IAA RAS IAA Minor Planet Database

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
2021-05-22 19:04:02 S 14 51 05.606 -22 41 31.96 – V C57
2021-05-22 19:04:02 s 1 -157964.49 6 +296568.11 8940.0 – C57
2021-05-22 19:14:02 S 14 51 04.258 -22 41 27.67 – V C57
2021-05-22 19:14:02 s 1 -158210.85 2 +296116.73 7040.0 – C57
2021-05-22 20:04:02 S 14 50 59.477 -22 41 35.63 – V C57
2021-05-22 20:04:02 s 1 -159424.97 3 +293859.17 5120.0 – C57
2021-05-22 20:14:02 S 14 50 58.882 -22 41 38.76 – V C57
2021-05-22 20:14:02 s 1 -159667.90 7 +293400.72 3880.0 – C57
2021-05-22 20:24:02 S 14 50 58.082 -22 41 45.92 – V C57
2021-05-22 20:24:02 s 1 -159907.00 7 +292947.25 4260.0 – C57
2021-05-22 20:34:02 S 14 50 57.223 -22 41 41.39 – V C57
2021-05-22 20:34:02 s 1 -160147.35 3 +292489.16 6880.0 – C57
2021-05-22 20:44:02 S 14 50 56.074 -22 41 45.38 – V C57
2021-05-22 20:44:02 s 1 -160388.20 5 +292027.79 190.0 – C57
2021-05-22 20:54:02 S 14 50 55.560 -22 41 46.10 – V C57
2021-05-22 20:54:02 s 1 -160626.98 7 +291568.09 8800.0 – C57
2021-05-22 21:14:02 S 14 50 53.705 -22 41 46.07 – V C57
2021-05-22 21:14:02 s 1 -161102.89 7 +290644.94 1460.0 – C57
2021-05-22 21:24:02 S 14 50 53.009 -22 41 47.65 – V C57
2021-05-22 21:24:02 s 1 -161340.87 1 +290179.82 7270.0 – C57
2021-05-22 21:44:02 S 14 50 50.856 -22 41 52.22 – V C57
2021-05-22 21:44:02 s 1 -161811.97 2 +289252.03 7650.0 – C57
2021-05-22 22:24:02 S 14 50 47.333 -22 42 02.09 – V C57
2021-05-22 22:24:02 s 1 -162748.42 7 +287379.39 1890.0 – C57
2021-05-22 22:34:02 S 14 50 46.270 -22 41 59.17 – V C57
2021-05-22 22:34:02 s 1 -162979.45 5 +286911.45 580.0 – C57
2021-05-22 22:44:02 S 14 50 45.403 -22 42 00.86 – V C57
2021-05-22 22:44:02 s 1 -163212.88 8 +286436.18 3860.0 – C57
2021-05-22 22:54:02 S 14 50 44.585 -22 42 02.52 – V C57
2021-05-22 22:54:02 s 1 -163445.08 2 +285960.97 4180.0 – C57
2021-05-22 23:04:02 S 14 50 43.409 -22 42 02.56 – V C57
2021-05-22 23:04:02 s 1 -163673.17 1 +285491.75 5610.0 – C57
2021-05-22 23:14:02 S 14 50 42.886 -22 42 04.39 – V C57
2021-05-22 23:14:02 s 1 -163904.62 5 +285013.12 3600.0 – C57
2021-05-22 23:24:02 S 14 50 42.017 -22 42 06.23 – V C57
2021-05-22 23:24:02 s 1 -164132.35 4 +284539.72 3500.0 – C57
2021-05-22 23:34:02 S 14 50 40.997 -22 42 07.92 – V C57
2021-05-22 23:34:02 s 1 -164361.19 5 +284061.52 5290.0 – C57
2021-05-22 23:54:02 S 14 50 39.106 -22 42 08.17 – V C57
2021-05-22 23:54:02 s 1 -164817.64 5 +283100.13 5110.0 – C57
2021-05-23 00:04:02 S 14 50 38.261 -22 42 12.85 – V C57
2021-05-23 00:04:02 s 1 -165043.98 3 +282619.61 510.0 – C57
2021-05-23 00:14:02 S 14 50 37.054 -22 42 15.48 – V C57
2021-05-23 00:14:02 s 1 -165269.95 1 +282137.33 4750.0 – C57
2021-05-23 00:24:02 S 14 50 36.463 -22 42 15.66 – V C57
2021-05-23 00:24:02 s 1 -165495.21 7 +281653.97 7120.0 – C57
2021-05-23 00:34:02 S 14 50 35.376 -22 42 18.18 – V C57
2021-05-23 00:34:02 s 1 -165719.80 7 +281169.49 7690.0 – C57
2021-05-23 00:44:02 S 14 50 34.406 -22 42 17.24 – V C57
2021-05-23 00:44:02 s 1 -165943.71 8 +280683.87 6450.0 – C57
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)