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
2013-06-11 11:25:18 C 11 51 36.97 -11 00 11.5 r E12
2013-06-11 11:41:33 C 11 51 37.44 -11 00 10.9 r E12
2013-06-11 11:57:58 C 11 51 38.12 -11 00 10.4 r E12
2013-07-03 10:35:22 C 12 15 38.66 -11 09 29.9 r E12
2013-07-03 10:47:14 C 12 15 39.27 -11 09 31.2 r E12
2013-07-03 10:59:24 C 12 15 39.88 -11 09 32.1 r E12
2013-07-03 11:11:42 C 12 15 40.53 -11 09 33.4 r E12
2013-07-08 23:45:59 C 12 22 48.85 -11 24 30.2 r Y00
2013-07-08 23:56:32 C 12 22 49.40 -11 24 32.4 r Y00
2013-07-09 00:07:57 C 12 22 50.05 -11 24 33.4 r Y00
2013-07-26 23:11:01 C 12 48 23.53 -12 38 24.5 r Y00
2013-07-26 23:21:03 C 12 48 24.19 -12 38 27.0 r Y00
2013-07-26 23:27:45 C 12 48 24.63 -12 38 28.0 r Y00
2013-07-28 22:10:06 C 12 51 22.21 -12 48 21.8 r Y00
2013-07-28 22:20:24 C 12 51 22.87 -12 48 23.6 r Y00
2013-07-28 22:29:09 C 12 51 23.39 -12 48 25.8 r Y00
2013-08-24 21:57:38 C 13 35 48.78 -15 30 20.5 r Y00
2013-08-24 22:04:06 C 13 35 49.25 -15 30 22.5 r Y00
2013-08-24 22:11:34 C 13 35 49.77 -15 30 24.2 r Y00
2013-09-01 21:57:17 C 13 50 08.29 -16 23 54.1 r Y00
2013-09-01 22:05:23 C 13 50 08.75 -16 23 58.5 r Y00
2013-09-01 22:10:47 C 13 50 09.20 -16 23 59.7 r Y00
2015-01-23 09:04:48 C 15 52 36.99 -27 26 08.5 u 807
2015-01-23 09:06:35 C 15 52 37.12 -27 26 09.0 u 807
2015-01-23 09:08:37 C 15 52 37.25 -27 26 09.7 u 807
2015-02-08 14:50:31 C 16 21 40.635 -28 57 22.21 L F51
2015-02-08 15:04:57 C 16 21 41.661 -28 57 25.38 L F51
2015-02-08 15:19:22 C 16 21 42.680 -28 57 28.36 L F51
2015-02-09 14:53:53 C 16 23 24.021 -29 02 18.58 L F51
2015-02-09 15:08:19 C 16 23 25.037 -29 02 21.52 L F51
2015-02-09 15:37:07 C 16 23 27.063 -29 02 27.42 L F51
2015-05-21 10:13:22 C 17 10 21.26 -31 56 49.5 L W84
2015-05-21 10:18:14 C 17 10 20.90 -31 56 48.5 L W84
2015-05-21 10:23:51 C 17 10 20.46 -31 56 47.4 L W84
2015-05-22 09:59:25 C 17 08 31.67 -31 52 18.8 L W84
2015-05-22 10:04:27 C 17 08 31.27 -31 52 17.8 L W84
2015-05-22 10:09:08 C 17 08 30.89 -31 52 16.8 L W84
2015-05-22 10:13:46 C 17 08 30.53 -31 52 15.8 L W84
2015-05-22 10:18:35 C 17 08 30.13 -31 52 14.8 L W84
2015-06-05 01:42:49 C 16 39 14.80 -30 11 28.7 q Y00
2015-06-05 01:49:59 C 16 39 14.10 -30 11 25.7 q Y00
2015-06-05 01:59:22 C 16 39 13.17 -30 11 21.7 q Y00
2015-06-22 09:21:13 C 16 00 23.590 -26 27 57.04 L F52
2015-06-22 09:35:39 C 16 00 22.342 -26 27 48.27 L F52
2015-06-22 09:50:01 C 16 00 21.110 -26 27 39.32 L F52
2015-06-22 10:04:24 C 16 00 19.854 -26 27 31.37 L F52
2015-06-24 06:11:56 C 15 56 46.93 -26 00 18.9 q 719
2015-06-24 06:16:17 C 15 56 46.52 -26 00 15.9 q 719
2015-07-01 08:55:36 C 15 44 48.61 -24 15 02.0 q Q68
2015-07-01 09:53:57 C 15 44 44.85 -24 14 27.0 q Q68
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)