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
2016-04-15 01:21:52 C 08 35 11.44 +03 02 26.8 u H21
2016-04-15 01:24:23 C 08 35 11.64 +03 02 26.7 u H21
2016-04-15 01:26:54 C 08 35 11.86 +03 02 26.9 u H21
2016-04-15 01:29:25 C 08 35 12.05 +03 02 26.7 u H21
2016-04-15 01:31:56 C 08 35 12.27 +03 02 26.8 u H21
2016-04-15 01:34:28 C 08 35 12.47 +03 02 26.7 u H21
2016-04-15 01:36:59 C 08 35 12.67 +03 02 26.7 u H21
2016-04-15 06:44:53 C 08 35 38.22 +03 02 30.1 L T05
2016-04-15 07:10:48 C 08 35 40.32 +03 02 30.2 L T05
2016-04-15 07:36:10 C 08 35 42.37 +03 02 30.3 L T05
2016-04-15 08:01:04 C 08 35 44.36 +03 02 30.4 L T05
2016-04-16 01:14:59 C 08 37 10.71 +03 02 26.1 u H21
2016-04-16 01:17:19 C 08 37 10.90 +03 02 26.2 u H21
2016-04-16 01:19:51 C 08 37 11.11 +03 02 26.1 u H21
2016-04-16 01:22:22 C 08 37 11.31 +03 02 26.2 u H21
2016-04-16 01:24:53 C 08 37 11.53 +03 02 26.1 u H21
2016-04-16 01:27:24 C 08 37 11.75 +03 02 26.1 u H21
2016-04-16 01:29:55 C 08 37 11.93 +03 02 26.4 u H21
2016-04-16 01:32:26 C 08 37 12.13 +03 02 26.2 u H21
2016-04-16 01:34:57 C 08 37 12.34 +03 02 26.1 u H21
2016-04-16 01:37:27 C 08 37 12.56 +03 02 26.0 u H21
2016-04-16 01:39:58 C 08 37 12.74 +03 02 25.9 u H21
2016-04-16 01:42:29 C 08 37 12.97 +03 02 26.1 u H21
2016-04-16 01:44:29 C 08 37 13.12 +03 02 26.2 u H21
2016-04-16 01:46:00 C 08 37 13.25 +03 02 26.1 u H21
2016-04-16 18:06:31 C 08 38 34.49 +03 02 17.8 q 168
2016-04-16 18:44:51 C 08 38 37.66 +03 02 17.6 q 168
2016-04-16 18:47:26 C 08 38 37.88 +03 02 17.4 q 168
2016-04-17 01:20:31 C 08 39 10.68 +03 02 15.9 u H21
2016-04-17 01:23:01 C 08 39 10.89 +03 02 16.0 u H21
2016-04-17 01:25:32 C 08 39 11.09 +03 02 16.0 u H21
2016-04-17 01:28:02 C 08 39 11.30 +03 02 16.0 u H21
2016-04-17 01:30:32 C 08 39 11.50 +03 02 15.9 u H21
2016-04-17 01:33:02 C 08 39 11.70 +03 02 15.8 u H21
2016-04-17 01:35:32 C 08 39 11.90 +03 02 15.8 u H21
2016-04-17 01:38:02 C 08 39 12.10 +03 02 15.8 u H21
2016-04-17 01:40:32 C 08 39 12.31 +03 02 15.8 u H21
2016-04-17 01:43:03 C 08 39 12.51 +03 02 15.8 u H21
2016-04-17 01:45:33 C 08 39 12.71 +03 02 15.7 u H21
2016-04-17 01:48:03 C 08 39 12.91 +03 02 15.8 u H21
2016-04-17 01:50:33 C 08 39 13.12 +03 02 15.7 u H21
2016-04-17 01:53:03 C 08 39 13.31 +03 02 15.6 u H21
2016-04-17 01:55:18 C 08 39 13.49 +03 02 15.6 u H21
2016-04-18 01:22:48 C 08 41 10.02 +03 01 56.3 u H21
2016-04-18 01:25:20 C 08 41 10.23 +03 01 56.3 u H21
2016-04-18 01:27:51 C 08 41 10.44 +03 01 56.3 u H21
2016-04-18 01:30:22 C 08 41 10.64 +03 01 56.2 u H21
2016-04-18 01:32:53 C 08 41 10.84 +03 01 56.1 u H21
2016-04-18 01:35:24 C 08 41 11.05 +03 01 56.1 u H21
2016-04-18 01:37:55 C 08 41 11.24 +03 01 55.9 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)