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
2021-04-06 05:04:04 S 12 12 29.832 -23 24 09.14 V C57
2021-04-06 05:04:04 s 1 +101037.82 8 +326703.20 8350.0 C57
2021-04-06 05:14:04 S 12 12 29.143 -23 24 02.99 V C57
2021-04-06 05:14:04 s 1 +100710.84 0 +327048.55 9960.0 C57
2021-04-06 05:24:04 S 12 12 28.390 -23 23 56.76 V C57
2021-04-06 05:24:04 s 1 +100383.49 2 +327392.75 810.0 C57
2021-04-06 05:34:04 S 12 12 27.751 -23 23 49.67 V C57
2021-04-06 05:34:04 s 1 +100055.78 7 +327735.78 890.0 C57
2021-04-06 05:44:04 S 12 12 27.017 -23 23 43.19 V C57
2021-04-06 05:44:04 s 1 +99727.726 0 +328077.65 230.0 C57
2021-04-06 05:54:04 S 12 12 26.304 -23 23 37.32 V C57
2021-04-06 05:54:04 s 1 +99399.312 0 +328418.36 8810.0 C57
2021-04-06 06:04:04 S 12 12 25.632 -23 23 30.80 V C57
2021-04-06 06:04:04 s 1 +99070.546 0 +328757.91 6650.0 C57
2021-04-06 06:14:04 S 12 12 24.898 -23 23 23.60 V C57
2021-04-06 06:14:04 s 1 +98741.430 0 +329096.30 3740.0 C57
2021-04-06 06:24:04 S 12 12 24.264 -23 23 17.59 V C57
2021-04-06 06:24:04 s 1 +98411.965 0 +329433.53 90.0 C57
2021-04-06 06:34:04 S 12 12 23.515 -23 23 11.08 V C57
2021-04-06 06:34:04 s 1 +98082.154 0 +329769.61 5700.0 C57
2021-04-06 06:44:04 S 12 12 22.870 -23 23 04.81 V C57
2021-04-06 06:44:04 s 1 +97751.999 0 +330104.53 590.0 C57
2021-04-06 06:54:04 S 12 12 22.169 -23 22 58.08 V C57
2021-04-06 06:54:04 s 1 +97421.501 0 +330438.30 4740.0 C57
2021-04-06 07:04:04 S 12 12 21.420 -23 22 52.10 V C57
2021-04-06 07:04:04 s 1 +97090.662 0 +330770.91 8170.0 C57
2021-04-06 07:14:04 S 12 12 20.806 -23 22 46.85 V C57
2021-04-06 07:14:04 s 1 +96759.484 0 +331102.37 870.0 C57
2021-04-06 07:24:04 S 12 12 20.112 -23 22 39.11 V C57
2021-04-06 07:24:04 s 1 +96427.969 0 +331432.68 2860.0 C57
2021-04-06 07:34:04 S 12 12 19.394 -23 22 33.67 V C57
2021-04-06 07:34:04 s 1 +96096.118 0 +331761.84 4130.0 C57
2021-04-06 07:44:04 S 12 12 18.684 -23 22 27.16 V C57
2021-04-06 07:44:04 s 1 +95763.933 0 +332089.85 4700.0 C57
2021-04-06 07:54:04 S 12 12 18.024 -23 22 20.14 V C57
2021-04-06 07:54:04 s 1 +95431.416 0 +332416.72 4550.0 C57
2021-04-06 08:04:04 S 12 12 17.294 -23 22 14.34 V C57
2021-04-06 08:04:04 s 1 +95098.569 0 +332742.43 3710.0 C57
2021-04-06 08:14:04 S 12 12 16.596 -23 22 07.21 V C57
2021-04-06 08:14:04 s 1 +94765.394 0 +333067.00 2160.0 C57
2021-04-06 08:24:04 S 12 12 15.967 -23 22 01.49 V C57
2021-04-06 08:24:04 s 1 +94431.892 0 +333390.43 9910.0 C57
2021-04-06 08:34:04 S 12 12 15.250 -23 21 53.82 V C57
2021-04-06 08:34:04 s 1 +94098.065 0 +333712.71 6980.0 C57
2021-04-06 08:44:04 S 12 12 14.554 -23 21 48.10 V C57
2021-04-06 08:44:04 s 1 +93763.914 0 +334033.84 3350.0 C57
2021-04-06 08:54:04 S 12 12 13.867 -23 21 41.94 V C57
2021-04-06 08:54:04 s 1 +93429.442 0 +334353.84 9040.0 C57
2021-04-06 09:04:04 S 12 12 13.109 -23 21 34.96 V C57
2021-04-06 09:04:04 s 1 +93094.650 0 +334672.69 4040.0 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)