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
2021-04-02 21:34:04 S 12 17 52.913 -24 16 04.15 V C57
2021-04-02 21:34:04 s 1 +136677.14 2 + 810.871 8470.0 C57
2021-04-02 21:44:04 S 12 17 52.356 -24 15 57.13 V C57
2021-04-02 21:44:04 s 1 +137270.90 1 + 1850.110 6620.0 C57
2021-04-02 21:54:04 S 12 17 51.706 -24 15 50.51 V C57
2021-04-02 21:54:04 s 1 +137857.46 1 + 2889.256 680.0 C57
2021-04-02 22:04:04 S 12 17 51.005 -24 15 41.26 V C57
2021-04-02 22:04:04 s 1 +138436.88 7 + 3928.256 790.0 C57
2021-04-02 22:14:04 S 12 17 50.326 -24 15 35.28 V C57
2021-04-02 22:14:04 s 1 +139009.24 2 + 4967.060 7060.0 C57
2021-04-02 22:24:04 S 12 17 49.661 -24 15 28.55 V C57
2021-04-02 22:24:04 s 1 +139574.59 0 + 6005.616 9620.0 C57
2021-04-02 22:34:04 S 12 17 48.979 -24 15 20.99 V C57
2021-04-02 22:34:04 s 1 +140132.99 3 + 7043.878 8600.0 C57
2021-04-02 22:44:04 S 12 17 48.365 -24 15 14.29 V C57
2021-04-02 22:44:04 s 1 +140684.51 3 + 8081.798 4090.0 C57
2021-04-02 22:54:04 S 12 17 47.611 -24 15 06.98 V C57
2021-04-02 22:54:04 s 1 +141229.21 1 + 9119.329 6240.0 C57
2021-04-02 23:04:04 S 12 17 47.028 -24 15 00.47 V C57
2021-04-02 23:04:04 s 1 +141767.14 9 +10156.428 5150.0 C57
2021-04-02 23:14:04 S 12 17 46.253 -24 14 53.52 V C57
2021-04-02 23:14:04 s 1 +142298.38 8 +11193.051 940.0 C57
2021-04-02 23:24:04 S 12 17 45.674 -24 14 45.96 V C57
2021-04-02 23:24:04 s 1 +142822.98 6 +12229.155 3720.0 C57
2021-04-02 23:34:04 S 12 17 44.983 -24 14 39.44 V C57
2021-04-02 23:34:04 s 1 +143341.00 5 +13264.700 3620.0 C57
2021-04-02 23:44:04 S 12 17 44.417 -24 14 32.82 V C57
2021-04-02 23:44:04 s 1 +143852.50 3 +14299.645 740.0 C57
2021-04-02 23:54:04 S 12 17 43.718 -24 14 27.28 V C57
2021-04-02 23:54:04 s 1 +144357.53 8 +15333.952 5210.0 C57
2021-04-03 00:04:04 S 12 17 43.044 -24 14 20.00 V C57
2021-04-03 00:04:04 s 1 +144856.16 9 +16367.583 7120.0 C57
2021-04-03 00:14:04 S 12 17 42.358 -24 14 12.16 V C57
2021-04-03 00:14:04 s 1 +145348.45 4 +17400.500 6590.0 C57
2021-04-03 00:24:04 S 12 17 41.714 -24 14 05.10 V C57
2021-04-03 00:24:04 s 1 +145834.44 9 +18432.668 3730.0 C57
2021-04-03 00:34:04 S 12 17 41.066 -24 13 59.92 V C57
2021-04-03 00:34:04 s 1 +146314.21 1 +19464.053 8650.0 C57
2021-04-03 00:44:04 S 12 17 40.378 -24 13 51.06 V C57
2021-04-03 00:44:04 s 1 +146787.79 6 +20494.620 1470.0 C57
2021-04-03 00:54:04 S 12 17 39.766 -24 13 43.79 V C57
2021-04-03 00:54:04 s 1 +147255.25 9 +21524.336 2270.0 C57
2021-04-03 01:04:04 S 12 17 39.067 -24 13 36.80 V C57
2021-04-03 01:04:04 s 1 +147716.65 6 +22553.169 1180.0 C57
2021-04-03 01:14:04 S 12 17 38.386 -24 13 30.22 V C57
2021-04-03 01:14:04 s 1 +148172.04 2 +23581.088 8300.0 C57
2021-04-03 01:24:04 S 12 17 37.778 -24 13 23.59 V C57
2021-04-03 01:24:04 s 1 +148621.46 9 +24608.064 3730.0 C57
2021-04-03 01:34:04 S 12 17 37.102 -24 13 17.04 V C57
2021-04-03 01:34:04 s 1 +149064.99 1 +25634.065 7570.0 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)