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
2008-03-03 19:09:51 C 06 39 45.44 +01 57 36.0 o A92
2008-03-05 21:51:57 C 06 46 55.82 +02 10 29.8 14.3 r A97
2008-03-05 22:12:06 C 06 46 58.51 +02 10 33.8 13.5 r A97
2008-03-05 22:17:09 C 06 46 59.26 +02 10 35.8 14.3 r A97
2008-03-05 22:23:37 C 06 47 00.08 +02 10 37.6 14.6 r A97
2008-03-05 22:30:20 C 06 47 01.03 +02 10 39.0 14.7 r A97
2008-03-06 03:38:03 C 06 47 43.98 +02 11 59.1 r 703
2008-03-06 03:43:47 C 06 47 44.77 +02 12 00.3 r 703
2008-03-06 03:49:31 C 06 47 45.63 +02 12 01.4 r 703
2008-03-06 03:55:11 C 06 47 46.24 +02 12 02.7 r 703
2008-03-08 22:35:06 C 06 56 39.67 +02 27 37.3 c J32
2008-03-10 05:32:44 C 07 00 37.48 +02 34 23.7 c 704
2008-03-10 05:49:31 C 07 00 39.56 +02 34 27.3 c 704
2008-03-10 06:05:28 C 07 00 41.53 +02 34 30.6 c 704
2008-03-10 06:21:35 C 07 00 43.53 +02 34 34.0 c 704
2008-03-11 01:50:07 C 07 03 10.92 +02 38 37.1 r H51
2008-03-11 01:50:45 C 07 03 10.98 +02 38 37.0 r H51
2008-03-11 01:51:22 C 07 03 11.09 +02 38 38.2 r H51
2008-03-11 21:09:37 C 07 05 33.89 +02 42 29.8 r 084
2008-03-11 21:11:08 C 07 05 34.05 +02 42 30.0 r 084
2008-03-16 00:06:26 C 07 17 18.19 +03 00 52.9 c J32
2008-03-24 17:37:07 C 07 40 01.31 +03 29 52.6 r 084
2008-03-24 17:38:39 C 07 40 01.46 +03 29 52.5 r 084
2008-03-28 21:42:43 C 07 50 05.83 +03 39 19.9 r 084
2008-03-28 21:44:15 C 07 50 05.99 +03 39 20.2 r 084
2008-04-04 21:27:11 C 08 06 12.75 +03 49 03.6 r 084
2008-04-04 21:28:42 C 08 06 12.87 +03 49 03.8 r 084
2008-04-15 20:02:49 C 08 30 04.24 +03 49 12.6 r 084
2008-04-15 20:04:20 C 08 30 04.40 +03 49 13.0 r 084
2008-04-16 20:45:58 C 08 32 15.01 +03 48 18.5 r 084
2008-04-16 20:47:30 C 08 32 15.12 +03 48 19.0 r 084
2008-04-17 02:55:35 C 08 32 47.65 +03 48 07.7 r 703
2008-04-17 03:04:52 C 08 32 48.48 +03 48 07.3 r 703
2008-04-17 03:14:11 C 08 32 49.27 +03 48 06.8 r 703
2008-04-17 03:23:28 C 08 32 50.06 +03 48 06.4 r 703
2008-04-22 20:27:39 C 08 44 44.26 +03 40 12.1 r 084
2008-04-22 20:29:11 C 08 44 44.36 +03 40 11.8 r 084
2008-04-24 03:21:22 C 08 47 23.20 +03 37 52.0 c 704
2008-04-24 03:36:51 C 08 47 24.49 +03 37 51.1 c 704
2008-04-24 03:52:12 C 08 47 25.79 +03 37 49.9 c 704
2008-04-24 04:07:49 C 08 47 27.05 +03 37 48.7 c 704
2008-04-24 04:23:33 C 08 47 28.45 +03 37 47.9 c 704
2008-04-24 19:41:11 C 08 48 46.86 +03 36 28.6 r 084
2008-04-24 19:42:45 C 08 48 47.00 +03 36 28.4 r 084
2008-04-25 20:22:10 C 08 50 52.99 +03 34 20.2 r 084
2008-04-25 20:23:41 C 08 50 53.09 +03 34 19.9 r 084
2008-04-26 21:09:25 C 08 52 59.15 +03 32 04.2 r B09
2008-04-26 21:14:55 C 08 52 59.58 +03 32 03.8 r B09
2008-05-02 03:47:02 C 09 03 38.12 +03 18 16.9 r 703
2008-05-02 03:54:52 C 09 03 38.73 +03 18 16.3 r 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)