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
2020-10-11 02:58:36 S 06 54 50.719 -11 32 05.35 L C51
2020-10-11 04:32:40 S 06 55 37.109 -11 28 18.34 L C51
2020-10-11 04:32:51 S 06 55 37.214 -11 28 17.11 L C51
2020-10-11 06:06:55 S 06 56 23.702 -11 24 29.12 L C51
2020-10-11 07:40:59 S 06 57 10.270 -11 20 40.09 L C51
2020-10-11 14:38:35 C 07 00 41.58 -11 04 12.2 V T05
2020-10-11 15:03:37 C 07 00 53.71 -11 03 10.1 V T05
2020-10-11 15:21:25 C 07 01 02.33 -11 02 25.9 V T05
2020-10-15 23:19:01 C 07 55 32.49 -06 10 40.3 V 186
2020-10-15 23:32:27 C 07 55 39.61 -06 09 59.1 V 186
2020-10-15 23:36:35 C 07 55 41.80 -06 09 46.3 V 186
2020-10-15 23:38:38 C 07 55 42.87 -06 09 40.4 V 186
2020-10-15 23:41:45 C 07 55 44.52 -06 09 30.4 V 186
2020-10-16 14:44:59 C 08 03 54.40 -05 22 47.1 V T05
2020-10-16 15:12:57 C 08 04 09.16 -05 21 20.7 V T05
2020-10-16 15:26:10 C 08 04 16.13 -05 20 39.4 V T05
2020-10-18 10:30:57 C 08 27 42.22 -03 05 12.1 V 703
2020-10-18 10:39:14 C 08 27 46.64 -03 04 45.8 V 703
2020-10-18 10:47:31 C 08 27 50.99 -03 04 20.0 V 703
2020-10-18 10:55:49 C 08 27 55.51 -03 03 53.4 V 703
2020-10-18 14:02:33 C 08 29 36.90 -02 53 49.5 V T08
2020-10-18 14:10:30 C 08 29 41.12 -02 53 24.4 V T08
2020-10-18 14:16:30 C 08 29 44.29 -02 53 05.4 V T08
2020-10-18 14:39:03 C 08 29 56.22 -02 51 54.0 V T08
2020-10-20 13:57:44 C 08 55 20.06 -00 23 02.5 V T05
2020-10-20 14:02:22 C 08 55 22.47 -00 22 48.1 V T05
2020-10-20 14:12:19 C 08 55 27.66 -00 22 16.4 V T05
2020-10-20 14:17:35 C 08 55 30.36 -00 22 00.9 V T05
2020-10-20 14:20:13 C 08 55 31.73 -00 21 51.4 V T05
2020-10-20 14:34:44 C 08 55 39.25 -00 21 06.7 V T05
2020-10-22 11:17:14 C 09 18 54.23 +01 53 56.7 V 703
2020-10-22 11:25:12 C 09 18 58.21 +01 54 19.9 V 703
2020-10-22 11:33:09 C 09 19 02.20 +01 54 43.4 V 703
2020-10-22 11:41:06 C 09 19 06.16 +01 55 06.6 V 703
2020-10-22 14:05:48 C 09 20 20.38 +02 02 21.8 V T08
2020-10-22 14:11:07 C 09 20 23.06 +02 02 37.6 V T08
2020-10-22 14:19:44 C 09 20 27.33 +02 03 02.7 V T08
2020-10-22 14:36:24 C 09 20 35.62 +02 03 51.7 V T08
2020-10-22 20:34:38 C 09 23 36.42 +02 20 59.2 q D29
2020-10-22 20:49:54 C 09 23 43.97 +02 21 43.4 q D29
2020-11-03 12:31:57 C 11 18 20.64 +11 38 26.0 V 703
2020-11-03 12:35:18 C 11 18 21.65 +11 38 29.9 V 703
2020-11-03 12:38:39 C 11 18 22.70 +11 38 33.3 V 703
2020-11-03 12:41:59 C 11 18 23.75 +11 38 37.3 V 703
2020-11-04 14:54:17 C 11 26 27.82 +12 05 54.6 V T08
2020-11-04 15:02:17 C 11 26 30.15 +12 06 02.5 V T08
2020-11-04 15:26:51 C 11 26 37.34 +12 06 26.9 V T08
2020-11-12 12:50:10 C 12 14 43.13 +13 53 44.4 U I41
2020-11-12 12:56:52 C 12 14 44.55 +13 53 46.4 U I41
2020-11-12 13:03:37 C 12 14 45.96 +13 53 47.9 U I41
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)