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 13:44:04 S 12 16 48.838 -24 05 03.70 V C57
2021-04-03 13:44:04 s 1 +168497.83 9 +96678.172 9000.0 C57
2021-04-03 13:54:04 S 12 16 48.175 -24 04 58.80 V C57
2021-04-03 13:54:04 s 1 +168620.55 6 +97589.055 400.0 C57
2021-04-03 14:04:04 S 12 16 47.537 -24 04 50.66 V C57
2021-04-03 14:04:04 s 1 +168740.13 9 +98498.127 5600.0 C57
2021-04-03 14:14:04 S 12 16 46.942 -24 04 45.52 V C57
2021-04-03 14:14:04 s 1 +168856.61 4 +99405.388 4620.0 C57
2021-04-03 14:24:04 S 12 16 46.183 -24 04 38.14 V C57
2021-04-03 14:24:04 s 1 +168970.00 5 +100310.83 7530.0 C57
2021-04-03 14:34:04 S 12 16 45.626 -24 04 31.69 V C57
2021-04-03 14:34:04 s 1 +169080.33 4 +101214.47 4370.0 C57
2021-04-03 14:44:04 S 12 16 44.822 -24 04 25.03 V C57
2021-04-03 14:44:04 s 1 +169187.62 5 +102116.29 5180.0 C57
2021-04-03 14:54:04 S 12 16 44.225 -24 04 18.91 V C57
2021-04-03 14:54:04 s 1 +169291.90 2 +103016.29 10.0 C57
2021-04-03 15:04:04 S 12 16 43.538 -24 04 11.82 V C57
2021-04-03 15:04:04 s 1 +169393.18 7 +103914.48 8900.0 C57
2021-04-03 15:14:04 S 12 16 42.842 -24 04 05.34 V C57
2021-04-03 15:14:04 s 1 +169491.50 4 +104810.85 1910.0 C57
2021-04-03 15:24:04 S 12 16 42.206 -24 03 58.54 V C57
2021-04-03 15:24:04 s 1 +169586.87 4 +105705.40 9060.0 C57
2021-04-03 15:34:04 S 12 16 41.494 -24 03 51.98 V C57
2021-04-03 15:34:04 s 1 +169679.32 0 +106598.13 400.0 C57
2021-04-03 15:44:04 S 12 16 40.937 -24 03 46.58 V C57
2021-04-03 15:44:04 s 1 +169768.86 3 +107489.04 5990.0 C57
2021-04-03 15:54:04 S 12 16 40.207 -24 03 37.73 V C57
2021-04-03 15:54:04 s 1 +169855.52 7 +108378.13 5850.0 C57
2021-04-03 16:04:04 S 12 16 39.574 -24 03 33.48 V C57
2021-04-03 16:04:04 s 1 +169939.33 2 +109265.40 40.0 C57
2021-04-03 16:44:04 S 12 16 36.895 -24 03 05.51 V C57
2021-04-03 16:44:04 s 1 +170246.38 8 +112796.27 830.0 C57
2021-04-03 16:54:04 S 12 16 36.293 -24 03 00.43 V C57
2021-04-03 16:54:04 s 1 +170316.21 6 +113674.44 7250.0 C57
2021-04-03 17:04:04 S 12 16 35.551 -24 02 52.58 V C57
2021-04-03 17:04:04 s 1 +170383.31 0 +114550.78 8230.0 C57
2021-04-03 17:14:04 S 12 16 34.939 -24 02 45.24 V C57
2021-04-03 17:14:04 s 1 +170447.69 0 +115425.30 3810.0 C57
2021-04-03 17:24:04 S 12 16 34.200 -24 02 38.51 V C57
2021-04-03 17:24:04 s 1 +170509.37 7 +116298.00 4040.0 C57
2021-04-03 17:34:04 S 12 16 33.576 -24 02 33.00 V C57
2021-04-03 17:34:04 s 1 +170568.39 1 +117168.89 8950.0 C57
2021-04-03 17:44:04 S 12 16 32.873 -24 02 25.48 V C57
2021-04-03 17:44:04 s 1 +170624.75 0 +118037.95 8580.0 C57
2021-04-03 17:54:04 S 12 16 32.162 -24 02 19.50 V C57
2021-04-03 17:54:04 s 1 +170678.47 4 +118905.19 2980.0 C57
2021-04-03 18:04:04 S 12 16 31.574 -24 02 14.28 V C57
2021-04-03 18:04:04 s 1 +170729.58 2 +119770.61 2160.0 C57
2021-04-03 18:14:04 S 12 16 30.838 -24 02 06.43 V C57
2021-04-03 18:14:04 s 1 +170778.09 4 +120634.21 6180.0 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)