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
2020-07-18 14:21:11 C 01 08 39.84 -18 24 10.7 V T08
2020-07-18 14:28:40 C 01 08 40.54 -18 24 10.0 V T08
2020-07-18 14:34:38 C 01 08 41.05 -18 24 10.0 V T08
2020-07-18 14:53:27 C 01 08 42.67 -18 24 10.2 V T08
2020-07-19 13:04:17 C 01 10 42.61 -18 23 49.3 V T05
2020-07-19 13:10:16 C 01 10 43.10 -18 23 48.7 V T05
2020-07-19 13:18:12 C 01 10 43.80 -18 23 48.4 V T05
2020-07-19 13:34:18 C 01 10 45.17 -18 23 48.4 V T05
2020-07-23 13:33:59 C 01 19 25.78 -18 23 33.3 V T05
2020-07-23 13:38:36 C 01 19 26.21 -18 23 33.1 V T05
2020-07-23 13:47:54 C 01 19 26.95 -18 23 34.2 V T05
2020-07-23 14:11:06 C 01 19 29.04 -18 23 33.9 V T05
2020-07-29 13:50:22 C 01 32 39.29 -18 26 52.5 V T08
2020-07-29 13:55:01 C 01 32 39.72 -18 26 52.7 V T08
2020-07-29 14:09:37 C 01 32 41.02 -18 26 53.1 V T08
2020-07-29 14:25:32 C 01 32 42.42 -18 26 54.0 V T08
2020-07-31 13:29:28 C 01 37 05.25 -18 28 55.2 V T05
2020-07-31 13:34:05 C 01 37 05.65 -18 28 55.2 V T05
2020-07-31 13:41:59 C 01 37 06.37 -18 28 55.8 V T05
2020-07-31 13:59:08 C 01 37 07.89 -18 28 57.0 V T05
2020-08-01 14:11:59 C 01 39 23.83 -18 30 09.7 V T05
2020-08-01 14:21:38 C 01 39 24.72 -18 30 10.7 V T05
2020-08-01 14:26:19 C 01 39 25.14 -18 30 10.6 V T05
2020-08-01 14:52:49 C 01 39 27.52 -18 30 11.8 V T05
2020-08-06 02:35:19 C 01 49 40.49 -18 37 06.3 V C95
2020-08-06 02:50:25 C 01 49 41.84 -18 37 07.3 V C95
2020-08-06 03:05:32 C 01 49 43.25 -18 37 07.4 V C95
2020-08-09 14:42:03 C 01 57 49.01 -18 43 58.0 V T05
2020-08-09 14:52:02 C 01 57 49.95 -18 43 58.6 V T05
2020-08-09 14:54:41 C 01 57 50.22 -18 43 58.8 V T05
2020-08-10 13:05:44 C 02 00 01.21 -18 46 00.8 V T08
2020-08-10 13:20:29 C 02 00 02.64 -18 46 02.8 V T08
2020-08-10 13:39:07 C 02 00 04.40 -18 46 04.4 V T08
2020-08-10 13:43:46 C 02 00 04.87 -18 46 04.7 V T08
2020-08-12 13:51:49 C 02 04 51.03 -18 50 50.5 V T05
2020-08-12 13:59:33 C 02 04 51.75 -18 50 51.2 V T05
2020-08-12 14:24:40 C 02 04 54.16 -18 50 54.1 V T05
2020-08-16 12:00:02 C 02 14 23.13 -19 01 14.4 V T05
2020-08-16 12:08:00 C 02 14 23.90 -19 01 15.9 V T05
2020-08-16 12:16:37 C 02 14 24.78 -19 01 16.6 V T05
2020-08-16 12:38:55 C 02 14 27.00 -19 01 19.6 V T05
2020-08-18 13:52:42 C 02 19 32.90 -19 07 18.4 V T08
2020-08-18 13:55:22 C 02 19 33.21 -19 07 18.9 V T08
2020-08-18 13:59:20 C 02 19 33.59 -19 07 19.1 V T08
2020-08-19 14:07:17 C 02 22 05.71 -19 10 21.5 V T08
2020-08-19 14:09:56 C 02 22 06.00 -19 10 21.7 V T08
2020-08-19 14:19:16 C 02 22 06.93 -19 10 23.3 V T08
2020-08-19 14:30:29 C 02 22 08.04 -19 10 24.5 V T08
2020-08-22 13:31:17 C 02 29 45.031 -19 19 40.49 U F51
2020-08-22 13:35:06 C 02 29 45.41 -19 19 40.9 V T08
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)