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
2021-04-05 08:04:04 S 12 13 56.887 -23 37 39.22 V C57
2021-04-05 08:04:04 s 1 +138622.90 5 +273460.77 3720.0 C57
2021-04-05 08:14:04 S 12 13 56.143 -23 37 33.13 V C57
2021-04-05 08:14:04 s 1 +138359.39 9 +273963.13 8000.0 C57
2021-04-05 08:24:04 S 12 13 55.572 -23 37 26.62 V C57
2021-04-05 08:24:04 s 1 +138095.21 5 +274464.16 870.0 C57
2021-04-05 08:34:04 S 12 13 54.835 -23 37 20.39 V C57
2021-04-05 08:34:04 s 1 +137830.35 7 +274963.84 2350.0 C57
2021-04-05 08:44:04 S 12 13 54.125 -23 37 14.27 V C57
2021-04-05 08:44:04 s 1 +137564.82 8 +275462.19 2440.0 C57
2021-04-05 08:54:04 S 12 13 53.491 -23 37 07.86 V C57
2021-04-05 08:54:04 s 1 +137298.63 1 +275959.20 1160.0 C57
2021-04-05 09:04:04 S 12 13 52.750 -23 37 00.98 V C57
2021-04-05 09:04:04 s 1 +137031.77 1 +276454.88 8500.0 C57
2021-04-05 09:14:04 S 12 13 52.073 -23 36 55.51 V C57
2021-04-05 09:14:04 s 1 +136764.25 0 +276949.22 4470.0 C57
2021-04-05 09:24:04 S 12 13 51.360 -23 36 48.92 V C57
2021-04-05 09:24:04 s 1 +136496.07 1 +277442.24 9080.0 C57
2021-04-05 09:34:04 S 12 13 50.734 -23 36 42.16 V C57
2021-04-05 09:34:04 s 1 +136227.23 8 +277933.92 2340.0 C57
2021-04-05 09:44:04 S 12 13 49.985 -23 36 35.03 V C57
2021-04-05 09:44:04 s 1 +135957.75 4 +278424.28 4250.0 C57
2021-04-05 09:54:04 S 12 13 49.303 -23 36 28.48 V C57
2021-04-05 09:54:04 s 1 +135687.62 3 +278913.32 4810.0 C57
2021-04-05 10:04:04 S 12 13 48.619 -23 36 23.18 V C57
2021-04-05 10:04:04 s 1 +135416.84 8 +279401.03 4050.0 C57
2021-04-05 10:14:04 S 12 13 47.926 -23 36 16.06 V C57
2021-04-05 10:14:04 s 1 +135145.43 1 +279887.42 1950.0 C57
2021-04-05 10:24:04 S 12 13 47.285 -23 36 10.48 V C57
2021-04-05 10:24:04 s 1 +134873.37 6 +280372.49 8540.0 C57
2021-04-05 10:34:04 S 12 13 46.543 -23 36 02.34 V C57
2021-04-05 10:34:04 s 1 +134600.68 7 +280856.24 3800.0 C57
2021-04-05 10:44:04 S 12 13 45.931 -23 35 57.37 V C57
2021-04-05 10:44:04 s 1 +134327.36 6 +281338.67 7760.0 C57
2021-04-05 10:54:04 S 12 13 45.146 -23 35 51.00 V C57
2021-04-05 10:54:04 s 1 +134053.41 6 +281819.79 420.0 C57
2021-04-05 11:04:04 S 12 13 44.498 -23 35 43.12 V C57
2021-04-05 11:04:04 s 1 +133778.84 1 +282299.59 1780.0 C57
2021-04-05 11:14:04 S 12 13 43.810 -23 35 36.92 V C57
2021-04-05 11:14:04 s 1 +133503.64 5 +282778.09 1850.0 C57
2021-04-05 11:24:04 S 12 13 43.058 -23 35 30.95 V C57
2021-04-05 11:24:04 s 1 +133227.82 9 +283255.27 630.0 C57
2021-04-05 11:34:04 S 12 13 42.437 -23 35 24.90 V C57
2021-04-05 11:34:04 s 1 +132951.39 7 +283731.15 8140.0 C57
2021-04-05 11:44:04 S 12 13 41.724 -23 35 17.81 V C57
2021-04-05 11:44:04 s 1 +132674.35 2 +284205.71 4380.0 C57
2021-04-05 11:54:04 S 12 13 41.033 -23 35 11.80 V C57
2021-04-05 11:54:04 s 1 +132396.69 8 +284678.98 9350.0 C57
2021-04-05 12:04:04 S 12 13 40.356 -23 35 05.39 V C57
2021-04-05 12:04:04 s 1 +132118.43 6 +285150.94 3060.0 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)