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
2024-04-26 08:36:39 C 10 16 17.390 +29 57 17.96 V T05
2024-04-26 08:41:13 C 10 16 18.002 +29 57 07.27 V T05
2024-04-26 08:49:01 C 10 16 19.027 +29 56 49.88 V T05
2024-04-26 09:03:22 C 10 16 20.950 +29 56 16.30 V T05
2024-04-28 05:45:42 C 10 22 17.332 +28 16 01.13 V 703
2024-04-28 05:49:03 C 10 22 17.756 +28 15 53.57 V 703
2024-04-28 05:52:23 C 10 22 18.142 +28 15 45.94 V 703
2024-04-28 05:55:43 C 10 22 18.548 +28 15 38.23 V 703
2024-04-29 06:15:12 C 10 25 24.193 +27 22 37.20 V 703
2024-04-29 06:18:28 C 10 25 24.571 +27 22 30.22 V 703
2024-04-29 06:21:44 C 10 25 24.956 +27 22 22.66 V 703
2024-04-29 06:25:00 C 10 25 25.331 +27 22 15.49 V 703
2024-04-30 06:52:07 C 10 28 26.684 +26 30 01.08 V 703
2024-04-30 06:55:23 C 10 28 27.062 +26 29 54.28 V 703
2024-04-30 06:58:39 C 10 28 27.433 +26 29 47.11 V 703
2024-04-30 07:01:55 C 10 28 27.829 +26 29 40.27 V 703
2024-05-01 04:42:44 C 10 31 05.016 +25 44 16.69 V G96
2024-05-01 04:50:50 C 10 31 05.938 +25 43 59.81 V G96
2024-05-01 04:58:58 C 10 31 06.870 +25 43 42.85 V G96
2024-05-01 05:07:04 C 10 31 07.795 +25 43 26.00 V G96
2024-05-01 06:16:05 C 10 31 15.730 +25 41 01.57 V 703
2024-05-01 06:19:21 C 10 31 16.129 +25 40 54.80 V 703
2024-05-01 06:22:37 C 10 31 16.612 +25 40 48.61 V 703
2024-05-01 06:25:53 C 10 31 16.896 +25 40 41.99 V 703
2024-05-01 07:42:47 C 10 31 26.345 +25 38 07.26 V T08
2024-05-01 07:47:35 C 10 31 26.906 +25 37 57.14 V T08
2024-05-01 07:58:16 C 10 31 28.138 +25 37 34.90 V T08
2024-05-01 08:12:48 C 10 31 29.779 +25 37 04.62 V T08
2024-05-03 06:21:19 C 10 36 50.018 +24 03 15.59 V 703
2024-05-03 06:27:51 C 10 36 50.929 +24 03 03.24 V 703
2024-05-03 06:31:07 C 10 36 51.239 +24 02 57.44 V 703
2024-05-03 07:16:05 C 10 36 56.810 +24 01 32.48 V T05
2024-05-03 07:20:54 C 10 36 57.317 +24 01 23.02 V T05
2024-05-03 07:29:27 C 10 36 58.258 +24 01 05.84 V T05
2024-05-03 07:49:52 C 10 37 00.473 +24 00 25.02 V T05
2024-05-04 08:17:38 C 10 39 44.213 +23 12 14.22 V T05
2024-05-04 08:22:12 C 10 39 44.736 +23 12 05.40 V T05
2024-05-04 08:31:58 C 10 39 45.754 +23 11 46.25 V T05
2024-05-04 08:47:36 C 10 39 47.419 +23 11 15.61 V T05
2024-05-05 06:25:37 C 10 42 09.166 +22 29 26.63 V 703
2024-05-05 06:28:53 C 10 42 09.472 +22 29 19.79 V 703
2024-05-05 06:32:09 C 10 42 09.720 +22 29 13.52 V 703
2024-05-05 06:35:25 C 10 42 10.174 +22 29 07.51 V 703
2024-05-07 06:30:18 C 10 47 14.924 +20 59 20.83 V 703
2024-05-07 06:33:34 C 10 47 15.155 +20 59 13.16 V 703
2024-05-07 06:40:06 C 10 47 15.839 +20 59 01.14 V 703
2024-05-07 07:18:11 C 10 47 20.160 +20 57 55.37 V T05
2024-05-07 07:22:45 C 10 47 20.599 +20 57 47.02 V T05
2024-05-07 07:33:37 C 10 47 21.708 +20 57 26.93 V T05
2024-05-07 07:48:01 C 10 47 23.141 +20 57 00.22 V T05
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)