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
2021-05-24 05:04:02 S 14 48 00.996 -22 46 05.77 – V C57
2021-05-24 05:04:02 s 1 -191311.28 0 +180673.00 8290.0 – C57
2021-05-24 05:24:02 S 14 47 59.287 -22 46 09.08 – V C57
2021-05-24 05:24:02 s 1 -191416.03 3 +179276.79 6040.0 – C57
2021-05-24 05:44:02 S 14 47 57.137 -22 46 10.92 – V C57
2021-05-24 05:44:02 s 1 -191514.96 3 +177875.17 8730.0 – C57
2021-05-24 05:54:02 S 14 47 56.090 -22 46 12.50 – V C57
2021-05-24 05:54:02 s 1 -191562.22 5 +177172.32 4370.0 – C57
2021-05-24 06:14:02 S 14 47 54.619 -22 46 13.62 – V C57
2021-05-24 06:14:02 s 1 -191652.30 6 +175762.54 4180.0 – C57
2021-05-24 06:24:02 S 14 47 53.592 -22 46 18.19 – V C57
2021-05-24 06:24:02 s 1 -191695.11 0 +175055.61 8300.0 – C57
2021-05-24 06:34:02 S 14 47 52.802 -22 46 17.87 – V C57
2021-05-24 06:34:02 s 1 -191736.41 2 +174347.31 8540.0 – C57
2021-05-24 06:44:02 S 14 47 51.806 -22 46 17.47 – V C57
2021-05-24 06:44:02 s 1 -191776.20 6 +173637.65 4880.0 – C57
2021-05-24 06:54:02 S 14 47 50.959 -22 46 19.24 – V C57
2021-05-24 06:54:02 s 1 -191814.48 3 +172926.62 7300.0 – C57
2021-05-24 07:04:02 S 14 47 50.062 -22 46 23.99 – V C57
2021-05-24 07:04:02 s 1 -191851.23 5 +172214.23 5780.0 – C57
2021-05-24 07:14:02 S 14 47 49.303 -22 46 22.94 – V C57
2021-05-24 07:14:02 s 1 -191886.45 4 +171500.46 310.0 – C57
2021-05-24 07:24:02 S 14 47 47.933 -22 46 21.36 – V C57
2021-05-24 07:24:02 s 1 -191920.13 3 +170785.33 860.0 – C57
2021-05-24 07:34:02 S 14 47 47.275 -22 46 25.79 – V C57
2021-05-24 07:34:02 s 1 -191952.26 3 +170068.82 7410.0 – C57
2021-05-24 07:54:02 S 14 47 45.665 -22 46 27.91 – V C57
2021-05-24 07:54:02 s 1 -192011.84 5 +168631.70 8430.0 – C57
2021-05-24 08:04:02 S 14 47 44.407 -22 46 29.86 – V C57
2021-05-24 08:04:02 s 1 -192039.28 0 +167911.07 2860.0 – C57
2021-05-24 08:14:02 S 14 47 43.481 -22 46 31.26 – V C57
2021-05-24 08:14:02 s 1 -192065.13 4 +167189.07 3220.0 – C57
2021-05-24 08:34:02 S 14 47 41.849 -22 46 29.57 – V C57
2021-05-24 08:34:02 s 1 -192112.06 5 +165740.93 1600.0 – C57
2021-05-24 08:44:02 S 14 47 41.057 -22 46 33.28 – V C57
2021-05-24 08:44:02 s 1 -192133.12 4 +165014.80 9590.0 – C57
2021-05-24 08:54:02 S 14 47 40.025 -22 46 31.37 – V C57
2021-05-24 08:54:02 s 1 -192152.56 9 +164287.28 3420.0 – C57
2021-05-24 09:04:02 S 14 47 39.062 -22 46 40.15 – V C57
2021-05-24 09:04:02 s 1 -192170.38 9 +163558.38 3060.0 – C57
2021-05-24 09:24:02 S 14 47 37.433 -22 46 39.86 – V C57
2021-05-24 09:24:02 s 1 -192201.12 5 +162096.43 9700.0 – C57
2021-05-24 09:44:02 S 14 47 35.410 -22 46 40.30 – V C57
2021-05-24 09:44:02 s 1 -192225.26 1 +160628.94 9340.0 – C57
2021-05-24 09:54:02 S 14 47 34.927 -22 46 43.86 – V C57
2021-05-24 09:54:02 s 1 -192234.83 3 +159893.12 7730.0 – C57
2021-05-24 10:14:02 S 14 47 32.537 -22 46 48.65 – V C57
2021-05-24 10:14:02 s 1 -192248.93 6 +158417.30 1540.0 – C57
2021-05-24 10:24:02 S 14 47 31.853 -22 46 43.21 – V C57
2021-05-24 10:24:02 s 1 -192253.45 1 +157677.31 6910.0 – 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)