1685 Toro (1948 OA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4360488078 ± 2.00e+00
Semi-major axis (a)1.3678386612 AU ± 3.00e+00
Inclination (i)9.38187768° ± 4.00e+00
Long. of Asc. Node (Ω)274.20776988° ± 5.00e+00
Arg. of Perihelion (ω)127.27529930° ± 6.00e+00
Mean Anomaly (M)82.68165968° ± 4.14e-05
Mean Motion (n)0.6161124207°/day ± 2.03e+00
Perihelion dist (q)0.77139424 AU ± 3.22e+00
Aphelion dist (Q)1.96428308 AU ± 5.10e+00
Orbital Period1.59975071 yr ± 5.26e+00
NGA Modelr2
A2-1.51758492e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.27
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.224″
Uncertainty0
Orbit TypeApollo
MOID0.051090 AU
Observations Used5208
Radar Obs Used7
Gaia Obs Used139
Oppositions26
Arc Total1948-2017
First Observation Used1948-07-17
Last Observation Used2026-04-01
Observations (6030)
Date Type RA Dec Mag Band Observatory
2021-04-03 05:44:04 S 12 17 20.573 -24 10 25.43 V C57
2021-04-03 05:44:04 s 1 +158380.15 1 +50896.561 610.0 C57
2021-04-03 05:54:04 S 12 17 20.016 -24 10 19.63 V C57
2021-04-03 05:54:04 s 1 +158687.28 3 +51889.235 6340.0 C57
2021-04-03 06:04:04 S 12 17 19.296 -24 10 13.19 V C57
2021-04-03 06:04:04 s 1 +158989.76 8 +52880.392 2920.0 C57
2021-04-03 06:14:04 S 12 17 18.674 -24 10 06.49 V C57
2021-04-03 06:14:04 s 1 +159287.64 5 +53870.021 420.0 C57
2021-04-03 06:24:04 S 12 17 17.856 -24 09 59.54 V C57
2021-04-03 06:24:04 s 1 +159580.95 5 +54858.109 8920.0 C57
2021-04-03 06:34:04 S 12 17 17.376 -24 09 52.85 V C57
2021-04-03 06:34:04 s 1 +159869.73 6 +55844.645 8500.0 C57
2021-04-03 06:44:04 S 12 17 16.642 -24 09 45.40 V C57
2021-04-03 06:44:04 s 1 +160154.02 7 +56829.616 9240.0 C57
2021-04-03 06:54:04 S 12 17 16.022 -24 09 39.24 V C57
2021-04-03 06:54:04 s 1 +160433.86 7 +57813.012 1190.0 C57
2021-04-03 07:04:04 S 12 17 15.367 -24 09 32.00 V C57
2021-04-03 07:04:04 s 1 +160709.29 4 +58794.821 4450.0 C57
2021-04-03 07:14:04 S 12 17 14.734 -24 09 24.30 V C57
2021-04-03 07:14:04 s 1 +160980.34 5 +59775.033 9090.0 C57
2021-04-03 07:24:04 S 12 17 13.992 -24 09 17.28 V C57
2021-04-03 07:24:04 s 1 +161247.05 8 +60753.639 5170.0 C57
2021-04-03 07:34:04 S 12 17 13.284 -24 09 10.55 V C57
2021-04-03 07:34:04 s 1 +161509.46 9 +61730.627 2760.0 C57
2021-04-03 07:44:04 S 12 17 12.670 -24 09 05.47 V C57
2021-04-03 07:44:04 s 1 +161767.61 5 +62705.990 1940.0 C57
2021-04-03 07:54:04 S 12 17 12.005 -24 08 58.88 V C57
2021-04-03 07:54:04 s 1 +162021.53 2 +63679.717 2790.0 C57
2021-04-03 08:04:04 S 12 17 11.340 -24 08 52.26 V C57
2021-04-03 08:04:04 s 1 +162271.25 5 +64651.799 5350.0 C57
2021-04-03 08:14:04 S 12 17 10.711 -24 08 44.30 V C57
2021-04-03 08:14:04 s 1 +162516.82 0 +65622.229 9720.0 C57
2021-04-03 08:24:04 S 12 17 10.037 -24 08 38.04 V C57
2021-04-03 08:24:04 s 1 +162758.26 1 +66590.998 5940.0 C57
2021-04-03 08:34:04 S 12 17 09.485 -24 08 30.44 V C57
2021-04-03 08:34:04 s 1 +162995.61 4 +67558.097 4100.0 C57
2021-04-03 08:44:04 S 12 17 08.616 -24 08 24.00 V C57
2021-04-03 08:44:04 s 1 +163228.91 2 +68523.520 4250.0 C57
2021-04-03 08:54:04 S 12 17 08.047 -24 08 18.02 V C57
2021-04-03 08:54:04 s 1 +163458.18 8 +69487.259 6460.0 C57
2021-04-03 09:04:04 S 12 17 07.368 -24 08 11.33 V C57
2021-04-03 09:04:04 s 1 +163683.47 8 +70449.307 800.0 C57
2021-04-03 09:14:04 S 12 17 06.770 -24 08 05.10 V C57
2021-04-03 09:14:04 s 1 +163904.81 3 +71409.656 7330.0 C57
2021-04-03 09:24:04 S 12 17 06.082 -24 07 58.62 V C57
2021-04-03 09:24:04 s 1 +164122.22 6 +72368.301 6120.0 C57
2021-04-03 09:34:04 S 12 17 05.407 -24 07 50.95 V C57
2021-04-03 09:34:04 s 1 +164335.74 9 +73325.234 7220.0 C57
2021-04-03 09:44:04 S 12 17 04.742 -24 07 45.12 V C57
2021-04-03 09:44:04 s 1 +164545.41 6 +74280.451 700.0 C57
Radar Observations (16)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1980-07-22 07:00:00 161393.5 3.7 Hz 2380 -1 -1
1980-07-22.291667 16139350 20 Hz 2380 251 251
1988-07-21 07:30:00 151627.5 3 Hz 2380 -1 -1
1988-07-21.312500 15162750 300 Hz 2380 251 251
1988-07-22 07:34:00 218310206 20 us 2380 -1 -1
1988-07-22.315278 21831020600 20000 us 2380 251 251
1988-07-23 07:20:00 213324675 20 us 2380 -1 -1
1988-07-23.305556 21332467500 20000 us 2380 251 251
1988-07-24 07:35:00 208567250 20 us 2380 -1 -1
1988-07-24.315972 20856725000 20000 us 2380 251 251
1988-07-25 07:42:00 204181567 20 us 2380 -1 -1
1988-07-25.320833 20418156700 20000 us 2380 251 251
2012-07-22 08:55:00 309089493.95 8 us 2380 -1 -1
2012-07-22.371528 30908949395 8000 us 2380 251 251
2016-01-19 04:00:00 158933637 10 us 8660 -14 -14
2016-01-22 01:20:00 156224108 5 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)