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 16:34:04 S 12 13 21.689 -23 32 12.30 V C57
2021-04-05 16:34:04 s 1 +124389.33 0 +297397.68 4160.0 C57
2021-04-05 16:44:04 S 12 13 21.053 -23 32 06.83 V C57
2021-04-05 16:44:04 s 1 +124095.24 4 +297833.78 4980.0 C57
2021-04-05 16:54:04 S 12 13 20.323 -23 31 59.70 V C57
2021-04-05 16:54:04 s 1 +123800.63 4 +298268.62 4700.0 C57
2021-04-05 17:04:04 S 12 13 19.690 -23 31 52.57 V C57
2021-04-05 17:04:04 s 1 +123505.50 0 +298702.21 3330.0 C57
2021-04-05 17:14:04 S 12 13 18.974 -23 31 47.10 V C57
2021-04-05 17:14:04 s 1 +123209.84 7 +299134.54 870.0 C57
2021-04-05 17:24:04 S 12 13 18.269 -23 31 39.86 V C57
2021-04-05 17:24:04 s 1 +122913.67 6 +299565.61 7330.0 C57
2021-04-05 17:34:04 S 12 13 17.630 -23 31 33.89 V C57
2021-04-05 17:34:04 s 1 +122616.99 1 +299995.43 2720.0 C57
2021-04-05 17:44:04 S 12 13 16.886 -23 31 27.19 V C57
2021-04-05 17:44:04 s 1 +122319.79 3 +300424.00 7030.0 C57
2021-04-05 17:54:04 S 12 13 16.277 -23 31 21.07 V C57
2021-04-05 17:54:04 s 1 +122022.08 6 +300851.32 280.0 C57
2021-04-05 18:04:04 S 12 13 15.530 -23 31 14.34 V C57
2021-04-05 18:04:04 s 1 +121723.87 2 +301277.39 2470.0 C57
2021-04-05 18:14:04 S 12 13 14.875 -23 31 07.39 V C57
2021-04-05 18:14:04 s 1 +121425.15 3 +301702.21 3610.0 C57
2021-04-05 18:24:04 S 12 13 14.148 -23 31 00.55 V C57
2021-04-05 18:24:04 s 1 +121125.93 1 +302125.78 3690.0 C57
2021-04-05 18:34:04 S 12 13 13.438 -23 30 53.89 V C57
2021-04-05 18:34:04 s 1 +120826.21 1 +302548.11 2730.0 C57
2021-04-05 18:44:04 S 12 13 12.756 -23 30 48.89 V C57
2021-04-05 18:44:04 s 1 +120525.99 3 +302969.20 730.0 C57
2021-04-05 18:54:04 S 12 13 12.050 -23 30 41.90 V C57
2021-04-05 18:54:04 s 1 +120225.28 0 +303389.05 7690.0 C57
2021-04-05 19:04:04 S 12 13 11.369 -23 30 35.96 V C57
2021-04-05 19:04:04 s 1 +119924.07 5 +303807.65 3620.0 C57
2021-04-05 19:14:04 S 12 13 10.663 -23 30 28.73 V C57
2021-04-05 19:14:04 s 1 +119622.38 1 +304225.02 8530.0 C57
2021-04-05 19:24:04 S 12 13 09.974 -23 30 22.79 V C57
2021-04-05 19:24:04 s 1 +119320.19 9 +304641.14 2420.0 C57
2021-04-05 19:34:04 S 12 13 09.322 -23 30 16.24 V C57
2021-04-05 19:34:04 s 1 +119017.53 2 +305056.03 5290.0 C57
2021-04-05 19:44:04 S 12 13 08.568 -23 30 11.05 V C57
2021-04-05 19:44:04 s 1 +118714.38 3 +305469.69 7150.0 C57
2021-04-05 19:54:04 S 12 13 07.944 -23 30 03.71 V C57
2021-04-05 19:54:04 s 1 +118410.75 4 +305882.11 8000.0 C57
2021-04-05 20:04:04 S 12 13 07.236 -23 29 57.23 V C57
2021-04-05 20:04:04 s 1 +118106.64 7 +306293.30 7850.0 C57
2021-04-05 20:14:04 S 12 13 06.528 -23 29 50.64 V C57
2021-04-05 20:14:04 s 1 +117802.06 5 +306703.26 6710.0 C57
2021-04-05 20:24:04 S 12 13 05.868 -23 29 44.41 V C57
2021-04-05 20:24:04 s 1 +117497.01 0 +307111.99 4570.0 C57
2021-04-05 20:34:04 S 12 13 05.162 -23 29 37.72 V C57
2021-04-05 20:34:04 s 1 +117191.48 4 +307519.49 1450.0 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)