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
2021-05-25 13:14:02 S 14 45 02.239 -22 49 29.28 V C57
2021-05-25 13:14:02 s 1 -161473.80 7 +20675.593 3370.0 C57
2021-05-25 13:24:02 S 14 45 01.008 -22 49 29.86 V C57
2021-05-25 13:24:02 s 1 -161002.11 3 +19729.779 8690.0 C57
2021-05-25 13:34:02 S 14 44 59.964 -22 49 34.57 V C57
2021-05-25 13:34:02 s 1 -160525.45 2 +18783.351 1730.0 C57
2021-05-25 14:14:02 S 14 44 56.462 -22 49 40.22 V C57
2021-05-25 14:14:02 s 1 -158568.34 7 +14991.957 9130.0 C57
2021-05-25 14:24:02 S 14 44 55.615 -22 49 36.88 V C57
2021-05-25 14:24:02 s 1 -158066.25 7 +14042.809 9340.0 C57
2021-05-25 14:34:02 S 14 44 54.655 -22 49 35.58 V C57
2021-05-25 14:34:02 s 1 -157558.96 0 +13093.193 6690.0 C57
2021-05-25 15:04:02 S 14 44 51.739 -22 49 43.32 V C57
2021-05-25 15:04:02 s 1 -156005.41 8 +10241.799 660.0 C57
2021-05-25 15:14:02 S 14 44 51.240 -22 49 40.55 V C57
2021-05-25 15:14:02 s 1 -155476.88 1 + 9290.578 5630.0 C57
2021-05-25 15:24:02 S 14 44 49.680 -22 49 45.16 V C57
2021-05-25 15:24:02 s 1 -154942.92 8 + 8339.027 7270.0 C57
2021-05-25 15:34:02 S 14 44 48.890 -22 49 38.10 V C57
2021-05-25 15:34:02 s 1 -154403.51 7 + 7387.175 5460.0 C57
2021-05-25 16:04:02 S 14 44 45.794 -22 49 41.99 V C57
2021-05-25 16:04:02 s 1 -152752.09 8 + 4530.125 8360.0 C57
2021-05-25 16:44:02 S 14 44 42.458 -22 49 47.42 V C57
2021-05-25 16:44:02 s 1 -150471.12 8 + 718.454 7840.0 C57
2021-05-25 17:04:02 S 14 44 40.094 -22 49 45.34 V C57
2021-05-25 17:04:02 s 1 -149295.94 2 - 1187.733 7380.0 C57
2021-05-25 17:34:02 S 14 44 37.442 -22 49 49.04 V C57
2021-05-25 17:34:02 s 1 -147488.75 0 - 4046.618 7790.0 C57
2021-05-31 10:14:35 C 14 34 37.69 -22 56 02.3 V T05
2021-05-31 10:19:14 C 14 34 37.35 -22 56 01.5 V T05
2021-05-31 10:34:50 C 14 34 36.33 -22 56 02.0 V T05
2021-05-31 10:44:48 C 14 34 35.68 -22 56 03.4 V T05
2021-06-02 08:34:19 C 14 31 49.60 -22 58 28.6 V T08
2021-06-02 08:39:37 C 14 31 49.28 -22 58 28.1 V T08
2021-06-02 08:48:54 C 14 31 48.63 -22 58 28.9 V T08
2021-06-06 08:31:16 C 14 26 49.33 -23 03 13.5 V T08
2021-06-06 08:36:35 C 14 26 49.02 -23 03 13.1 V T08
2021-06-06 08:44:33 C 14 26 48.60 -23 03 13.1 V T08
2021-06-06 09:03:08 C 14 26 47.79 -23 03 14.1 V T08
2021-06-07 05:19:41 C 14 25 52.74 -23 04 16.2 V 703
2021-06-07 05:27:39 C 14 25 52.41 -23 04 16.5 V 703
2021-06-07 05:35:38 C 14 25 51.99 -23 04 16.8 V 703
2021-06-07 05:43:36 C 14 25 51.64 -23 04 17.3 V 703
2021-06-08 08:18:24 C 14 24 43.91 -23 05 36.5 V T05
2021-06-08 08:23:02 C 14 24 43.68 -23 05 36.6 V T05
2021-06-08 08:32:17 C 14 24 43.28 -23 05 36.5 V T05
2021-06-08 08:46:48 C 14 24 42.62 -23 05 37.3 V T05
2021-06-11 06:03:07 C 14 22 08.56 -23 09 18.2 V 703
2021-06-11 06:10:50 C 14 22 08.33 -23 09 18.7 V 703
2021-06-11 06:18:33 C 14 22 07.99 -23 09 19.2 V 703
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)