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 12:14:04 S 12 13 39.660 -23 34 59.45 V C57
2021-04-05 12:14:04 s 1 +131839.57 1 +285621.59 5510.0 C57
2021-04-05 12:24:04 S 12 13 38.969 -23 34 52.86 V C57
2021-04-05 12:24:04 s 1 +131560.10 5 +286090.95 6720.0 C57
2021-04-05 12:34:04 S 12 13 38.335 -23 34 46.49 V C57
2021-04-05 12:34:04 s 1 +131280.04 2 +286559.01 6690.0 C57
2021-04-05 12:44:04 S 12 13 37.613 -23 34 40.19 V C57
2021-04-05 12:44:04 s 1 +130999.38 3 +287025.77 5420.0 C57
2021-04-05 12:54:04 S 12 13 36.878 -23 34 33.78 V C57
2021-04-05 12:54:04 s 1 +130718.19 7 +287491.02 2810.0 C57
2021-04-05 13:04:04 S 12 13 36.218 -23 34 27.30 V C57
2021-04-05 13:04:04 s 1 +130439.20 9 +287945.55 3920.0 C57
2021-04-05 13:24:04 S 12 13 34.850 -23 34 14.38 V C57
2021-04-05 13:24:04 s 1 +129873.61 0 +288870.55 3180.0 C57
2021-04-05 13:34:04 S 12 13 34.212 -23 34 07.72 V C57
2021-04-05 13:34:04 s 1 +129590.01 6 +289330.86 5860.0 C57
2021-04-05 13:44:04 S 12 13 33.420 -23 34 00.70 V C57
2021-04-05 13:44:04 s 1 +129305.84 4 +289789.88 7340.0 C57
2021-04-05 13:54:04 S 12 13 32.767 -23 33 54.68 V C57
2021-04-05 13:54:04 s 1 +129021.09 8 +290247.61 7620.0 C57
2021-04-05 14:04:04 S 12 13 32.110 -23 33 48.13 V C57
2021-04-05 14:04:04 s 1 +128735.78 1 +290704.06 6710.0 C57
2021-04-05 14:14:04 S 12 13 31.442 -23 33 41.69 V C57
2021-04-05 14:14:04 s 1 +128449.89 5 +291159.23 4620.0 C57
2021-04-05 14:24:04 S 12 13 30.696 -23 33 36.04 V C57
2021-04-05 14:24:04 s 1 +128163.44 3 +291613.11 1350.0 C57
2021-04-05 14:34:04 S 12 13 30.010 -23 33 28.94 V C57
2021-04-05 14:34:04 s 1 +127876.42 8 +292065.72 6910.0 C57
2021-04-05 14:44:04 S 12 13 29.376 -23 33 23.08 V C57
2021-04-05 14:44:04 s 1 +127588.85 2 +292517.04 1300.0 C57
2021-04-05 14:54:04 S 12 13 28.682 -23 33 15.77 V C57
2021-04-05 14:54:04 s 1 +127300.71 9 +292967.09 4530.0 C57
2021-04-05 15:04:04 S 12 13 28.015 -23 33 09.14 V C57
2021-04-05 15:04:04 s 1 +127012.03 1 +293415.87 6600.0 C57
2021-04-05 15:14:04 S 12 13 27.274 -23 33 03.31 V C57
2021-04-05 15:14:04 s 1 +126722.79 2 +293863.37 7530.0 C57
2021-04-05 15:24:04 S 12 13 26.570 -23 32 56.26 V C57
2021-04-05 15:24:04 s 1 +126433.00 3 +294309.59 7310.0 C57
2021-04-05 15:34:04 S 12 13 25.910 -23 32 50.82 V C57
2021-04-05 15:34:04 s 1 +126142.66 8 +294754.55 5950.0 C57
2021-04-05 15:44:04 S 12 13 25.152 -23 32 43.98 V C57
2021-04-05 15:44:04 s 1 +125851.78 8 +295198.24 3450.0 C57
2021-04-05 15:54:04 S 12 13 24.535 -23 32 37.10 V C57
2021-04-05 15:54:04 s 1 +125560.36 8 +295640.65 9830.0 C57
2021-04-05 16:04:04 S 12 13 23.858 -23 32 31.24 V C57
2021-04-05 16:04:04 s 1 +125268.41 0 +296081.81 5080.0 C57
2021-04-05 16:14:04 S 12 13 23.141 -23 32 24.32 V C57
2021-04-05 16:14:04 s 1 +124975.91 5 +296521.69 9220.0 C57
2021-04-05 16:24:04 S 12 13 22.459 -23 32 19.36 V C57
2021-04-05 16:24:04 s 1 +124682.88 8 +296960.32 2250.0 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)