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
2024-05-07 07:49:19 C 10 47 23.254 +20 56 58.02 V T05
2024-05-07 07:53:54 C 10 47 23.741 +20 56 49.70 V T05
2024-05-07 08:01:45 C 10 47 24.509 +20 56 34.98 V T05
2024-05-07 08:34:59 C 10 47 27.833 +20 55 33.82 V T05
2024-05-08 06:24:01 C 10 49 42.377 +20 15 51.52 V 703
2024-05-08 06:27:15 C 10 49 42.539 +20 15 46.04 V 703
2024-05-08 06:30:30 C 10 49 42.928 +20 15 39.96 V 703
2024-05-08 06:33:44 C 10 49 43.241 +20 15 34.13 V 703
2024-05-08 07:23:29 C 10 49 48.696 +20 14 09.10 V T05
2024-05-08 07:28:03 C 10 49 49.162 +20 14 00.85 V T05
2024-05-08 07:35:52 C 10 49 49.901 +20 13 46.56 V T05
2024-05-08 08:01:48 C 10 49 52.466 +20 12 59.65 V T05
2024-05-09 04:49:28 C 10 51 58.572 +19 35 53.52 V 703
2024-05-09 04:52:43 C 10 51 58.817 +19 35 47.65 V 703
2024-05-09 04:55:57 C 10 51 59.173 +19 35 41.50 V 703
2024-05-09 04:59:12 C 10 51 59.461 +19 35 36.06 V 703
2024-05-10 06:36:16 C 10 54 31.777 +18 50 48.48 V 703
2024-05-10 06:39:35 C 10 54 32.108 +18 50 42.54 V 703
2024-05-10 06:42:55 C 10 54 32.447 +18 50 37.03 V 703
2024-05-10 06:46:15 C 10 54 32.767 +18 50 31.45 V 703
2024-05-11 06:29:55 C 10 56 51.652 +18 09 52.70 V 703
2024-05-11 06:36:35 C 10 56 52.339 +18 09 43.45 V 703
2024-05-11 06:39:55 C 10 56 52.566 +18 09 37.55 V 703
2024-05-12 06:52:20 C 10 59 12.084 +17 29 00.13 V 703
2024-05-12 06:55:33 C 10 59 12.358 +17 28 55.16 V 703
2024-05-12 06:58:48 C 10 59 12.656 +17 28 49.04 V 703
2024-05-12 07:02:02 C 10 59 13.009 +17 28 44.29 V 703
2024-05-14 05:09:55 C 11 03 33.116 +16 13 34.79 V 703
2024-05-14 05:13:14 C 11 03 33.433 +16 13 28.49 V 703
2024-05-14 05:16:33 C 11 03 33.800 +16 13 23.59 V 703
2024-05-14 05:19:51 C 11 03 34.070 +16 13 18.62 V 703
2024-05-15 06:50:02 C 11 05 54.998 +15 32 59.60 V T05
2024-05-15 06:54:50 C 11 05 55.430 +15 32 52.87 V T05
2024-05-15 07:02:38 C 11 05 56.045 +15 32 39.48 V T05
2024-05-15 08:51:44 C 11 06 05.698 +15 29 48.41 V T05
2024-05-24 08:08:10 C 11 24 44.609 +10 20 10.32 V T08
2024-05-24 08:12:31 C 11 24 44.971 +10 20 04.70 V T08
2024-05-24 08:23:28 C 11 24 45.898 +10 19 50.16 V T08
2024-05-24 08:42:43 C 11 24 47.302 +10 19 24.38 V T08
2024-05-26 07:39:25 C 11 28 38.930 +09 18 21.71 V T05
2024-05-26 07:43:59 C 11 28 39.286 +09 18 16.02 V T05
2024-05-26 07:53:12 C 11 28 39.994 +09 18 04.00 V T05
2024-05-26 08:07:35 C 11 28 41.150 +09 17 45.24 V T05
2024-06-01 04:57:02 C 11 39 56.200 +06 26 21.01 V 703
2024-06-01 05:00:22 C 11 39 56.444 +06 26 16.55 V 703
2024-06-01 05:03:42 C 11 39 56.628 +06 26 11.29 V 703
2024-06-01 05:07:03 C 11 39 56.848 +06 26 08.84 V 703
2024-06-07 06:47:14 C 11 51 13.841 +03 44 52.44 V T05
2024-06-07 06:54:35 C 11 51 14.376 +03 44 44.30 V T05
2024-06-07 06:59:08 C 11 51 14.729 +03 44 39.52 V T05
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)