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
2013-04-18 23:39:43 C 12 05 20.67 +23 55 38.7 q 203
2013-04-18 23:55:12 C 12 05 20.16 +23 55 01.9 q 203
2013-04-19 21:55:14 C 12 04 46.04 +23 03 50.2 w I99
2013-04-19 21:58:06 C 12 04 45.96 +23 03 43.7 w I99
2013-04-19 22:03:16 C 12 04 45.78 +23 03 32.1 w I99
2013-04-20 05:14:36 C 12 04 35.18 +22 47 07.9 u 703
2013-04-20 05:24:25 C 12 04 34.89 +22 46 45.5 u 703
2013-04-20 05:34:09 C 12 04 34.60 +22 46 23.4 u 703
2013-04-20 05:43:52 C 12 04 34.32 +22 46 01.5 u 703
2013-04-23 20:07:07 C 12 02 59.68 +19 38 41.0 16.5 u 089
2013-04-23 20:09:16 C 12 02 59.63 +19 38 35.9 16.6 u 089
2013-04-23 20:11:25 C 12 02 59.60 +19 38 31.8 15.4 u 089
2013-04-23 20:13:34 C 12 02 59.54 +19 38 27.8 17.1 u 089
2013-04-23 20:15:43 C 12 02 59.53 +19 38 23.0 16.7 u 089
2013-04-23 20:17:52 C 12 02 59.50 +19 38 18.8 16.1 u 089
2013-04-23 20:20:01 C 12 02 59.42 +19 38 14.3 16.9 u 089
2013-04-23 20:22:10 C 12 02 59.42 +19 38 10.1 15.9 u 089
2013-04-23 20:24:19 C 12 02 59.36 +19 38 05.3 16.1 u 089
2013-04-23 20:26:28 C 12 02 59.33 +19 38 01.3 16.3 u 089
2013-04-24 20:41:47 C 12 02 42.52 +18 48 46.3 q C73
2013-04-24 20:42:57 C 12 02 42.49 +18 48 43.2 q C73
2013-04-24 20:44:07 C 12 02 42.49 +18 48 42.0 q C73
2013-04-24 20:45:16 C 12 02 42.44 +18 48 39.2 q C73
2013-04-24 20:46:26 C 12 02 42.44 +18 48 36.9 q C73
2013-04-24 20:47:36 C 12 02 42.42 +18 48 34.4 q C73
2013-04-24 20:48:45 C 12 02 42.40 +18 48 32.2 q C73
2013-04-24 20:49:55 C 12 02 42.38 +18 48 29.7 q C73
2013-04-24 20:51:05 C 12 02 42.37 +18 48 27.4 q C73
2013-04-24 20:52:14 C 12 02 42.30 +18 48 25.3 q C73
2013-04-24 20:52:39 C 12 02 42.49 +18 48 23.7 v 461
2013-04-24 20:53:23 C 12 02 42.32 +18 48 22.8 q C73
2013-04-24 20:54:33 C 12 02 42.34 +18 48 21.0 q C73
2013-04-24 20:55:43 C 12 02 42.23 +18 48 18.3 q C73
2013-04-24 20:56:51 C 12 02 42.29 +18 48 16.2 q C73
2013-04-24 20:58:01 C 12 02 42.25 +18 48 14.1 q C73
2013-04-24 20:59:10 C 12 02 42.25 +18 48 11.5 q C73
2013-04-24 21:00:20 C 12 02 42.31 +18 48 08.8 q C73
2013-04-24 21:01:29 C 12 02 42.19 +18 48 06.6 q C73
2013-04-24 21:05:21 C 12 02 42.30 +18 47 58.4 v 461
2013-04-24 21:18:02 C 12 02 42.11 +18 47 32.7 v 461
2013-04-24 21:30:46 C 12 02 41.92 +18 47 07.2 v 461
2013-04-25 02:57:42 C 12 02 39.23 +18 36 18.4 u H21
2013-04-25 03:02:18 C 12 02 39.15 +18 36 09.2 u H21
2013-04-25 03:06:41 C 12 02 39.08 +18 36 00.4 u H21
2013-04-25 03:11:05 C 12 02 39.03 +18 35 51.7 u H21
2013-04-25 03:15:28 C 12 02 38.96 +18 35 43.0 u H21
2013-04-25 03:19:38 C 12 02 38.90 +18 35 34.8 u H21
2013-04-25 03:24:01 C 12 02 38.84 +18 35 26.0 u H21
2013-04-26 03:52:02 C 12 02 26.66 +17 47 30.2 u H21
2013-04-26 03:58:38 C 12 02 26.57 +17 47 17.6 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)