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
2016-04-12 01:14:37 C 08 29 09.06 +03 01 30.4 u H21
2016-04-12 01:17:08 C 08 29 09.24 +03 01 30.5 u H21
2016-04-12 01:19:39 C 08 29 09.46 +03 01 30.3 u H21
2016-04-12 01:22:11 C 08 29 09.67 +03 01 30.5 u H21
2016-04-12 01:24:42 C 08 29 09.87 +03 01 30.6 u H21
2016-04-12 06:48:58 C 08 29 37.01 +03 01 40.8 L T05
2016-04-12 07:14:11 C 08 29 39.06 +03 01 41.1 L T05
2016-04-12 07:41:07 C 08 29 41.26 +03 01 41.7 L T05
2016-04-12 08:06:43 C 08 29 43.35 +03 01 42.3 L T05
2016-04-13 01:17:05 C 08 31 10.24 +03 01 58.7 u H21
2016-04-13 01:19:10 C 08 31 10.41 +03 01 58.8 u H21
2016-04-13 01:21:15 C 08 31 10.57 +03 01 58.9 u H21
2016-04-13 01:23:19 C 08 31 10.74 +03 01 58.9 u H21
2016-04-13 01:25:23 C 08 31 10.92 +03 01 59.0 u H21
2016-04-13 01:27:27 C 08 31 11.08 +03 01 59.1 u H21
2016-04-13 01:29:30 C 08 31 11.25 +03 01 59.1 u H21
2016-04-13 01:31:33 C 08 31 11.41 +03 01 59.1 u H21
2016-04-13 01:33:37 C 08 31 11.58 +03 01 59.2 u H21
2016-04-13 01:37:06 C 08 31 11.87 +03 01 59.2 u H21
2016-04-13 06:43:52 C 08 31 37.50 +03 02 07.3 L T05
2016-04-13 06:50:16 S 08 31 38.26 +03 02 09.5 L C51
2016-04-13 07:09:07 C 08 31 39.55 +03 02 07.1 L T05
2016-04-13 07:35:58 C 08 31 41.70 +03 02 07.6 L T05
2016-04-13 08:01:51 C 08 31 43.85 +03 02 08.2 L T05
2016-04-13 09:58:57 S 08 31 54.060 +03 02 12.48 L C51
2016-04-13 13:07:49 S 08 32 09.87 +03 02 14.6 L C51
2016-04-13 16:16:30 S 08 32 25.69 +03 02 17.3 L C51
2016-04-13 19:25:11 S 08 32 41.47 +03 02 19.2 L C51
2016-04-14 00:08:18 S 08 33 05.15 +03 02 22.4 L C51
2016-04-14 01:20:14 C 08 33 11.09 +03 02 17.8 q H21
2016-04-14 01:23:32 C 08 33 11.36 +03 02 17.7 q H21
2016-04-14 01:27:03 C 08 33 11.65 +03 02 17.7 q H21
2016-04-14 01:30:23 C 08 33 11.92 +03 02 17.8 q H21
2016-04-14 01:33:54 C 08 33 12.21 +03 02 18.0 q H21
2016-04-14 01:37:12 C 08 33 12.47 +03 02 18.0 q H21
2016-04-14 01:40:43 C 08 33 12.75 +03 02 18.0 q H21
2016-04-14 01:42:44 S 08 33 13.07 +03 02 23.2 L C51
2016-04-14 03:16:59 S 08 33 20.93 +03 02 24.6 L C51
2016-04-14 04:51:25 S 08 33 28.84 +03 02 25.0 L C51
2016-04-14 06:25:51 S 08 33 36.72 +03 02 25.7 L C51
2016-04-14 08:00:06 S 08 33 44.594 +03 02 26.70 L C51
2016-04-14 09:34:32 S 08 33 52.49 +03 02 26.8 L C51
2016-04-14 11:08:48 S 08 34 00.367 +03 02 28.36 L C51
2016-04-14 11:08:59 S 08 34 00.365 +03 02 27.78 L C51
2016-04-14 12:43:14 S 08 34 08.24 +03 02 28.6 L C51
2016-04-14 15:51:55 S 08 34 23.98 +03 02 29.9 L C51
2016-04-14 19:00:47 S 08 34 39.73 +03 02 30.4 L C51
2016-04-14 22:09:28 S 08 34 55.50 +03 02 31.5 L C51
2016-04-15 01:16:50 C 08 35 11.01 +03 02 26.8 u H21
2016-04-15 01:19:21 C 08 35 11.23 +03 02 26.8 u H21
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)