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 09:54:04 S 12 17 04.051 -24 07 37.92 V C57
2021-04-03 09:54:04 s 1 +164751.25 7 +75233.944 6630.0 C57
2021-04-03 10:04:04 S 12 17 03.449 -24 07 32.34 V C57
2021-04-03 10:04:04 s 1 +164953.30 3 +76185.708 5050.0 C57
2021-04-03 10:14:04 S 12 17 02.700 -24 07 23.88 V C57
2021-04-03 10:14:04 s 1 +165151.58 6 +77135.737 6040.0 C57
2021-04-03 10:24:04 S 12 17 02.095 -24 07 18.05 V C57
2021-04-03 10:24:04 s 1 +165346.13 7 +78084.028 9650.0 C57
2021-04-03 10:34:04 S 12 17 01.440 -24 07 11.82 V C57
2021-04-03 10:34:04 s 1 +165536.98 5 +79030.573 5940.0 C57
2021-04-03 10:44:04 S 12 17 00.778 -24 07 04.51 V C57
2021-04-03 10:44:04 s 1 +165724.16 2 +79975.370 4970.0 C57
2021-04-03 10:54:04 S 12 17 00.101 -24 06 56.16 V C57
2021-04-03 10:54:04 s 1 +165907.69 5 +80918.412 6790.0 C57
2021-04-03 10:55:43 C 12 16 51.44 -24 09 48.9 V T08
2021-04-03 11:04:04 S 12 16 59.477 -24 06 51.19 V C57
2021-04-03 11:04:04 s 1 +166087.61 6 +81859.696 1480.0 C57
2021-04-03 11:08:20 C 12 16 50.42 -24 09 40.6 V T08
2021-04-03 11:14:04 S 12 16 58.891 -24 06 43.49 V C57
2021-04-03 11:14:04 s 1 +166263.95 3 +82799.217 9070.0 C57
2021-04-03 11:24:04 S 12 16 58.174 -24 06 36.90 V C57
2021-04-03 11:24:04 s 1 +166436.73 5 +83736.972 9630.0 C57
2021-04-03 11:24:18 C 12 16 49.14 -24 09 30.2 V T08
2021-04-03 11:34:04 S 12 16 57.480 -24 06 31.28 V C57
2021-04-03 11:34:04 s 1 +166605.99 1 +84672.956 3210.0 C57
2021-04-03 11:44:04 S 12 16 56.707 -24 06 24.48 V C57
2021-04-03 11:44:04 s 1 +166771.74 8 +85607.165 9870.0 C57
2021-04-03 11:54:04 S 12 16 56.160 -24 06 17.35 V C57
2021-04-03 11:54:04 s 1 +166934.03 5 +86539.597 9660.0 C57
2021-04-03 12:04:04 S 12 16 55.526 -24 06 10.48 V C57
2021-04-03 12:04:04 s 1 +167092.87 8 +87470.248 2630.0 C57
2021-04-03 12:14:04 S 12 16 54.936 -24 06 04.82 V C57
2021-04-03 12:14:04 s 1 +167248.30 7 +88399.115 8840.0 C57
2021-04-03 12:24:04 S 12 16 54.146 -24 05 56.94 V C57
2021-04-03 12:24:04 s 1 +167400.34 7 +89326.194 8350.0 C57
2021-04-03 12:34:04 S 12 16 53.551 -24 05 52.51 V C57
2021-04-03 12:34:04 s 1 +167549.02 5 +90251.483 1200.0 C57
2021-04-03 12:44:04 S 12 16 52.850 -24 05 45.13 V C57
2021-04-03 12:44:04 s 1 +167694.36 8 +91174.979 7440.0 C57
2021-04-03 12:53:14 C 12 16 42.33 -24 08 22.3 q E89
2021-04-03 12:54:04 S 12 16 52.118 -24 05 36.85 V C57
2021-04-03 12:54:04 s 1 +167836.40 3 +92096.680 7130.0 C57
2021-04-03 13:04:04 S 12 16 51.562 -24 05 30.98 V C57
2021-04-03 13:04:04 s 1 +167975.15 4 +93016.583 310.0 C57
2021-04-03 13:14:04 S 12 16 50.808 -24 05 25.15 V C57
2021-04-03 13:14:04 s 1 +168110.64 8 +93934.686 7040.0 C57
2021-04-03 13:24:04 S 12 16 50.297 -24 05 17.84 V C57
2021-04-03 13:24:04 s 1 +168242.91 0 +94850.986 7370.0 C57
2021-04-03 13:34:04 S 12 16 49.490 -24 05 10.97 V C57
2021-04-03 13:34:04 s 1 +168371.96 6 +95765.483 1340.0 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)