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
2013-03-29 10:34:16 C 12 48 21.888 +49 10 08.18 L F51
2013-03-29 10:51:23 C 12 48 18.472 +49 09 05.03 L F51
2013-03-29 22:26:41 C 12 46 14.74 +48 26 14.1 w I57
2013-03-29 22:27:41 C 12 46 14.29 +48 26 09.1 w I57
2013-03-29 22:28:11 C 12 46 14.27 +48 26 08.5 w I57
2013-03-30 07:26:26 C 12 44 38.39 +47 53 16.1 u H21
2013-03-30 07:29:11 C 12 44 37.88 +47 53 05.9 u H21
2013-03-30 07:31:57 C 12 44 37.38 +47 52 55.8 u H21
2013-03-30 07:34:42 C 12 44 36.88 +47 52 45.7 u H21
2013-03-30 07:37:27 C 12 44 36.38 +47 52 35.5 u H21
2013-03-30 22:32:09 C 12 42 09.66 +46 58 15.3 c J19
2013-03-30 22:36:26 C 12 42 08.91 +46 57 59.7 c J19
2013-03-30 22:40:41 C 12 42 08.18 +46 57 44.4 c J19
2013-03-30 22:44:56 C 12 42 07.42 +46 57 29.1 c J19
2013-03-30 22:49:12 C 12 42 06.70 +46 57 13.9 c J19
2013-03-30 22:53:28 C 12 42 05.98 +46 56 58.6 c J19
2013-03-30 22:57:43 C 12 42 05.23 +46 56 43.1 c J19
2013-03-30 23:01:58 C 12 42 04.49 +46 56 27.8 c J19
2013-03-30 23:06:13 C 12 42 03.78 +46 56 12.5 c J19
2013-03-30 23:10:28 C 12 42 03.03 +46 55 57.3 c J19
2013-04-02 21:51:33 C 12 31 54.56 +42 44 12.8 u J93
2013-04-02 21:54:37 C 12 31 54.14 +42 44 02.1 u J93
2013-04-02 22:00:42 C 12 31 53.36 +42 43 41.3 u J93
2013-04-03 07:13:27 C 12 30 43.67 +42 11 57.2 N I41
2013-04-03 07:56:09 C 12 30 37.96 +42 09 29.6 N I41
2013-04-03 08:39:40 C 12 30 32.15 +42 06 58.5 N I41
2013-04-03 10:25:26 C 12 30 19.818 +42 01 01.79 L F51
2013-04-03 10:42:17 C 12 30 17.561 +42 00 03.55 L F51
2013-04-03 11:35:00 C 12 30 10.540 +41 57 00.59 L F51
2013-04-03 11:51:09 C 12 30 08.399 +41 56 04.31 L F51
2013-04-04 07:38:40 C 12 27 50.75 +40 48 18.5 N I41
2013-04-04 08:21:24 C 12 27 45.47 +40 45 53.1 N I41
2013-04-04 09:04:13 C 12 27 40.23 +40 43 26.8 N I41
2013-04-05 22:13:17 C 12 23 46.63 +38 39 14.8 u J93
2013-04-05 22:19:23 C 12 23 45.95 +38 38 55.1 u J93
2013-04-05 22:25:07 C 12 23 45.15 +38 38 40.9 q C77
2013-04-05 22:25:28 C 12 23 45.28 +38 38 35.3 u J93
2013-04-05 22:29:08 C 12 23 44.69 +38 38 27.7 q C77
2013-04-06 21:11:12 C 12 21 35.82 +37 24 29.9 u J93
2013-04-06 21:21:48 C 12 21 34.78 +37 23 56.3 u J93
2013-04-06 21:24:51 C 12 21 34.50 +37 23 46.3 u J93
2013-04-15 20:58:34 C 12 07 54.37 +26 59 42.6 c A24
2013-04-15 20:59:36 C 12 07 54.33 +26 59 40.0 c A24
2013-04-17 22:05:59 C 12 06 07.33 +24 56 53.2 i C91
2013-04-17 22:11:00 C 12 06 07.14 +24 56 41.1 i C91
2013-04-17 22:16:00 C 12 06 06.97 +24 56 28.8 i C91
2013-04-17 22:20:59 C 12 06 06.80 +24 56 16.8 i C91
2013-04-17 22:25:59 C 12 06 06.59 +24 56 04.7 i C91
2013-04-17 22:30:59 C 12 06 06.41 +24 55 52.3 i C91
2013-04-17 22:36:00 C 12 06 06.23 +24 55 40.1 i C91
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)