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 20:44:04 S 12 13 04.543 -23 29 32.06 V C57
2021-04-05 20:44:04 s 1 +116885.49 1 +307925.76 7340.0 C57
2021-04-05 20:54:04 S 12 13 03.806 -23 29 25.40 V C57
2021-04-05 20:54:04 s 1 +116579.03 1 +308330.81 2260.0 C57
2021-04-05 21:04:04 S 12 13 03.118 -23 29 18.56 V C57
2021-04-05 21:04:04 s 1 +116272.10 8 +308734.64 6210.0 C57
2021-04-05 21:14:04 S 12 13 02.419 -23 29 11.54 V C57
2021-04-05 21:14:04 s 1 +115964.72 3 +309137.24 9180.0 C57
2021-04-05 21:24:04 S 12 13 01.656 -23 29 06.14 V C57
2021-04-05 21:24:04 s 1 +115656.88 0 +309538.62 1200.0 C57
2021-04-05 21:34:04 S 12 13 01.061 -23 28 58.58 V C57
2021-04-05 21:34:04 s 1 +115348.58 0 +309938.77 2250.0 C57
2021-04-05 21:44:04 S 12 13 00.326 -23 28 53.18 V C57
2021-04-05 21:44:04 s 1 +115039.82 6 +310337.71 2350.0 C57
2021-04-05 21:54:04 S 12 12 59.707 -23 28 47.06 V C57
2021-04-05 21:54:04 s 1 +114730.62 0 +310735.44 1500.0 C57
2021-04-05 22:04:04 S 12 12 59.038 -23 28 39.43 V C57
2021-04-05 22:04:04 s 1 +114420.96 4 +311131.94 9700.0 C57
2021-04-05 22:14:04 S 12 12 58.226 -23 28 33.13 V C57
2021-04-05 22:14:04 s 1 +114110.86 1 +311527.23 6970.0 C57
2021-04-05 22:24:04 S 12 12 57.545 -23 28 27.44 V C57
2021-04-05 22:24:04 s 1 +113800.31 2 +311921.31 3300.0 C57
2021-04-05 22:34:04 S 12 12 56.856 -23 28 20.21 V C57
2021-04-05 22:34:04 s 1 +113489.32 0 +312314.17 8690.0 C57
2021-04-05 22:44:04 S 12 12 56.153 -23 28 14.66 V C57
2021-04-05 22:44:04 s 1 +113177.88 7 +312705.82 3160.0 C57
2021-04-05 22:54:04 S 12 12 55.452 -23 28 07.86 V C57
2021-04-05 22:54:04 s 1 +112866.01 6 +313096.27 6710.0 C57
2021-04-05 23:04:04 S 12 12 54.766 -23 28 01.63 V C57
2021-04-05 23:04:04 s 1 +112553.70 9 +313485.50 9340.0 C57
2021-04-05 23:14:04 S 12 12 54.091 -23 27 55.37 V C57
2021-04-05 23:14:04 s 1 +112240.96 7 +313873.53 1050.0 C57
2021-04-05 23:24:04 S 12 12 53.398 -23 27 48.31 V C57
2021-04-05 23:24:04 s 1 +111927.79 3 +314260.35 1860.0 C57
2021-04-05 23:34:04 S 12 12 52.774 -23 27 43.09 V C57
2021-04-05 23:34:04 s 1 +111614.18 9 +314645.96 1760.0 C57
2021-04-05 23:44:04 S 12 12 51.991 -23 27 35.32 V C57
2021-04-05 23:44:04 s 1 +111300.15 8 +315030.37 750.0 C57
2021-04-05 23:54:04 S 12 12 51.360 -23 27 29.77 V C57
2021-04-05 23:54:04 s 1 +110985.70 1 +315413.58 8860.0 C57
2021-04-06 00:04:04 S 12 12 50.606 -23 27 23.11 V C57
2021-04-06 00:04:04 s 1 +110670.82 1 +315795.59 6070.0 C57
2021-04-06 00:14:04 S 12 12 49.932 -23 27 16.63 V C57
2021-04-06 00:14:04 s 1 +110355.52 0 +316176.40 2390.0 C57
2021-04-06 00:24:04 S 12 12 49.238 -23 27 09.54 V C57
2021-04-06 00:24:04 s 1 +110039.79 9 +316556.01 7830.0 C57
2021-04-06 00:34:04 S 12 12 48.574 -23 27 03.56 V C57
2021-04-06 00:34:04 s 1 +109723.66 1 +316934.42 2390.0 C57
2021-04-06 00:44:04 S 12 12 47.861 -23 26 58.34 V C57
2021-04-06 00:44:04 s 1 +109407.10 9 +317311.63 6080.0 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)