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
2024-04-14 04:37:30 C 09 25 46.412 +42 13 52.82 V G96
2024-04-14 04:45:39 C 09 25 48.158 +42 13 30.58 V G96
2024-04-14 04:53:48 C 09 25 49.901 +42 13 08.18 V G96
2024-04-14 05:01:57 C 09 25 51.668 +42 12 45.94 V G96
2024-04-14 16:28:45 B 09 28 21.69 +41 41 45.1 Z O41
2024-04-14 16:45:27 B 09 28 25.21 +41 40 59.2 Z O41
2024-04-14 17:02:49 B 09 28 28.84 +41 40 11.5 Z O41
2024-04-15 02:48:28 C 09 30 36.277 +41 13 49.37 V G96
2024-04-15 02:56:44 C 09 30 37.991 +41 13 27.16 V G96
2024-04-15 03:04:59 C 09 30 39.676 +41 13 04.98 V G96
2024-04-15 03:13:13 C 09 30 41.368 +41 12 42.73 V G96
2024-04-15 04:40:00 C 09 30 59.180 +41 08 47.98 V 703
2024-04-15 04:43:05 C 09 30 59.792 +41 08 39.66 V 703
2024-04-15 04:46:07 C 09 31 00.404 +41 08 31.42 V 703
2024-04-15 04:49:10 C 09 31 01.013 +41 08 23.06 V 703
2024-04-18 07:27:36 C 09 45 45.137 +37 50 26.09 V T05
2024-04-18 07:43:22 C 09 45 47.938 +37 49 44.40 V T05
2024-04-18 07:48:50 C 09 45 48.917 +37 49 30.36 V T05
2024-04-18 07:58:24 C 09 45 50.594 +37 49 05.41 V T05
2024-04-21 08:06:45 C 09 58 19.834 +34 45 09.00 V T05
2024-04-21 08:07:24 C 09 58 19.963 +34 45 07.38 V T05
2024-04-21 08:12:01 C 09 58 20.662 +34 44 55.50 V T05
2024-04-21 08:12:40 C 09 58 20.782 +34 44 54.56 V T05
2024-04-21 08:21:51 C 09 58 22.205 +34 44 30.88 V T05
2024-04-21 08:38:37 C 09 58 24.818 +34 43 48.61 V T05
2024-04-22 05:07:53 C 10 01 42.031 +33 53 03.52 V G96
2024-04-22 05:14:45 C 10 01 43.064 +33 52 46.42 V G96
2024-04-22 05:21:36 C 10 01 44.112 +33 52 29.50 V G96
2024-04-22 05:28:29 C 10 01 45.160 +33 52 12.43 V G96
2024-04-22 07:18:03 C 10 02 02.765 +33 47 48.35 X F52
2024-04-22 07:30:41 C 10 02 04.660 +33 47 17.33 X F52
2024-04-22 07:35:38 C 10 02 04.736 +33 46 57.36 V 703
2024-04-22 07:38:37 C 10 02 05.208 +33 46 50.05 V 703
2024-04-22 07:41:36 C 10 02 05.644 +33 46 42.35 V 703
2024-04-22 07:43:09 C 10 02 06.549 +33 46 46.65 X F52
2024-04-22 07:44:36 C 10 02 06.126 +33 46 35.65 V 703
2024-04-22 08:02:46 C 10 02 09.497 +33 45 57.89 V T05
2024-04-22 08:26:06 C 10 02 13.061 +33 45 00.83 V T05
2024-04-22 08:30:40 C 10 02 13.754 +33 44 49.42 V T05
2024-04-22 08:39:11 C 10 02 15.007 +33 44 28.07 V T05
2024-04-24 10:26:03 C 10 09 45.957 +31 44 32.30 X F51
2024-04-24 10:40:05 C 10 09 47.976 +31 43 58.48 X F51
2024-04-24 10:54:09 C 10 09 49.983 +31 43 24.69 X F51
2024-04-25 09:10:16 C 10 13 01.858 +30 51 16.38 V T05
2024-04-25 09:14:49 C 10 13 02.530 +30 51 05.26 V T05
2024-04-25 10:36:59 C 10 13 13.728 +30 47 52.08 V T05
2024-04-25 10:47:36 C 10 13 15.250 +30 47 27.10 V T05
2024-04-26 05:20:13 C 10 15 50.609 +30 04 43.93 V 703
2024-04-26 05:23:33 C 10 15 50.980 +30 04 36.08 V 703
2024-04-26 05:30:13 C 10 15 51.919 +30 04 21.00 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)