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
2010-05-06 10:24:02 C 16 26 31.29 -27 10 41.5 18.8 c 704
2010-08-10 04:38:40 S 15 10 55.52 -29 32 48.7 L C51
2010-08-10 07:49:12 S 15 11 05.01 -29 33 13.2 L C51
2010-08-10 12:34:53 S 15 11 19.27 -29 33 51.1 L C51
2010-08-10 15:45:24 S 15 11 28.718 -29 34 14.74 L C51
2010-08-10 17:20:45 S 15 11 33.533 -29 34 27.16 L C51
2010-08-10 18:55:55 S 15 11 38.335 -29 34 39.83 L C51
2010-08-10 20:31:16 S 15 11 43.130 -29 34 52.46 L C51
2010-08-11 07:37:59 S 15 12 16.83 -29 36 17.3 L C51
2010-08-11 10:48:31 S 15 12 26.31 -29 36 43.6 L C51
2012-05-22 09:50:37 C 22 06 18.48 -28 48 16.7 o 807
2012-05-22 09:59:17 C 22 06 19.01 -28 48 17.7 o 807
2012-05-22 10:07:57 C 22 06 19.54 -28 48 19.0 o 807
2012-10-18 11:29:26 C 20 33 31.38 -39 58 09.7 r E12
2012-10-18 11:59:55 C 20 33 32.14 -39 57 39.2 r E12
2012-12-08 02:10:39 C 21 45 13.03 -14 36 06.6 r G96
2012-12-08 02:17:39 C 21 45 13.50 -14 35 54.6 r G96
2012-12-08 02:24:44 C 21 45 13.96 -14 35 42.9 r G96
2012-12-08 02:31:50 C 21 45 14.43 -14 35 31.2 r G96
2013-01-20 02:22:33 C 22 27 03.57 +22 38 39.3 t 290
2013-01-20 02:25:32 C 22 27 03.51 +22 38 47.0 t 290
2013-01-20 02:28:32 C 22 27 03.47 +22 38 54.6 t 290
2013-02-27 02:45:19 C 20 09 34.28 +66 37 47.6 u 089
2013-02-27 02:48:10 C 20 09 32.80 +66 37 55.1 u 089
2013-02-27 02:51:00 C 20 09 31.38 +66 38 02.2 u 089
2013-02-27 02:53:50 C 20 09 29.91 +66 38 10.1 u 089
2013-02-27 02:56:40 C 20 09 28.44 +66 38 17.2 u 089
2013-02-27 02:59:30 C 20 09 26.98 +66 38 24.9 u 089
2013-02-27 03:02:20 C 20 09 25.52 +66 38 32.1 u 089
2013-02-27 03:05:11 C 20 09 24.04 +66 38 39.7 u 089
2013-02-27 03:08:01 C 20 09 22.64 +66 38 47.2 u 089
2013-02-27 03:10:51 C 20 09 21.11 +66 38 54.6 u 089
2013-02-27 22:00:08 C 19 59 27.58 +67 24 47.3 q C73
2013-02-27 22:01:18 C 19 59 27.01 +67 24 50.3 q C73
2013-02-27 22:02:28 C 19 59 26.40 +67 24 52.2 q C73
2013-02-27 22:03:37 C 19 59 25.75 +67 24 56.0 q C73
2013-02-27 22:04:46 C 19 59 25.10 +67 24 58.5 q C73
2013-02-27 22:05:56 C 19 59 24.46 +67 25 01.8 q C73
2013-02-27 22:07:05 C 19 59 23.87 +67 25 04.3 q C73
2013-02-27 22:08:15 C 19 59 23.42 +67 25 07.4 q C73
2013-02-27 22:09:25 C 19 59 22.82 +67 25 09.6 q C73
2013-02-27 22:10:34 C 19 59 22.28 +67 25 12.4 q C73
2013-02-27 22:11:44 C 19 59 21.56 +67 25 16.1 q C73
2013-02-27 22:12:53 C 19 59 20.98 +67 25 18.6 q C73
2013-02-27 22:14:03 C 19 59 20.32 +67 25 21.7 q C73
2013-02-27 22:15:12 C 19 59 19.67 +67 25 24.6 q C73
2013-02-27 22:16:21 C 19 59 19.02 +67 25 27.9 q C73
2013-02-27 22:17:30 C 19 59 18.43 +67 25 30.3 q C73
2013-02-27 22:18:05 C 19 59 18.09 +67 25 31.9 q C73
2013-02-27 22:18:40 C 19 59 17.83 +67 25 32.9 q C73
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)