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
2005-05-05 03:51:51 C 08 23 09.63 +33 07 34.6 r 703
2005-05-19 04:12:35 C 09 31 05.26 +25 31 30.1 19.4 o 644
2005-05-19 04:31:02 C 09 31 08.47 +25 31 04.0 19.4 o 644
2005-05-19 04:47:29 C 09 31 11.35 +25 30 40.5 19.3 o 644
2005-06-04 03:43:47 C 10 29 59.422 +16 44 25.24 n 645
2005-06-04 03:44:59 C 10 29 59.599 +16 44 23.64 n 645
2005-06-04 03:47:22 C 10 29 59.904 +16 44 20.27 n 645
2005-06-04 03:48:34 C 10 30 00.066 +16 44 18.88 n 645
2005-06-06 03:51:03 C 10 36 23.58 +15 41 36.5 r 703
2005-06-06 04:00:27 C 10 36 24.73 +15 41 24.2 r 703
2005-06-06 04:09:50 C 10 36 25.99 +15 41 12.3 r 703
2005-06-06 04:19:12 C 10 36 27.21 +15 41 00.0 r 703
2009-08-25 18:37:31 C 03 53 09.41 -02 45 50.9 r E12
2009-08-27 11:25:16 C 04 00 24.04 -02 15 53.9 r 703
2009-08-27 11:31:49 C 04 00 25.20 -02 15 48.7 r 703
2009-08-27 11:44:53 C 04 00 27.50 -02 15 39.0 r 703
2009-08-28 09:47:03 C 04 04 27.98 -01 58 45.9 r 703
2009-08-28 09:49:41 C 04 04 28.41 -01 58 44.5 r 703
2009-08-28 09:52:11 C 04 04 28.84 -01 58 42.6 r 703
2009-08-28 09:54:50 C 04 04 29.46 -01 58 40.4 r 703
2009-09-09 19:08:24 C 05 05 26.15 +02 29 04.3 r E12
2009-09-25 09:41:27 C 06 44 08.16 +09 33 01.2 18.1 c 704
2009-09-25 09:58:44 C 06 44 13.19 +09 33 21.9 18.4 c 704
2009-09-25 10:16:03 C 06 44 18.26 +09 33 41.4 18.6 c 704
2009-09-25 10:33:31 C 06 44 23.33 +09 34 01.6 18.6 c 704
2009-09-25 10:50:52 C 06 44 28.45 +09 34 22.1 18.5 c 704
2009-11-21 12:21:13 C 12 36 16.30 +11 12 16.1 r 703
2009-11-21 12:29:51 C 12 36 17.85 +11 12 09.7 r 703
2009-11-21 12:38:36 C 12 36 19.26 +11 12 02.5 r 703
2009-11-21 12:47:24 C 12 36 20.70 +11 11 55.5 r 703
2010-03-02 22:32:49 S 16 51 49.35 -15 30 09.3 L C51
2010-03-03 01:43:20 S 16 51 59.39 -15 31 30.0 L C51
2010-03-03 04:53:51 S 16 52 09.37 -15 32 50.2 L C51
2010-03-03 08:04:22 S 16 52 19.351 -15 34 10.42 L C51
2010-03-03 11:14:53 S 16 52 29.27 -15 35 30.6 L C51
2010-03-03 11:15:04 S 16 52 29.28 -15 35 30.5 L C51
2010-03-03 12:50:14 S 16 52 34.23 -15 36 10.8 L C51
2010-03-03 14:25:35 S 16 52 39.16 -15 36 50.7 L C51
2010-03-03 16:00:45 S 16 52 44.12 -15 37 28.9 L C51
2010-03-03 17:36:06 S 16 52 49.02 -15 38 11.0 L C51
2010-03-03 19:11:16 S 16 52 53.92 -15 38 51.2 L C51
2010-03-03 19:11:28 S 16 52 53.94 -15 38 50.9 L C51
2010-03-03 20:46:37 S 16 52 58.84 -15 39 31.3 L C51
2010-03-03 22:21:58 S 16 53 03.77 -15 40 11.0 L C51
2010-03-04 01:32:29 S 16 53 13.52 -15 41 31.0 L C51
2010-03-04 04:43:01 S 16 53 23.24 -15 42 51.2 L C51
2010-03-04 07:53:31 S 16 53 32.930 -15 44 11.44 L C51
2010-05-06 09:24:54 C 16 26 37.39 -27 10 20.4 18.7 c 704
2010-05-06 09:39:22 C 16 26 35.81 -27 10 24.9 18.8 c 704
2010-05-06 09:53:49 C 16 26 34.49 -27 10 31.2 18.6 c 704
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)