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
2021-04-05 03:24:04 S 12 14 16.114 -23 40 39.00 V C57
2021-04-05 03:24:04 s 1 +145711.51 7 +258842.97 6540.0 C57
2021-04-05 03:34:04 S 12 14 15.413 -23 40 32.52 V C57
2021-04-05 03:34:04 s 1 +145468.44 9 +259383.61 2950.0 C57
2021-04-05 03:44:04 S 12 14 14.777 -23 40 25.79 V C57
2021-04-05 03:44:04 s 1 +145224.59 9 +259922.86 7750.0 C57
2021-04-05 03:54:04 S 12 14 14.009 -23 40 19.92 V C57
2021-04-05 03:54:04 s 1 +144979.97 2 +260460.71 960.0 C57
2021-04-05 04:04:04 S 12 14 13.392 -23 40 13.55 V C57
2021-04-05 04:04:04 s 1 +144734.57 1 +260997.18 2570.0 C57
2021-04-05 04:14:04 S 12 14 12.677 -23 40 06.85 V C57
2021-04-05 04:14:04 s 1 +144488.40 2 +261532.26 2600.0 C57
2021-04-05 04:24:04 S 12 14 11.959 -23 40 00.91 V C57
2021-04-05 04:24:04 s 1 +144241.46 6 +262065.96 1050.0 C57
2021-04-05 04:34:04 S 12 14 11.316 -23 39 54.97 V C57
2021-04-05 04:34:04 s 1 +143993.76 9 +262598.27 7940.0 C57
2021-04-05 04:44:04 S 12 14 10.565 -23 39 48.71 V C57
2021-04-05 04:44:04 s 1 +143745.31 5 +263129.20 3270.0 C57
2021-04-05 04:54:04 S 12 14 09.883 -23 39 42.73 V C57
2021-04-05 04:54:04 s 1 +143496.10 6 +263658.76 7040.0 C57
2021-04-05 05:04:04 S 12 14 09.259 -23 39 35.17 V C57
2021-04-05 05:04:04 s 1 +143246.14 8 +264186.94 9270.0 C57
2021-04-05 05:14:04 S 12 14 08.582 -23 39 28.98 V C57
2021-04-05 05:14:04 s 1 +142995.44 4 +264713.74 9960.0 C57
2021-04-05 05:24:04 S 12 14 07.879 -23 39 21.85 V C57
2021-04-05 05:24:04 s 1 +142743.99 7 +265239.17 9130.0 C57
2021-04-05 05:34:04 S 12 14 07.214 -23 39 15.70 V C57
2021-04-05 05:34:04 s 1 +142491.81 2 +265763.23 6770.0 C57
2021-04-05 05:44:04 S 12 14 06.504 -23 39 09.54 V C57
2021-04-05 05:44:04 s 1 +142238.89 1 +266285.91 2890.0 C57
2021-04-05 05:54:04 S 12 14 05.738 -23 39 03.53 V C57
2021-04-05 05:54:04 s 1 +141985.24 0 +266807.23 7510.0 C57
2021-04-05 06:14:04 S 12 14 04.450 -23 38 47.98 V C57
2021-04-05 06:14:04 s 1 +141475.75 9 +267845.78 2260.0 C57
2021-04-05 06:24:04 S 12 14 03.854 -23 38 44.02 V C57
2021-04-05 06:24:04 s 1 +141219.93 7 +268363.01 2400.0 C57
2021-04-05 06:54:04 S 12 14 01.692 -23 38 23.82 V C57
2021-04-05 06:54:04 s 1 +140448.18 6 +269906.54 3990.0 C57
2021-04-05 07:04:04 S 12 14 01.003 -23 38 17.66 V C57
2021-04-05 07:04:04 s 1 +140189.52 0 +270418.34 8270.0 C57
2021-04-05 07:14:04 S 12 14 00.288 -23 38 12.23 V C57
2021-04-05 07:14:04 s 1 +139930.15 2 +270928.78 1090.0 C57
2021-04-05 07:24:04 S 12 13 59.580 -23 38 04.34 V C57
2021-04-05 07:24:04 s 1 +139670.08 6 +271437.87 2470.0 C57
2021-04-05 07:34:04 S 12 13 58.920 -23 37 58.76 V C57
2021-04-05 07:34:04 s 1 +139409.32 4 +271945.62 2420.0 C57
2021-04-05 07:44:04 S 12 13 58.250 -23 37 52.25 V C57
2021-04-05 07:44:04 s 1 +139147.87 1 +272452.01 940.0 C57
2021-04-05 07:54:04 S 12 13 57.564 -23 37 45.30 V C57
2021-04-05 07:54:04 s 1 +138885.73 0 +272957.07 8040.0 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)