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
2021-04-04 23:14:04 S 12 14 33.288 -23 43 20.03 V C57
2021-04-04 23:14:04 s 1 +151522.07 8 +244868.81 9890.0 C57
2021-04-04 23:24:04 S 12 14 32.616 -23 43 14.02 V C57
2021-04-04 23:24:04 s 1 +151299.91 8 +245444.89 9190.0 C57
2021-04-04 23:34:04 S 12 14 31.903 -23 43 06.64 V C57
2021-04-04 23:34:04 s 1 +151076.86 7 +246019.54 6670.0 C57
2021-04-04 23:44:04 S 12 14 31.255 -23 43 00.84 V C57
2021-04-04 23:44:04 s 1 +150852.93 2 +246592.74 2340.0 C57
2021-04-04 23:54:04 S 12 14 30.487 -23 42 53.78 V C57
2021-04-04 23:54:04 s 1 +150628.11 6 +247164.50 6210.0 C57
2021-04-05 00:04:04 S 12 14 29.830 -23 42 48.71 V C57
2021-04-05 00:04:04 s 1 +150402.42 5 +247734.83 8280.0 C57
2021-04-05 00:14:04 S 12 14 29.088 -23 42 40.39 V C57
2021-04-05 00:14:04 s 1 +150175.86 2 +248303.73 8570.0 C57
2021-04-05 00:24:04 S 12 14 28.438 -23 42 34.45 V C57
2021-04-05 00:24:04 s 1 +149948.43 2 +248871.19 7080.0 C57
2021-04-05 00:34:04 S 12 14 27.792 -23 42 28.94 V C57
2021-04-05 00:34:04 s 1 +149720.14 0 +249437.23 3820.0 C57
2021-04-05 00:44:04 S 12 14 27.067 -23 42 21.78 V C57
2021-04-05 00:44:04 s 1 +149490.99 1 +250001.83 8810.0 C57
2021-04-05 00:54:04 S 12 14 26.369 -23 42 16.78 V C57
2021-04-05 00:54:04 s 1 +149260.98 8 +250565.01 2050.0 C57
2021-04-05 01:04:04 S 12 14 25.716 -23 42 08.78 V C57
2021-04-05 01:04:04 s 1 +149030.13 7 +251126.77 3540.0 C57
2021-04-05 01:14:04 S 12 14 25.056 -23 42 03.02 V C57
2021-04-05 01:14:04 s 1 +148798.44 1 +251687.10 3310.0 C57
2021-04-05 01:24:04 S 12 14 24.394 -23 41 56.94 V C57
2021-04-05 01:24:04 s 1 +148565.90 5 +252246.01 1350.0 C57
2021-04-05 01:34:04 S 12 14 23.642 -23 41 49.81 V C57
2021-04-05 01:34:04 s 1 +148332.53 4 +252803.51 7680.0 C57
2021-04-05 01:44:04 S 12 14 23.002 -23 41 44.05 V C57
2021-04-05 01:44:04 s 1 +148098.33 1 +253359.59 2300.0 C57
2021-04-05 01:54:04 S 12 14 22.298 -23 41 37.10 V C57
2021-04-05 01:54:04 s 1 +147863.30 2 +253914.26 5220.0 C57
2021-04-05 02:04:04 S 12 14 21.682 -23 41 31.13 V C57
2021-04-05 02:04:04 s 1 +147627.44 9 +254467.51 6460.0 C57
2021-04-05 02:14:04 S 12 14 20.933 -23 41 23.89 V C57
2021-04-05 02:14:04 s 1 +147390.77 8 +255019.36 6010.0 C57
2021-04-05 02:24:04 S 12 14 20.242 -23 41 17.88 V C57
2021-04-05 02:24:04 s 1 +147153.29 3 +255569.80 3900.0 C57
2021-04-05 02:34:04 S 12 14 19.553 -23 41 11.62 V C57
2021-04-05 02:34:04 s 1 +146914.99 8 +256118.83 120.0 C57
2021-04-05 02:44:04 S 12 14 18.883 -23 41 05.10 V C57
2021-04-05 02:44:04 s 1 +146675.89 7 +256666.46 4680.0 C57
2021-04-05 02:54:04 S 12 14 18.204 -23 40 59.48 V C57
2021-04-05 02:54:04 s 1 +146435.99 4 +257212.68 7600.0 C57
2021-04-05 03:04:04 S 12 14 17.470 -23 40 51.71 V C57
2021-04-05 03:04:04 s 1 +146195.29 4 +257757.51 8870.0 C57
2021-04-05 03:14:04 S 12 14 16.805 -23 40 45.52 V C57
2021-04-05 03:14:04 s 1 +145953.80 0 +258300.94 8520.0 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)