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
2016-04-27 07:12:04 C 08 59 16.69 +02 51 52.1 L T05
2016-04-27 07:29:10 C 08 59 18.05 +02 51 50.4 L T05
2016-04-27 07:42:55 C 08 59 19.13 +02 51 49.1 L T05
2016-04-27 07:57:12 C 08 59 20.24 +02 51 48.2 L T05
2016-04-29 01:47:20 C 09 02 42.89 +02 48 29.1 u H21
2016-04-29 01:49:24 C 09 02 43.05 +02 48 28.8 u H21
2016-04-29 01:51:29 C 09 02 43.21 +02 48 28.6 u H21
2016-04-29 01:53:33 C 09 02 43.38 +02 48 28.4 u H21
2016-04-29 01:55:37 C 09 02 43.55 +02 48 28.2 u H21
2016-04-29 01:57:42 C 09 02 43.70 +02 48 28.0 u H21
2016-04-29 01:59:46 C 09 02 43.87 +02 48 27.9 u H21
2016-04-29 02:01:50 C 09 02 44.03 +02 48 27.8 u H21
2016-04-29 02:03:54 C 09 02 44.19 +02 48 27.5 u H21
2016-04-29 02:05:59 C 09 02 44.36 +02 48 27.3 u H21
2016-04-29 02:08:03 C 09 02 44.52 +02 48 27.1 u H21
2016-04-29 02:10:07 C 09 02 44.69 +02 48 27.1 u H21
2016-04-29 02:11:58 C 09 02 44.84 +02 48 26.9 u H21
2016-04-29 07:18:53 C 09 03 09.46 +02 48 03.0 L T05
2016-04-29 07:34:29 C 09 03 10.68 +02 48 01.7 L T05
2016-04-29 07:47:48 C 09 03 11.72 +02 48 00.6 L T05
2016-04-29 08:02:49 C 09 03 12.92 +02 47 59.2 L T05
2016-05-01 07:15:01 C 09 07 00.50 +02 43 43.0 L T05
2016-05-01 07:35:34 C 09 07 02.12 +02 43 41.2 L T05
2016-05-01 07:56:08 C 09 07 03.72 +02 43 38.9 L T05
2016-05-01 08:18:14 C 09 07 05.45 +02 43 37.0 L T05
2016-05-03 06:53:25 C 09 10 49.40 +02 38 52.5 L T05
2016-05-03 07:07:47 C 09 10 50.51 +02 38 51.1 L T05
2016-05-03 07:22:21 C 09 10 51.63 +02 38 49.5 L T05
2016-05-03 07:37:50 C 09 10 52.87 +02 38 48.1 L T05
2016-05-05 19:37:41 C 09 15 40.16 +02 31 54.5 q 160
2016-05-05 19:39:37 C 09 15 40.33 +02 31 54.4 q 160
2016-05-05 19:41:31 C 09 15 40.54 +02 31 54.4 q 160
2016-05-07 01:41:11 C 09 18 03.73 +02 28 11.3 u H21
2016-05-07 01:43:41 C 09 18 03.92 +02 28 10.8 u H21
2016-05-07 01:46:11 C 09 18 04.13 +02 28 10.4 u H21
2016-05-07 01:49:11 C 09 18 04.36 +02 28 10.2 u H21
2016-05-08 04:14:27 C 09 20 10.19 +02 24 44.1 q 703
2016-05-08 04:21:42 C 09 20 10.80 +02 24 43.6 q 703
2016-05-08 04:28:56 C 09 20 11.38 +02 24 42.3 q 703
2016-05-08 04:36:11 C 09 20 11.95 +02 24 41.6 q 703
2016-05-20 19:08:53 C 09 44 01.55 +01 34 59.6 o K95
2016-05-20 19:19:18 C 09 44 02.35 +01 34 57.4 o K95
2016-05-20 19:29:45 C 09 44 03.17 +01 34 55.2 o K95
2016-05-21 20:13:50 C 09 45 59.03 +01 29 56.0 q 160
2016-05-21 20:16:08 C 09 45 59.20 +01 29 55.3 q 160
2016-05-21 20:18:25 C 09 45 59.37 +01 29 54.1 q 160
2016-05-22 20:13:43 C 09 47 51.33 +01 25 06.5 q 160
2016-05-22 20:16:03 C 09 47 51.48 +01 25 06.3 q 160
2016-05-22 20:18:20 C 09 47 51.66 +01 25 05.7 q 160
2016-05-29 03:33:12 C 09 59 36.58 +00 52 25.8 q 703
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)