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
2020-10-27 12:42:12 C 10 49 20.95 +06 49 19.7 U I41
2020-10-27 12:48:55 C 10 49 21.69 +06 49 11.7 U I41
2020-10-27 12:55:41 C 10 49 22.45 +06 49 03.6 U I41
2020-10-27 13:02:26 C 10 49 23.19 +06 48 55.6 U I41
2020-11-03 05:59:21 C 11 06 58.91 +03 41 57.3 o Z22
2020-11-03 06:24:46 C 11 07 01.60 +03 41 28.3 o Z22
2020-11-03 12:33:12 C 11 07 40.72 +03 34 32.4 V 703
2020-11-03 12:36:32 C 11 07 41.11 +03 34 26.9 V 703
2020-11-03 12:39:53 C 11 07 41.43 +03 34 23.5 V 703
2020-11-03 12:43:14 C 11 07 41.79 +03 34 20.0 V 703
2020-11-05 14:48:20 C 11 12 58.64 +02 38 07.4 V T05
2020-11-05 14:56:55 C 11 12 59.52 +02 37 58.1 V T05
2020-11-05 15:20:27 C 11 13 01.94 +02 37 31.9 V T05
2020-11-05 15:33:31 C 11 13 03.30 +02 37 17.3 V T05
2020-11-17 15:00:41 C 11 41 42.82 -02 28 23.7 V T05
2020-11-17 15:19:57 C 11 41 44.62 -02 28 43.2 V T05
2020-11-17 15:34:39 C 11 41 45.99 -02 28 58.2 V T05
2020-11-17 15:44:34 C 11 41 46.92 -02 29 08.3 V T05
2020-11-20 12:36:08 C 11 48 14.28 -03 38 07.1 V 703
2020-11-20 12:42:18 C 11 48 14.86 -03 38 13.1 V 703
2020-11-20 12:48:27 C 11 48 15.41 -03 38 19.2 V 703
2020-11-20 12:54:37 C 11 48 15.99 -03 38 25.3 V 703
2020-11-23 12:22:48 C 11 54 48.29 -04 48 16.2 V 703
2020-11-23 12:30:18 C 11 54 48.93 -04 48 23.7 V 703
2020-11-23 12:37:48 C 11 54 49.64 -04 48 30.9 V 703
2020-11-23 12:45:19 C 11 54 50.27 -04 48 38.1 V 703
2020-11-26 12:45:28 C 12 01 15.37 -05 57 16.1 V 703
2020-11-26 12:50:40 C 12 01 15.87 -05 57 21.9 V 703
2020-11-26 12:55:52 C 12 01 16.38 -05 57 26.1 V 703
2020-11-26 13:01:04 C 12 01 16.76 -05 57 31.5 V 703
2020-12-01 15:26:02 C 12 11 48.85 -07 50 20.2 V T08
2020-12-01 15:43:22 C 12 11 50.27 -07 50 35.8 V T08
2020-12-01 15:50:00 C 12 11 50.82 -07 50 41.8 V T08
2020-12-03 15:15:12 C 12 15 47.93 -08 33 07.7 V T05
2020-12-03 15:22:33 C 12 15 48.54 -08 33 14.0 V T05
2020-12-03 15:44:36 C 12 15 50.32 -08 33 33.8 V T05
2020-12-03 15:52:32 C 12 15 50.96 -08 33 40.9 V T05
2020-12-04 12:16:17 C 12 17 31.30 -08 51 40.7 V 703
2020-12-04 12:24:21 C 12 17 31.98 -08 51 47.9 V 703
2020-12-04 12:32:25 C 12 17 32.64 -08 51 55.5 V 703
2020-12-04 12:40:30 C 12 17 33.30 -08 52 02.6 V 703
2020-12-07 11:58:49 C 12 23 18.86 -09 54 06.6 V 703
2020-12-07 12:06:46 C 12 23 19.45 -09 54 14.1 V 703
2020-12-07 12:14:43 C 12 23 20.08 -09 54 20.7 V 703
2020-12-07 12:22:41 C 12 23 20.71 -09 54 27.4 V 703
2020-12-07 14:15:03 C 12 23 29.78 -09 56 02.4 V T05
2020-12-07 14:19:40 C 12 23 30.13 -09 56 06.4 V T05
2020-12-07 14:29:43 C 12 23 30.92 -09 56 15.0 V T05
2020-12-07 14:44:16 C 12 23 32.06 -09 56 27.6 V T05
2020-12-09 15:10:56 C 12 27 20.55 -10 37 40.9 V T08
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)