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 11:44:02 S 14 47 24.341 -22 46 59.74 – V C57
2021-05-24 11:44:02 s 1 -192227.43 5 +151707.17 100.0 – C57
2021-05-24 11:54:02 S 14 47 23.568 -22 46 59.52 – V C57
2021-05-24 11:54:02 s 1 -192216.27 4 +150954.61 5170.0 – C57
2021-05-24 12:24:02 S 14 47 20.614 -22 46 59.30 – V C57
2021-05-24 12:24:02 s 1 -192172.01 3 +148688.54 2690.0 – C57
2021-05-24 12:54:02 S 14 47 17.717 -22 47 08.48 – V C57
2021-05-24 12:54:02 s 1 -192111.41 0 +146409.78 7780.0 – C57
2021-05-24 13:24:02 S 14 47 15.478 -22 47 10.72 – V C57
2021-05-24 13:24:02 s 1 -192035.77 6 +144116.18 4400.0 – C57
2021-05-24 14:24:02 S 14 47 10.126 -22 47 14.96 – V C57
2021-05-24 14:24:02 s 1 -191830.06 1 +139495.43 8830.0 – C57
2021-05-24 15:44:02 S 14 47 02.304 -22 47 21.48 – V C57
2021-05-24 15:44:02 s 1 -191446.28 2 +133255.34 4310.0 – C57
2021-05-24 16:04:02 S 14 47 00.775 -22 47 29.90 – V C57
2021-05-24 16:04:02 s 1 -191330.17 6 +131681.16 4100.0 – C57
2021-05-24 16:34:02 S 14 46 57.967 -22 47 35.23 – V C57
2021-05-24 16:34:02 s 1 -191140.51 1 +129309.28 9160.0 – C57
2021-05-24 16:44:02 S 14 46 57.192 -22 47 30.73 – V C57
2021-05-24 16:44:02 s 1 -191073.10 6 +128515.81 150.0 – C57
2021-05-24 17:04:02 S 14 46 54.946 -22 47 35.99 – V C57
2021-05-24 17:04:02 s 1 -190931.94 4 +126924.63 5920.0 – C57
2021-05-24 17:44:02 S 14 46 51.559 -22 47 42.97 – V C57
2021-05-24 17:44:02 s 1 -190623.86 6 +123725.26 1700.0 – C57
2021-05-24 18:04:02 S 14 46 49.471 -22 47 43.01 – V C57
2021-05-24 18:04:02 s 1 -190456.74 2 +122117.06 1210.0 – C57
2021-05-24 18:14:02 S 14 46 48.804 -22 47 38.69 – V C57
2021-05-24 18:14:02 s 1 -190369.86 3 +121310.83 2500.0 – C57
2021-05-24 18:34:02 S 14 46 46.870 -22 47 43.91 – V C57
2021-05-24 18:34:02 s 1 -190189.40 2 +119694.12 8000.0 – C57
2021-05-24 18:44:02 S 14 46 45.958 -22 47 45.82 – V C57
2021-05-24 18:44:02 s 1 -190095.79 4 +118883.64 2140.0 – C57
2021-05-24 19:04:02 S 14 46 44.381 -22 47 49.85 – V C57
2021-05-24 19:04:02 s 1 -189901.75 3 +117258.43 3040.0 – C57
2021-05-24 19:14:02 S 14 46 43.363 -22 47 48.12 – V C57
2021-05-24 19:14:02 s 1 -189801.29 3 +116443.70 9720.0 – C57
2021-05-24 19:24:02 S 14 46 42.535 -22 47 48.88 – V C57
2021-05-24 19:24:02 s 1 -189698.52 0 +115627.55 510.0 – C57
2021-05-24 19:54:02 S 14 46 39.614 -22 47 55.61 – V C57
2021-05-24 19:54:02 s 1 -189376.18 4 +113170.61 7220.0 – C57
2021-05-24 20:14:02 S 14 46 37.750 -22 47 59.03 – V C57
2021-05-24 20:14:02 s 1 -189149.46 7 +111525.58 4930.0 – C57
2021-05-24 20:34:02 S 14 46 35.794 -22 47 59.06 – V C57
2021-05-24 20:34:02 s 1 -188913.15 1 +109874.89 8230.0 – C57
2021-05-24 20:44:02 S 14 46 35.362 -22 48 03.20 – V C57
2021-05-24 20:44:02 s 1 -188791.35 7 +109047.43 640.0 – C57
2021-05-24 20:54:02 S 14 46 34.193 -22 47 55.14 – V C57
2021-05-24 20:54:02 s 1 -188667.11 7 +108218.56 6830.0 – C57
2021-05-24 21:04:02 S 14 46 33.286 -22 48 00.54 – V C57
2021-05-24 21:04:02 s 1 -188540.41 6 +107388.28 6770.0 – 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)