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
2020-11-12 13:10:20 C 12 14 47.38 +13 53 49.9 U I41
2020-11-12 13:17:04 C 12 14 48.78 +13 53 51.4 U I41
2020-11-16 12:17:26 C 12 33 51.70 +14 04 11.3 V 703
2020-11-16 12:25:03 C 12 33 53.21 +14 04 12.3 V 703
2020-11-16 12:32:41 C 12 33 54.51 +14 04 12.3 V 703
2020-11-16 12:40:19 C 12 33 55.97 +14 04 12.8 V 703
2020-11-25 12:40:14 C 13 09 27.00 +13 19 54.8 V 703
2020-11-25 12:45:33 C 13 09 27.73 +13 19 52.5 V 703
2020-11-25 12:50:51 C 13 09 28.50 +13 19 50.8 V 703
2020-11-25 12:56:10 C 13 09 29.25 +13 19 49.2 V 703
2020-12-06 14:58:00 C 13 44 44.26 +11 04 59.0 V T08
2020-12-06 15:12:15 C 13 44 45.95 +11 04 51.2 V T08
2020-12-06 15:28:20 C 13 44 47.88 +11 04 41.6 V T08
2020-12-06 15:36:22 C 13 44 48.83 +11 04 36.2 V T08
2020-12-07 15:10:02 C 13 47 40.00 +10 49 56.6 V T05
2020-12-07 15:10:42 C 13 47 40.08 +10 49 56.1 V T05
2020-12-07 15:20:41 C 13 47 41.28 +10 49 50.5 V T05
2020-12-07 15:24:41 C 13 47 41.72 +10 49 48.1 V T05
2020-12-07 15:37:15 C 13 47 43.19 +10 49 40.0 V T05
2020-12-07 15:46:01 C 13 47 44.26 +10 49 34.6 V T05
2020-12-07 15:46:41 C 13 47 44.37 +10 49 34.8 V T05
2020-12-07 15:52:20 C 13 47 45.00 +10 49 30.7 V T05
2020-12-21 12:43:07 C 14 25 09.77 +06 59 03.1 V 703
2020-12-21 12:51:13 C 14 25 10.60 +06 58 57.0 V 703
2020-12-21 12:59:20 C 14 25 11.46 +06 58 51.8 V 703
2020-12-21 13:07:27 C 14 25 12.29 +06 58 45.5 V 703
2021-01-03 12:15:01 C 14 56 44.74 +03 11 10.1 V 703
2021-01-03 12:22:45 C 14 56 45.55 +03 11 04.3 V 703
2021-01-03 12:30:30 C 14 56 46.24 +03 10 57.4 V 703
2021-01-03 12:38:14 C 14 56 46.94 +03 10 52.7 V 703
2021-01-10 12:13:04 C 15 12 40.51 +01 12 25.3 V 703
2021-01-10 12:20:35 C 15 12 41.20 +01 12 19.7 V 703
2021-01-10 12:28:07 C 15 12 41.94 +01 12 14.0 V 703
2021-01-10 12:35:39 C 15 12 42.53 +01 12 10.1 V 703
2021-01-14 14:56:43 C 15 21 39.82 +00 05 20.1 V T08
2021-01-14 15:01:22 C 15 21 40.19 +00 05 18.3 V T08
2021-01-14 15:12:39 C 15 21 41.20 +00 05 09.7 V T08
2021-01-14 15:41:39 C 15 21 43.67 +00 04 51.0 V T08
2021-01-18 15:26:46 C 15 30 09.53 -00 58 01.3 V T08
2021-01-18 15:47:21 C 15 30 11.18 -00 58 16.0 V T08
2021-01-18 15:55:18 C 15 30 11.78 -00 58 21.0 V T08
2021-01-18 16:03:57 C 15 30 12.55 -00 58 26.0 V T08
2021-02-15 14:27:42 C 16 19 53.08 -07 16 53.1 V T08
2021-02-15 14:35:42 C 16 19 53.54 -07 16 57.2 V T08
2021-02-15 14:43:00 C 16 19 53.95 -07 17 00.1 V T08
2021-02-15 14:57:37 C 16 19 54.79 -07 17 07.7 V T08
2021-02-17 14:54:28 C 16 22 41.61 -07 40 31.3 V T05
2021-02-17 14:59:47 C 16 22 41.88 -07 40 33.9 V T05
2021-02-17 15:09:44 C 16 22 42.44 -07 40 38.7 V T05
2021-02-17 15:36:15 C 16 22 43.80 -07 40 51.4 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)