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 18:24:04 S 12 16 30.300 -24 02 02.44 V C57
2021-04-03 18:24:04 s 1 +170824.02 8 +121496.00 5070.0 C57
2021-04-03 19:04:04 S 12 16 27.600 -24 01 33.89 V C57
2021-04-03 19:04:04 s 1 +170982.35 4 +124924.98 40.0 C57
2021-04-03 19:14:04 S 12 16 26.878 -24 01 27.66 V C57
2021-04-03 19:14:04 s 1 +171015.67 4 +125777.69 3820.0 C57
2021-04-03 19:24:04 S 12 16 26.201 -24 01 19.70 V C57
2021-04-03 19:24:04 s 1 +171046.52 5 +126628.58 2670.0 C57
2021-04-03 19:34:04 S 12 16 25.510 -24 01 14.56 V C57
2021-04-03 19:34:04 s 1 +171074.92 4 +127477.66 6650.0 C57
2021-04-03 19:44:04 S 12 16 24.857 -24 01 08.00 V C57
2021-04-03 19:44:04 s 1 +171100.89 0 +128324.94 5770.0 C57
2021-04-03 19:54:04 S 12 16 24.235 -24 01 01.06 V C57
2021-04-03 19:54:04 s 1 +171124.43 9 +129170.40 80.0 C57
2021-04-03 20:04:04 S 12 16 23.534 -24 00 54.25 V C57
2021-04-03 20:04:04 s 1 +171145.58 9 +130014.06 9600.0 C57
2021-04-03 20:14:04 S 12 16 22.879 -24 00 48.35 V C57
2021-04-03 20:14:04 s 1 +171164.35 6 +130855.91 4380.0 C57
2021-04-03 20:24:04 S 12 16 22.210 -24 00 41.36 V C57
2021-04-03 20:24:04 s 1 +171180.75 7 +131695.95 4440.0 C57
2021-04-03 20:34:04 S 12 16 21.518 -24 00 35.17 V C57
2021-04-03 20:34:04 s 1 +171194.80 9 +132534.19 9810.0 C57
2021-04-03 20:44:04 S 12 16 20.923 -24 00 28.48 V C57
2021-04-03 20:44:04 s 1 +171206.52 8 +133370.62 540.0 C57
2021-04-03 20:54:04 S 12 16 20.155 -24 00 21.28 V C57
2021-04-03 20:54:04 s 1 +171215.93 0 +134205.25 6640.0 C57
2021-04-03 21:04:04 S 12 16 19.519 -24 00 16.42 V C57
2021-04-03 21:04:04 s 1 +171223.03 2 +135038.09 8150.0 C57
2021-04-03 21:14:04 S 12 16 18.840 -24 00 09.14 V C57
2021-04-03 21:14:04 s 1 +171227.84 9 +135869.12 5100.0 C57
2021-04-03 21:24:04 S 12 16 18.175 -24 00 02.59 V C57
2021-04-03 21:24:04 s 1 +171230.39 8 +136698.36 7530.0 C57
2021-04-03 21:34:04 S 12 16 17.518 -23 59 55.82 V C57
2021-04-03 21:34:04 s 1 +171230.69 3 +137525.80 5460.0 C57
2021-04-03 21:44:04 S 12 16 16.879 -23 59 50.06 V C57
2021-04-03 21:44:04 s 1 +171228.75 1 +138351.45 8930.0 C57
2021-04-03 21:54:04 S 12 16 16.174 -23 59 43.62 V C57
2021-04-03 21:54:04 s 1 +171224.58 8 +139175.30 7960.0 C57
2021-04-03 22:04:04 S 12 16 15.509 -23 59 36.92 V C57
2021-04-03 22:04:04 s 1 +171218.21 7 +139997.36 2580.0 C57
2021-04-04 01:24:04 S 12 16 01.896 -23 57 24.37 V C57
2021-04-04 01:24:04 s 1 +170649.68 9 +156065.34 3360.0 C57
2021-04-04 01:44:04 S 12 16 00.598 -23 57 11.38 V C57
2021-04-04 01:44:04 s 1 +170548.93 8 +157633.36 6600.0 C57
2021-04-04 01:54:04 S 12 15 59.981 -23 57 06.08 V C57
2021-04-04 01:54:04 s 1 +170495.72 0 +158414.75 7520.0 C57
2021-04-04 02:04:04 S 12 15 59.460 -23 57 00.18 V C57
2021-04-04 02:04:04 s 1 +170440.62 1 +159194.40 4670.0 C57
2021-04-04 02:14:04 S 12 15 58.740 -23 56 53.02 V C57
2021-04-04 02:14:04 s 1 +170383.65 6 +159972.30 8080.0 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)