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
2021-04-04 06:34:04 S 12 15 41.222 -23 54 04.68 V C57
2021-04-04 06:34:04 s 1 +168284.79 5 +179594.14 6950.0 C57
2021-04-04 06:44:04 S 12 15 40.538 -23 53 57.16 V C57
2021-04-04 06:44:04 s 1 +168181.66 9 +180325.90 7650.0 C57
2021-04-04 06:54:04 S 12 15 39.890 -23 53 51.07 V C57
2021-04-04 06:54:04 s 1 +168076.97 7 +181055.99 5200.0 C57
2021-04-04 07:04:04 S 12 15 39.199 -23 53 45.42 V C57
2021-04-04 07:04:04 s 1 +167970.73 1 +181784.40 9620.0 C57
2021-04-04 07:14:04 S 12 15 38.515 -23 53 38.11 V C57
2021-04-04 07:14:04 s 1 +167862.94 0 +182511.15 930.0 C57
2021-04-04 07:24:04 S 12 15 37.886 -23 53 32.03 V C57
2021-04-04 07:24:04 s 1 +167753.61 2 +183236.22 9140.0 C57
2021-04-04 07:34:04 S 12 15 37.157 -23 53 25.30 V C57
2021-04-04 07:34:04 s 1 +167642.75 7 +183959.63 4280.0 C57
2021-04-04 07:44:04 S 12 15 36.485 -23 53 18.92 V C57
2021-04-04 07:44:04 s 1 +167530.38 5 +184681.38 6360.0 C57
2021-04-04 07:54:04 S 12 15 35.846 -23 53 12.16 V C57
2021-04-04 07:54:04 s 1 +167416.50 5 +185401.47 5410.0 C57
2021-04-04 08:04:04 S 12 15 35.124 -23 53 06.83 V C57
2021-04-04 08:04:04 s 1 +167301.12 5 +186119.89 1430.0 C57
2021-04-04 08:14:04 S 12 15 34.459 -23 53 00.67 V C57
2021-04-04 08:14:04 s 1 +167184.25 5 +186836.67 4440.0 C57
2021-04-04 08:24:04 S 12 15 33.773 -23 52 52.25 V C57
2021-04-04 08:24:04 s 1 +167065.90 4 +187551.78 4480.0 C57
2021-04-04 08:34:04 S 12 15 33.108 -23 52 46.38 V C57
2021-04-04 08:34:04 s 1 +166946.08 0 +188265.25 1540.0 C57
2021-04-04 08:44:04 S 12 15 32.414 -23 52 39.79 V C57
2021-04-04 08:44:04 s 1 +166824.79 3 +188977.07 5650.0 C57
2021-04-04 08:54:04 S 12 15 31.805 -23 52 34.39 V C57
2021-04-04 08:54:04 s 1 +166702.05 1 +189687.24 6830.0 C57
2021-04-04 09:04:04 S 12 15 31.102 -23 52 27.95 V C57
2021-04-04 09:04:04 s 1 +166577.86 2 +190395.77 5090.0 C57
2021-04-04 09:14:04 S 12 15 30.466 -23 52 20.71 V C57
2021-04-04 09:14:04 s 1 +166452.23 7 +191102.66 450.0 C57
2021-04-04 09:24:04 S 12 15 29.782 -23 52 15.13 V C57
2021-04-04 09:24:04 s 1 +166325.18 2 +191807.91 2920.0 C57
2021-04-04 09:34:04 S 12 15 28.999 -23 52 07.07 V C57
2021-04-04 09:34:04 s 1 +166196.70 7 +192511.52 2530.0 C57
2021-04-04 09:44:04 S 12 15 28.426 -23 52 02.46 V C57
2021-04-04 09:44:04 s 1 +166066.82 0 +193213.50 9290.0 C57
2021-04-04 09:54:04 S 12 15 27.746 -23 51 54.50 V C57
2021-04-04 09:54:04 s 1 +165935.52 9 +193913.85 3220.0 C57
2021-04-04 10:04:04 S 12 15 27.014 -23 51 48.71 V C57
2021-04-04 10:04:04 s 1 +165802.84 3 +194612.57 4330.0 C57
2021-04-04 10:14:04 S 12 15 26.354 -23 51 41.40 V C57
2021-04-04 10:14:04 s 1 +165668.77 0 +195309.66 2640.0 C57
2021-04-04 10:24:04 S 12 15 25.694 -23 51 36.22 V C57
2021-04-04 10:24:04 s 1 +165533.31 7 +196005.13 8160.0 C57
2021-04-04 10:34:04 S 12 15 24.941 -23 51 29.27 V C57
2021-04-04 10:34:04 s 1 +165396.49 4 +196698.98 910.0 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)