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
2021-05-23 18:34:02 S 14 48 57.960 -22 44 46.97 – V C57
2021-05-23 18:34:02 s 1 -185333.76 0 +221939.54 4900.0 – C57
2021-05-23 18:44:02 S 14 48 57.235 -22 44 46.82 – V C57
2021-05-23 18:44:02 s 1 -185465.25 4 +221324.68 9600.0 – C57
2021-05-23 19:34:02 S 14 48 52.474 -22 44 52.62 – V C57
2021-05-23 19:34:02 s 1 -186106.54 2 +218231.37 770.0 – C57
2021-05-23 20:24:02 S 14 48 48.221 -22 45 01.87 – V C57
2021-05-23 20:24:02 s 1 -186720.41 1 +215106.19 260.0 – C57
2021-05-23 20:44:02 S 14 48 46.382 -22 44 58.52 – V C57
2021-05-23 20:44:02 s 1 -186958.14 0 +213847.16 3630.0 – C57
2021-05-23 20:54:02 S 14 48 45.077 -22 45 06.73 – V C57
2021-05-23 20:54:02 s 1 -187075.30 9 +213215.72 890.0 – C57
2021-05-23 21:24:02 S 14 48 42.888 -22 45 10.80 – V C57
2021-05-23 21:24:02 s 1 -187419.96 7 +211313.68 4780.0 – C57
2021-05-23 21:34:02 S 14 48 41.705 -22 45 11.09 – V C57
2021-05-23 21:34:02 s 1 -187532.55 3 +210677.09 80.0 – C57
2021-05-23 22:44:02 S 14 48 35.712 -22 45 19.98 – V C57
2021-05-23 22:44:02 s 1 -188287.90 0 +206184.73 1740.0 – C57
2021-05-23 23:24:02 S 14 48 32.153 -22 45 21.85 – V C57
2021-05-23 23:24:02 s 1 -188693.30 4 +203589.07 5780.0 – C57
2021-05-23 23:34:02 S 14 48 30.641 -22 45 22.72 – V C57
2021-05-23 23:34:02 s 1 -188791.61 8 +202936.90 3890.0 – C57
2021-05-24 00:14:02 S 14 48 27.350 -22 45 30.31 – V C57
2021-05-24 00:14:02 s 1 -189172.55 5 +200315.10 4230.0 – C57
2021-05-24 00:24:02 S 14 48 26.467 -22 45 28.26 – V C57
2021-05-24 00:24:02 s 1 -189264.68 0 +199656.37 6220.0 – C57
2021-05-24 02:34:02 S 14 48 14.825 -22 45 45.11 – V C57
2021-05-24 02:34:02 s 1 -190345.79 1 +190972.71 9330.0 – C57
2021-05-24 02:44:02 S 14 48 13.634 -22 45 45.18 – V C57
2021-05-24 02:44:02 s 1 -190419.77 1 +190295.44 4190.0 – C57
2021-05-24 03:14:02 S 14 48 10.812 -22 45 54.22 – V C57
2021-05-24 03:14:02 s 1 -190633.62 0 +188255.64 7760.0 – C57
2021-05-24 03:34:02 S 14 48 09.046 -22 45 54.90 – V C57
2021-05-24 03:34:02 s 1 -190769.37 6 +186889.07 5820.0 – C57
2021-05-24 03:44:02 S 14 48 08.503 -22 45 55.40 – V C57
2021-05-24 03:44:02 s 1 -190835.19 1 +186203.78 9500.0 – C57
2021-05-24 03:54:02 S 14 48 07.486 -22 45 58.54 – V C57
2021-05-24 03:54:02 s 1 -190899.62 2 +185517.14 9590.0 – C57
2021-05-24 04:04:02 S 14 48 06.305 -22 45 58.64 – V C57
2021-05-24 04:04:02 s 1 -190962.66 1 +184829.17 6080.0 – C57
2021-05-24 04:14:02 S 14 48 05.575 -22 46 00.37 – V C57
2021-05-24 04:14:02 s 1 -191024.30 1 +184139.84 8940.0 – C57
2021-05-24 04:24:02 S 14 48 04.234 -22 46 01.92 – V C57
2021-05-24 04:24:02 s 1 -191084.53 7 +183449.17 8160.0 – C57
2021-05-24 04:34:02 S 14 48 03.677 -22 46 02.24 – V C57
2021-05-24 04:34:02 s 1 -191143.35 9 +182757.15 3730.0 – C57
2021-05-24 04:44:02 S 14 48 02.856 -22 46 05.20 – V C57
2021-05-24 04:44:02 s 1 -191200.76 2 +182063.78 5620.0 – C57
2021-05-24 04:54:02 S 14 48 01.886 -22 46 07.36 – V C57
2021-05-24 04:54:02 s 1 -191256.73 8 +181369.07 3810.0 – 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)