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 01:44:04 S 12 17 36.408 -24 13 09.52 V C57
2021-04-03 01:44:04 s 1 +149502.66 3 +26659.064 9930.0 C57
2021-04-03 01:54:04 S 12 17 35.870 -24 13 01.56 V C57
2021-04-03 01:54:04 s 1 +149934.53 5 +27683.034 900.0 C57
2021-04-03 01:58:01 C 12 17 33.74 -24 15 26.0 q 834
2021-04-03 02:04:04 S 12 17 35.081 -24 12 57.35 V C57
2021-04-03 02:04:04 s 1 +150360.65 9 +28705.946 600.0 C57
2021-04-03 02:14:04 S 12 17 34.466 -24 12 47.16 V C57
2021-04-03 02:14:04 s 1 +150781.08 8 +29727.775 9110.0 C57
2021-04-03 02:24:04 S 12 17 33.730 -24 12 42.48 V C57
2021-04-03 02:24:04 s 1 +151195.87 3 +30748.494 6540.0 C57
2021-04-03 02:34:04 S 12 17 33.149 -24 12 36.68 V C57
2021-04-03 02:34:04 s 1 +151605.06 2 +31768.081 2980.0 C57
2021-04-03 02:40:13 C 12 17 30.29 -24 14 58.5 q 834
2021-04-03 02:44:04 S 12 17 32.426 -24 12 27.94 V C57
2021-04-03 02:44:04 s 1 +152008.70 8 +32786.509 8530.0 C57
2021-04-03 02:54:04 S 12 17 31.747 -24 12 21.17 V C57
2021-04-03 02:54:04 s 1 +152406.85 8 +33803.756 3290.0 C57
2021-04-03 03:04:04 S 12 17 31.058 -24 12 14.40 V C57
2021-04-03 03:04:04 s 1 +152799.56 1 +34819.799 7340.0 C57
2021-04-03 03:14:04 S 12 17 30.473 -24 12 08.46 V C57
2021-04-03 03:14:04 s 1 +153186.86 7 +35834.617 790.0 C57
2021-04-03 03:24:04 S 12 17 29.784 -24 12 02.20 V C57
2021-04-03 03:24:04 s 1 +153568.82 3 +36848.186 3730.0 C57
2021-04-03 03:34:04 S 12 17 29.282 -24 11 55.90 V C57
2021-04-03 03:34:04 s 1 +153945.47 7 +37860.488 6250.0 C57
2021-04-03 03:44:04 S 12 17 28.531 -24 11 47.98 V C57
2021-04-03 03:44:04 s 1 +154316.87 4 +38871.501 8430.0 C57
2021-04-03 03:54:04 S 12 17 27.922 -24 11 40.13 V C57
2021-04-03 03:54:04 s 1 +154683.06 3 +39881.206 370.0 C57
2021-04-03 04:04:04 S 12 17 27.204 -24 11 33.79 V C57
2021-04-03 04:04:04 s 1 +155044.08 9 +40889.583 2160.0 C57
2021-04-03 04:14:04 S 12 17 26.546 -24 11 27.28 V C57
2021-04-03 04:14:04 s 1 +155399.99 7 +41896.615 3890.0 C57
2021-04-03 04:24:04 S 12 17 25.920 -24 11 21.52 V C57
2021-04-03 04:24:04 s 1 +155750.83 2 +42902.284 5630.0 C57
2021-04-03 04:34:04 S 12 17 25.253 -24 11 13.49 V C57
2021-04-03 04:34:04 s 1 +156096.63 9 +43906.571 7490.0 C57
2021-04-03 04:44:04 S 12 17 24.545 -24 11 07.19 V C57
2021-04-03 04:44:04 s 1 +156437.46 3 +44909.461 9540.0 C57
2021-04-03 04:54:04 S 12 17 23.935 -24 10 59.77 V C57
2021-04-03 04:54:04 s 1 +156773.34 6 +45910.937 1870.0 C57
2021-04-03 05:04:04 S 12 17 23.294 -24 10 53.54 V C57
2021-04-03 05:04:04 s 1 +157104.33 1 +46910.982 4570.0 C57
2021-04-03 05:14:04 S 12 17 22.634 -24 10 45.70 V C57
2021-04-03 05:14:04 s 1 +157430.46 3 +47909.582 7710.0 C57
2021-04-03 05:24:04 S 12 17 21.931 -24 10 39.54 V C57
2021-04-03 05:24:04 s 1 +157751.78 2 +48906.721 1370.0 C57
2021-04-03 05:34:04 S 12 17 21.235 -24 10 32.74 V C57
2021-04-03 05:34:04 s 1 +158068.33 1 +49902.386 5650.0 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)