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
2021-05-23 12:54:02 S 14 49 28.910 -22 43 56.39 V C57
2021-05-23 12:54:02 s 1 -180257.91 5 +242100.30 8660.0 C57
2021-05-23 13:04:02 S 14 49 27.986 -22 44 00.56 V C57
2021-05-23 13:04:02 s 1 -180423.16 8 +241527.73 1960.0 C57
2021-05-23 13:14:02 S 14 49 27.022 -22 44 01.79 V C57
2021-05-23 13:14:02 s 1 -180587.49 7 +240953.93 2830.0 C57
2021-05-23 13:24:02 S 14 49 25.846 -22 43 58.94 V C57
2021-05-23 13:24:02 s 1 -180750.89 9 +240378.91 1260.0 C57
2021-05-23 13:34:02 S 14 49 25.080 -22 44 03.05 V C57
2021-05-23 13:34:02 s 1 -180913.37 0 +239802.67 7240.0 C57
2021-05-23 13:44:02 S 14 49 24.022 -22 44 06.07 V C57
2021-05-23 13:44:02 s 1 -181074.90 6 +239225.20 760.0 C57
2021-05-23 14:04:02 S 14 49 22.644 -22 44 08.09 V C57
2021-05-23 14:04:02 s 1 -181395.15 7 +238066.58 370.0 C57
2021-05-23 14:14:02 S 14 49 21.322 -22 44 08.88 V C57
2021-05-23 14:14:02 s 1 -181553.86 4 +237485.43 6450.0 C57
2021-05-23 14:24:02 S 14 49 20.719 -22 44 11.00 V C57
2021-05-23 14:24:02 s 1 -181711.61 9 +236903.04 20.0 C57
2021-05-23 14:34:02 S 14 49 19.666 -22 44 16.58 V C57
2021-05-23 14:34:02 s 1 -181868.41 9 +236319.43 1090.0 C57
2021-05-23 15:14:02 S 14 49 16.406 -22 44 21.84 V C57
2021-05-23 15:14:02 s 1 -182485.97 8 +233972.62 10.0 C57
2021-05-23 15:34:02 S 14 49 14.410 -22 44 20.11 V C57
2021-05-23 15:34:02 s 1 -182788.91 6 +232791.79 4130.0 C57
2021-05-23 15:54:02 S 14 49 12.710 -22 44 24.94 V C57
2021-05-23 15:54:02 s 1 -183087.91 2 +231605.99 7900.0 C57
2021-05-23 16:04:02 S 14 49 11.628 -22 44 25.84 V C57
2021-05-23 16:04:02 s 1 -183235.92 2 +231011.22 5880.0 C57
2021-05-23 16:14:02 S 14 49 10.531 -22 44 28.64 V C57
2021-05-23 16:14:02 s 1 -183382.93 4 +230415.21 1240.0 C57
2021-05-23 16:34:02 S 14 49 08.645 -22 44 28.32 V C57
2021-05-23 16:34:02 s 1 -183673.94 4 +229219.45 4050.0 C57
2021-05-23 16:44:02 S 14 49 08.266 -22 44 30.70 V C57
2021-05-23 16:44:02 s 1 -183817.93 4 +228619.70 1490.0 C57
2021-05-23 16:54:02 S 14 49 06.869 -22 44 35.84 V C57
2021-05-23 16:54:02 s 1 -183960.90 9 +228018.69 6260.0 C57
2021-05-23 17:04:02 S 14 49 06.190 -22 44 29.26 V C57
2021-05-23 17:04:02 s 1 -184102.86 2 +227416.44 8350.0 C57
2021-05-23 17:14:02 S 14 49 05.186 -22 44 36.24 V C57
2021-05-23 17:14:02 s 1 -184243.79 1 +226812.92 7760.0 C57
2021-05-23 17:24:02 S 14 49 04.236 -22 44 40.34 V C57
2021-05-23 17:24:02 s 1 -184383.68 9 +226208.16 4470.0 C57
2021-05-23 17:44:02 S 14 49 02.434 -22 44 39.05 V C57
2021-05-23 17:44:02 s 1 -184660.38 0 +224994.86 9750.0 C57
2021-05-23 17:54:02 S 14 49 01.884 -22 44 36.92 V C57
2021-05-23 17:54:02 s 1 -184797.16 2 +224386.32 8290.0 C57
2021-05-23 18:04:02 S 14 49 00.600 -22 44 40.88 V C57
2021-05-23 18:04:02 s 1 -184932.89 6 +223776.52 4090.0 C57
2021-05-23 18:24:02 S 14 48 59.014 -22 44 41.93 V C57
2021-05-23 18:24:02 s 1 -185201.20 0 +222553.13 7400.0 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)