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 21:44:02 S 14 46 29.273 -22 48 02.30 – V C57
2021-05-24 21:44:02 s 1 -188008.69 7 +104053.08 3230.0 – C57
2021-05-24 22:04:02 S 14 46 27.547 -22 48 04.72 – V C57
2021-05-24 22:04:02 s 1 -187727.66 5 +102377.04 2940.0 – C57
2021-05-24 22:44:02 S 14 46 24.156 -22 48 11.48 – V C57
2021-05-24 22:44:02 s 1 -187134.59 9 +99008.173 3730.0 – C57
2021-05-24 23:04:02 S 14 46 22.164 -22 48 15.34 – V C57
2021-05-24 23:04:02 s 1 -186822.29 9 +97315.356 4140.0 – C57
2021-05-24 23:14:02 S 14 46 21.101 -22 48 11.59 – V C57
2021-05-24 23:14:02 s 1 -186662.14 7 +96466.858 9210.0 – C57
2021-05-24 23:24:02 S 14 46 20.410 -22 48 15.48 – V C57
2021-05-24 23:24:02 s 1 -186499.30 4 +95616.969 7460.0 – C57
2021-05-24 23:44:02 S 14 46 18.358 -22 48 20.09 – V C57
2021-05-24 23:44:02 s 1 -186165.47 4 +93913.030 3340.0 – C57
2021-05-24 23:54:02 S 14 46 17.407 -22 48 16.78 – V C57
2021-05-24 23:54:02 s 1 -185994.45 1 +93058.982 880.0 – C57
2021-05-25 00:14:02 S 14 46 15.175 -22 48 20.70 – V C57
2021-05-25 00:14:02 s 1 -185644.10 0 +91346.744 4950.0 – C57
2021-05-25 00:24:02 S 14 46 14.623 -22 48 19.58 – V C57
2021-05-25 00:24:02 s 1 -185464.73 5 +90488.558 1380.0 – C57
2021-05-25 00:34:02 S 14 46 13.745 -22 48 21.35 – V C57
2021-05-25 00:34:02 s 1 -185282.55 3 +89628.997 690.0 – C57
2021-05-25 00:44:02 S 14 46 12.689 -22 48 28.12 – V C57
2021-05-25 00:44:02 s 1 -185097.53 3 +88768.063 2820.0 – C57
2021-05-25 00:54:02 S 14 46 11.712 -22 48 23.47 – V C57
2021-05-25 00:54:02 s 1 -184909.65 9 +87905.761 7740.0 – C57
2021-05-25 01:04:02 S 14 46 11.038 -22 48 27.65 – V C57
2021-05-25 01:04:02 s 1 -184718.90 9 +87042.091 5390.0 – C57
2021-05-25 01:24:02 S 14 46 08.969 -22 48 28.58 – V C57
2021-05-25 01:24:02 s 1 -184328.71 0 +85310.662 8710.0 – C57
2021-05-25 01:34:02 S 14 46 08.282 -22 48 26.35 – V C57
2021-05-25 01:34:02 s 1 -184129.22 1 +84442.910 4280.0 – C57
2021-05-25 01:44:02 S 14 46 07.075 -22 48 24.88 – V C57
2021-05-25 01:44:02 s 1 -183926.77 9 +83573.802 2400.0 – C57
2021-05-25 01:54:02 S 14 46 06.206 -22 48 26.10 – V C57
2021-05-25 01:54:02 s 1 -183721.36 4 +82703.343 3010.0 – C57
2021-05-25 02:14:02 S 14 46 04.498 -22 48 29.81 – V C57
2021-05-25 02:14:02 s 1 -183301.53 5 +80958.385 1530.0 – C57
2021-05-25 02:24:02 S 14 46 03.574 -22 48 33.05 – V C57
2021-05-25 02:24:02 s 1 -183087.08 0 +80083.893 9330.0 – C57
2021-05-25 02:44:02 S 14 46 01.654 -22 48 36.61 – V C57
2021-05-25 02:44:02 s 1 -182648.98 5 +78330.902 1780.0 – C57
2021-05-25 02:54:02 S 14 46 00.631 -22 48 33.41 – V C57
2021-05-25 02:54:02 s 1 -182425.30 3 +77452.410 6320.0 – C57
2021-05-25 03:04:02 S 14 45 59.395 -22 48 32.08 – V C57
2021-05-25 03:04:02 s 1 -182198.50 2 +76572.593 3010.0 – C57
2021-05-25 03:14:02 S 14 45 58.735 -22 48 37.01 – V C57
2021-05-25 03:14:02 s 1 -181968.56 2 +75691.456 1780.0 – C57
2021-05-25 03:24:02 S 14 45 57.902 -22 48 44.71 – V C57
2021-05-25 03:24:02 s 1 -181735.46 0 +74809.002 2590.0 – 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)