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
2013-03-04 03:52:15 C 18 52 06.68 +70 52 32.9 c A24
2013-03-04 03:53:18 C 18 52 05.95 +70 52 34.2 c A24
2013-03-04 03:56:58 C 18 52 02.97 +70 52 40.1 c A24
2013-03-04 03:58:01 C 18 52 02.18 +70 52 41.7 c A24
2013-03-04 04:54:21 C 18 51 16.65 +70 54 14.0 c A24
2013-03-04 04:55:23 C 18 51 16.19 +70 54 15.2 c A24
2013-03-04 04:59:04 C 18 51 12.91 +70 54 20.9 c A24
2013-03-04 05:00:06 C 18 51 12.14 +70 54 22.6 c A24
2013-03-05 03:33:25 C 18 32 51.95 +71 25 51.6 c A24
2013-03-05 03:34:27 C 18 32 51.20 +71 25 52.7 c A24
2013-03-05 03:35:32 C 18 32 50.28 +71 25 54.3 c A24
2013-03-05 03:36:34 C 18 32 49.35 +71 25 55.8 c A24
2013-03-06 20:50:28 C 17 56 27.72 +72 05 01.4 o C60
2013-03-06 20:51:08 C 17 56 27.08 +72 05 01.3 o C60
2013-03-06 20:51:49 C 17 56 26.54 +72 05 02.2 o C60
2013-03-06 20:52:28 C 17 56 25.93 +72 05 02.0 o C60
2013-03-06 20:53:07 C 17 56 25.37 +72 05 02.5 o C60
2013-03-06 20:53:49 C 17 56 24.79 +72 05 03.3 o C60
2013-03-06 20:54:29 C 17 56 24.20 +72 05 03.3 o C60
2013-03-06 20:55:08 C 17 56 23.52 +72 05 04.1 o C60
2013-03-06 20:55:48 C 17 56 22.98 +72 05 04.3 o C60
2013-03-06 20:56:29 C 17 56 22.56 +72 05 04.6 o C60
2013-03-06 21:00:36 C 17 56 18.64 +72 05 08.8 o C60
2013-03-06 21:01:16 C 17 56 17.92 +72 05 08.8 o C60
2013-03-06 21:01:55 C 17 56 17.42 +72 05 09.2 o C60
2013-03-06 21:04:34 C 17 56 14.87 +72 05 11.0 o C60
2013-03-13 22:59:55 C 15 21 50.38 +69 54 20.1 r 168
2013-03-13 23:04:45 C 15 21 46.52 +69 54 10.3 r 168
2013-03-14 21:03:00 C 15 05 19.52 +69 04 24.7 r 168
2013-03-14 21:07:10 C 15 05 16.42 +69 04 15.4 r 168
2013-03-14 21:54:00 C 15 04 41.94 +69 02 25.1 r 168
2013-03-14 21:59:00 C 15 04 38.24 +69 02 13.2 r 168
2013-03-16 04:57:02 C 14 43 29.09 +67 42 24.4 q A86
2013-03-16 04:58:39 C 14 43 27.99 +67 42 19.9 q A86
2013-03-16 04:59:49 C 14 43 27.18 +67 42 16.7 q A86
2013-03-16 05:01:10 C 14 43 26.26 +67 42 13.1 q A86
2013-03-21 00:10:39 C 13 44 21.10 +61 35 41.8 c A24
2013-03-21 00:11:42 C 13 44 20.59 +61 35 38.2 c A24
2013-03-22 01:04:21 C 13 34 49.22 +60 07 14.6 c A24
2013-03-22 01:05:24 C 13 34 48.84 +60 07 11.0 c A24
2013-03-22 02:06:44 C 13 34 25.60 +60 03 28.9 c A24
2013-03-22 02:07:46 C 13 34 25.22 +60 03 25.6 c A24
2013-03-28 05:57:43 C 12 53 55.27 +50 55 55.0 u H21
2013-03-28 06:03:32 C 12 53 54.00 +50 55 33.3 u H21
2013-03-28 06:09:21 C 12 53 52.72 +50 55 11.7 u H21
2013-03-28 06:15:11 C 12 53 51.48 +50 54 50.2 u H21
2013-03-28 06:21:00 C 12 53 50.20 +50 54 28.6 u H21
2013-03-28 06:26:49 C 12 53 48.93 +50 54 07.0 u H21
2013-03-28 06:32:38 C 12 53 47.66 +50 53 45.3 u H21
2013-03-28 06:36:42 C 12 53 46.79 +50 53 30.1 u H21
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)