 51 27.32 V W68
2023-07-30 05:01:19 C 21 38 51.209 -47 51 28.76 V W68
2023-07-30 05:08:42 C 21 38 50.458 -47 51 34.34 V W68
2023-07-30 05:16:37 C 21 38 49.687 -47 51 40.39 V W68
2023-08-05 04:29:13 C 21 24 30.223 -49 27 14.98 V W68
2023-08-05 04:33:09 C 21 24 29.784 -49 27 17.17 V W68
2023-08-05 04:37:08 C 21 24 29.347 -49 27 19.94 V W68
2023-08-05 05:14:30 C 21 24 25.157 -49 27 42.01 V W68
2023-08-10 02:06:19 C 21 11 14.880 -50 28 08.40 V M22
2023-08-10 02:10:31 C 21 11 14.402 -50 28 09.59 V M22
2023-08-10 02:39:05 C 21 11 10.973 -50 28 21.68 V M22
2023-08-10 02:47:06 C 21 11 10.034 -50 28 25.07 V M22
2023-08-11 05:11:54 C 21 08 04.970 -50 39 35.14 V W68
2023-08-11 05:16:30 C 21 08 04.390 -50 39 36.97 V W68
2023-08-11 05:39:54 C 21 08 01.570 -50 39 45.58 V W68
2023-08-11 06:18:47 C 21 07 56.743 -50 40 01.16 V W68
2023-08-24 21:50:30 C 20 29 47.146 -51 29 53.74 V M22
2023-08-24 21:55:04 C 20 29 46.649 -51 29 53.41 V M22
2023-08-24 22:38:16 C 20 29 41.789 -51 29 48.59 V M22
2023-08-24 22:45:42 C 20 29 40.987 -51 29 48.37 V M22
2023-09-04 02:49:15 C 20 07 14.801 -50 30 04.28 V W68
2023-09-04 02:53:27 C 20 07 14.458 -50 30 01.98 V W68
2023-09-04 03:00:53 C 20 07 13.826 -50 29 59.42 V W68
2023-09-04 03:12:06 C 20 07 12.955 -50 29 54.92 V W68
2023-09-04 03:16:06 C 20 07 12.619 -50 29 53.81 V W68
2023-09-04 03:16:45 C 20 07 12.614 -50 29 53.23 V W68
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)