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
2016-03-26 04:53:35 C 07 53 50.30 +02 27 29.5 u H21
2016-03-26 04:55:39 C 07 53 50.50 +02 27 29.8 u H21
2016-03-26 04:57:43 C 07 53 50.69 +02 27 30.0 u H21
2016-03-26 04:59:47 C 07 53 50.88 +02 27 30.5 u H21
2016-03-26 05:01:52 C 07 53 51.05 +02 27 30.6 u H21
2016-03-26 05:03:54 C 07 53 51.25 +02 27 31.1 u H21
2016-03-26 05:05:57 C 07 53 51.43 +02 27 31.2 u H21
2016-03-26 05:14:21 C 07 53 52.18 +02 27 32.5 u H21
2016-03-26 05:16:24 C 07 53 52.35 +02 27 32.7 u H21
2016-03-26 05:18:27 C 07 53 52.55 +02 27 33.0 u H21
2016-03-26 05:20:29 C 07 53 52.72 +02 27 33.1 u H21
2016-03-26 05:22:32 C 07 53 52.92 +02 27 33.3 u H21
2016-03-26 05:24:35 C 07 53 53.09 +02 27 33.8 u H21
2016-03-26 05:26:38 C 07 53 53.28 +02 27 33.8 u H21
2016-03-26 05:28:41 C 07 53 53.46 +02 27 34.4 u H21
2016-03-26 05:30:44 C 07 53 53.65 +02 27 34.4 u H21
2016-03-26 19:55:31 C 07 55 13.13 +02 29 39.6 q 160
2016-03-26 19:57:47 C 07 55 13.34 +02 29 40.1 q 160
2016-03-26 20:00:03 C 07 55 13.53 +02 29 40.3 q 160
2016-03-29 00:55:42 C 08 00 01.24 +02 36 46.5 u H21
2016-03-29 00:58:14 C 08 00 01.45 +02 36 46.8 u H21
2016-03-29 01:00:30 C 08 00 01.65 +02 36 47.1 u H21
2016-03-29 01:02:26 C 08 00 01.82 +02 36 47.4 u H21
2016-03-29 01:04:56 C 08 00 02.04 +02 36 47.7 u H21
2016-03-29 01:07:26 C 08 00 02.25 +02 36 48.0 u H21
2016-03-29 01:09:57 C 08 00 02.47 +02 36 48.4 u H21
2016-03-29 01:12:27 C 08 00 02.69 +02 36 48.7 u H21
2016-03-29 01:14:57 C 08 00 02.91 +02 36 49.0 u H21
2016-03-29 01:17:27 C 08 00 03.13 +02 36 49.3 u H21
2016-03-29 01:19:57 C 08 00 03.35 +02 36 49.7 u H21
2016-03-29 01:22:57 C 08 00 03.61 +02 36 50.0 u H21
2016-03-29 07:38:20 C 08 00 36.96 +02 37 40.0 L T05
2016-03-29 08:04:38 C 08 00 39.24 +02 37 43.2 L T05
2016-03-29 08:34:18 C 08 00 41.82 +02 37 46.9 L T05
2016-03-29 09:05:40 C 08 00 44.55 +02 37 50.8 L T05
2016-03-30 00:59:24 C 08 02 10.49 +02 39 42.0 u H21
2016-03-30 01:01:54 C 08 02 10.70 +02 39 42.2 u H21
2016-03-30 01:04:24 C 08 02 10.92 +02 39 42.6 u H21
2016-03-30 01:06:55 C 08 02 11.14 +02 39 42.9 u H21
2016-03-30 01:09:25 C 08 02 11.35 +02 39 43.2 u H21
2016-03-30 01:11:55 C 08 02 11.57 +02 39 43.4 u H21
2016-03-30 01:14:25 C 08 02 11.79 +02 39 43.8 u H21
2016-03-30 01:16:55 C 08 02 12.00 +02 39 44.0 u H21
2016-03-30 01:19:10 C 08 02 12.20 +02 39 44.3 u H21
2016-03-30 01:21:10 C 08 02 12.37 +02 39 44.6 u H21
2016-04-01 01:13:42 C 08 06 27.18 +02 45 00.9 u H21
2016-04-01 01:16:13 C 08 06 27.40 +02 45 01.3 u H21
2016-04-01 01:18:44 C 08 06 27.62 +02 45 01.4 u H21
2016-04-01 01:21:15 C 08 06 27.83 +02 45 01.7 u H21
2016-04-01 01:23:47 C 08 06 28.05 +02 45 02.0 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)