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
2002-05-08 05:32:13 C 13 21 33.65 -02 56 41.0 18.0 c 704
2002-05-08 05:50:06 C 13 21 32.51 -02 56 54.1 18.1 c 704
2002-05-08 06:08:05 C 13 21 31.35 -02 57 07.1 17.8 c 704
2002-05-08 06:25:58 C 13 21 30.17 -02 57 19.8 18.1 c 704
2002-05-10 04:03:36 C 13 18 54.06 -03 29 31.9 17.9 c 704
2002-05-10 04:46:19 C 13 18 51.58 -03 30 02.2 17.5 c 704
2002-05-10 05:07:35 C 13 18 50.34 -03 30 16.7 17.7 c 704
2002-05-12 03:39:53 C 13 16 29.50 -04 02 14.6 17.8 c 704
2002-05-12 04:00:59 C 13 16 28.31 -04 02 28.0 17.7 c 704
2002-05-12 04:22:05 C 13 16 27.24 -04 02 42.5 17.7 c 704
2002-05-12 04:43:11 C 13 16 26.19 -04 02 57.1 17.9 c 704
2002-05-12 05:04:18 C 13 16 25.12 -04 03 11.2 17.6 c 704
2002-05-14 05:39:19 C 13 14 16.85 -04 35 35.7 17.4 c 704
2002-05-14 06:01:07 C 13 14 15.86 -04 35 49.4 17.7 c 704
2002-05-14 06:44:34 C 13 14 13.96 -04 36 17.7 17.8 c 704
2002-05-16 05:43:49 C 13 12 28.09 -05 06 46.1 18.3 c 704
2002-05-16 06:05:30 C 13 12 27.26 -05 07 00.8 18.5 c 704
2002-05-16 06:27:12 C 13 12 26.46 -05 07 14.4 18.5 c 704
2002-05-16 06:48:55 C 13 12 25.61 -05 07 28.0 18.5 c 704
2002-05-16 07:11:22 C 13 12 25.45 -05 07 40.8 18.7 c 608
2002-05-16 07:26:33 C 13 12 24.89 -05 07 50.4 18.6 c 608
2002-05-16 07:41:13 C 13 12 24.31 -05 07 59.7 18.6 c 608
2002-05-18 05:16:30 C 13 10 57.64 -05 36 48.8 18.2 c 704
2002-05-18 05:38:04 C 13 10 56.96 -05 37 02.3 18.7 c 704
2002-05-18 05:59:38 C 13 10 56.25 -05 37 15.6 18.2 c 704
2002-05-18 06:21:12 C 13 10 55.56 -05 37 29.6 18.6 c 704
2002-05-18 06:42:52 C 13 10 54.87 -05 37 42.6 18.3 c 704
2002-06-09 04:01:33 C 13 09 09.95 -10 28 50.9 18.7 c 704
2002-06-09 04:20:52 C 13 09 10.16 -10 29 00.2 18.8 c 704
2002-06-09 04:40:16 C 13 09 10.51 -10 29 09.3 19.1 c 704
2002-06-09 05:00:33 C 13 09 10.78 -10 29 20.1 19.1 c 704
2002-06-09 05:19:50 C 13 09 11.09 -10 29 29.7 19.0 c 704
2004-06-12 16:05:09 C 20 57 56.45 -39 17 56.9 r 474
2004-06-12 16:07:50 C 20 57 56.24 -39 17 59.0 r 474
2004-06-12 16:23:59 C 20 57 56.00 -39 18 10.0 r 474
2004-06-12 16:29:09 C 20 57 55.88 -39 18 13.6 r 474
2004-06-13 14:38:17 C 20 57 35.08 -39 33 27.1 r E17
2004-06-13 14:42:36 C 20 57 35.01 -39 33 29.6 r E17
2004-06-13 14:46:54 C 20 57 34.95 -39 33 32.6 r E17
2004-07-18 14:30:53 C 20 01 32.20 -49 00 25.3 r E12
2004-07-18 14:47:18 C 20 01 30.35 -49 00 32.7 r E12
2004-07-18 15:03:43 C 20 01 28.54 -49 00 40.0 r E12
2004-07-18 15:20:11 C 20 01 26.70 -49 00 47.1 r E12
2004-08-10 13:34:08 C 19 03 29.99 -49 57 19.9 r E12
2004-08-10 13:42:23 C 19 03 29.31 -49 57 18.7 r E12
2004-08-10 13:50:38 C 19 03 28.62 -49 57 16.7 r E12
2004-08-10 13:58:56 C 19 03 27.87 -49 57 15.4 r E12
2005-05-05 03:23:44 C 08 23 03.22 +33 08 10.0 r 703
2005-05-05 03:33:05 C 08 23 05.38 +33 07 59.1 r 703
2005-05-05 03:42:27 C 08 23 07.44 +33 07 46.6 r 703
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)