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
2020-08-22 13:40:24 C 02 29 45.95 -19 19 41.7 V T08
2020-08-22 13:45:42 C 02 29 46.51 -19 19 42.3 V T08
2020-08-22 13:46:06 C 02 29 46.568 -19 19 42.57 U F51
2020-08-22 14:00:58 C 02 29 48.116 -19 19 44.62 U F51
2020-08-22 14:01:04 C 02 29 48.11 -19 19 44.3 V T08
2020-08-22 14:15:49 C 02 29 49.661 -19 19 46.70 U F51
2020-09-01 13:12:18 C 02 57 38.34 -19 51 26.7 V T05
2020-09-01 13:14:57 C 02 57 38.65 -19 51 27.0 V T05
2020-09-01 13:18:54 C 02 57 39.11 -19 51 27.9 V T05
2020-09-01 13:26:48 C 02 57 40.05 -19 51 28.5 V T05
2020-09-02 11:41:58 C 03 00 29.73 -19 54 09.7 V T05
2020-09-02 11:49:56 C 03 00 30.70 -19 54 10.6 V T05
2020-09-02 12:03:15 C 03 00 32.35 -19 54 12.2 V T05
2020-09-03 07:41:43 C 03 03 03.65 -19 56 15.0 o W92
2020-09-03 07:47:06 C 03 03 04.30 -19 56 14.4 o W92
2020-09-03 12:30:26 C 03 03 41.53 -19 57 04.3 V T08
2020-09-03 12:33:05 C 03 03 41.81 -19 57 05.1 V T08
2020-09-03 12:37:04 C 03 03 42.33 -19 57 05.5 V T08
2020-09-03 12:44:22 C 03 03 43.27 -19 57 06.4 V T08
2020-09-04 02:31:32 C 03 05 31.32 -19 58 46.6 V C95
2020-09-04 02:38:51 C 03 05 32.27 -19 58 47.5 V C95
2020-09-04 13:01:35 C 03 06 54.96 -19 59 49.9 V T08
2020-09-04 13:04:15 C 03 06 55.30 -19 59 50.2 V T08
2020-09-04 13:12:14 C 03 06 56.32 -19 59 51.1 V T08
2020-09-04 13:26:22 C 03 06 58.11 -19 59 52.9 V T08
2020-09-05 12:36:24 C 03 10 05.15 -20 02 19.5 V T05
2020-09-05 12:41:44 C 03 10 05.88 -20 02 20.3 V T05
2020-09-05 12:51:01 C 03 10 07.08 -20 02 21.0 V T05
2020-09-05 13:05:35 C 03 10 08.97 -20 02 23.1 V T05
2020-09-07 13:17:47 C 03 16 50.28 -20 06 57.5 V T08
2020-09-07 13:20:26 C 03 16 50.64 -20 06 57.7 V T08
2020-09-07 13:22:25 C 03 16 50.90 -20 06 57.9 V T08
2020-09-07 13:26:24 C 03 16 51.44 -20 06 58.2 V T08
2020-09-07 13:27:04 C 03 16 51.54 -20 06 58.3 V T08
2020-09-07 13:30:23 C 03 16 51.98 -20 06 58.6 V T08
2020-09-07 13:41:40 C 03 16 53.50 -20 06 59.8 V T08
2020-09-07 13:42:59 C 03 16 53.68 -20 06 59.9 V T08
2020-09-09 13:45:38 C 03 23 52.84 -20 10 41.3 V T05
2020-09-09 13:54:49 C 03 23 54.13 -20 10 41.9 V T05
2020-09-09 13:59:26 C 03 23 54.78 -20 10 42.3 V T05
2020-09-09 14:13:25 C 03 23 56.77 -20 10 43.1 V T05
2020-09-11 13:16:29 C 03 31 08.69 -20 13 13.5 V T08
2020-09-11 13:21:07 C 03 31 09.39 -20 13 13.9 V T08
2020-09-11 13:32:25 C 03 31 11.08 -20 13 14.5 V T08
2020-09-11 14:52:07 C 03 31 23.67 -20 12 52.3 q E89
2020-09-11 14:58:36 C 03 31 24.66 -20 12 52.7 q E89
2020-09-11 15:06:48 C 03 31 25.89 -20 12 53.3 q E89
2020-09-15 09:59:04 C 03 46 30.71 -20 13 59.9 V 703
2020-09-15 10:07:00 C 03 46 31.98 -20 14 00.9 V 703
2020-09-15 10:14:54 C 03 46 33.32 -20 14 00.7 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)