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
2021-05-25 03:34:02 S 14 45 57.233 -22 48 45.36 – V C57
2021-05-25 03:34:02 s 1 -181499.17 5 +73925.236 5380.0 – C57
2021-05-25 03:44:02 S 14 45 56.306 -22 48 42.19 – V C57
2021-05-25 03:44:02 s 1 -181259.68 4 +73040.164 100.0 – C57
2021-05-25 03:54:02 S 14 45 54.833 -22 48 42.73 – V C57
2021-05-25 03:54:02 s 1 -181016.96 6 +72153.789 6700.0 – C57
2021-05-25 04:24:02 S 14 45 52.387 -22 48 48.02 – V C57
2021-05-25 04:24:02 s 1 -180269.21 4 +69486.901 7200.0 – C57
2021-05-25 04:34:02 S 14 45 51.319 -22 48 42.52 – V C57
2021-05-25 04:34:02 s 1 -180013.35 5 +68595.368 750.0 – C57
2021-05-25 04:44:02 S 14 45 50.220 -22 48 50.26 – V C57
2021-05-25 04:44:02 s 1 -179754.15 3 +67702.559 5900.0 – C57
2021-05-25 05:04:02 S 14 45 48.226 -22 48 47.34 – V C57
2021-05-25 05:04:02 s 1 -179225.62 4 +65913.138 750.0 – C57
2021-05-25 05:44:02 S 14 45 44.489 -22 48 55.15 – V C57
2021-05-25 05:44:02 s 1 -178127.39 1 +62319.251 7050.0 – C57
2021-05-25 06:34:02 S 14 45 40.356 -22 48 54.72 – V C57
2021-05-25 06:34:02 s 1 -176675.34 2 +57799.238 1100.0 – C57
2021-05-25 07:04:02 S 14 45 37.030 -22 49 02.75 – V C57
2021-05-25 07:04:02 s 1 -175760.60 6 +55072.835 2500.0 – C57
2021-05-25 07:44:02 S 14 45 33.799 -22 49 06.49 – V C57
2021-05-25 07:44:02 s 1 -174488.70 1 +51421.301 3550.0 – C57
2021-05-25 08:04:02 S 14 45 31.231 -22 49 00.41 – V C57
2021-05-25 08:04:02 s 1 -173829.85 5 +49588.697 1820.0 – C57
2021-05-25 09:04:02 S 14 45 25.999 -22 49 08.04 – V C57
2021-05-25 09:04:02 s 1 -171758.99 3 +44064.500 990.0 – C57
2021-05-25 09:44:02 S 14 45 22.382 -22 49 17.36 – V C57
2021-05-25 09:44:02 s 1 -170297.43 1 +40360.602 8360.0 – C57
2021-05-25 10:14:02 S 14 45 18.907 -22 49 19.78 – V C57
2021-05-25 10:14:02 s 1 -169157.33 6 +37572.157 6930.0 – C57
2021-05-25 10:24:02 S 14 45 18.288 -22 49 10.13 – V C57
2021-05-25 10:24:02 s 1 -168768.76 8 +36640.742 8530.0 – C57
2021-05-25 10:44:02 S 14 45 16.682 -22 49 17.18 – V C57
2021-05-25 10:44:02 s 1 -167978.63 1 +34775.098 9380.0 – C57
2021-05-25 11:04:02 S 14 45 14.734 -22 49 14.63 – V C57
2021-05-25 11:04:02 s 1 -167170.93 8 +32905.801 6570.0 – C57
2021-05-25 11:14:02 S 14 45 13.663 -22 49 22.01 – V C57
2021-05-25 11:14:02 s 1 -166760.42 4 +31969.822 3590.0 – C57
2021-05-25 11:24:02 S 14 45 12.679 -22 49 21.29 – V C57
2021-05-25 11:24:02 s 1 -166345.41 8 +31032.977 9450.0 – C57
2021-05-25 11:34:02 S 14 45 11.902 -22 49 22.94 – V C57
2021-05-25 11:34:02 s 1 -165925.88 7 +30095.282 4070.0 – C57
2021-05-25 11:44:02 S 14 45 10.658 -22 49 22.44 – V C57
2021-05-25 11:44:02 s 1 -165501.79 5 +29156.756 7370.0 – C57
2021-05-25 12:14:02 S 14 45 07.937 -22 49 23.09 – V C57
2021-05-25 12:14:02 s 1 -164201.80 2 +26336.359 8470.0 – C57
2021-05-25 12:24:02 S 14 45 06.898 -22 49 24.64 – V C57
2021-05-25 12:24:02 s 1 -163759.11 1 +25394.682 5620.0 – C57
2021-05-25 12:44:02 S 14 45 04.992 -22 49 30.00 – V C57
2021-05-25 12:44:02 s 1 -162859.47 2 +23509.127 4590.0 – 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)