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
2024-03-24 21:12:47 C 07 57 23.688 +01 38 22.78 Z C23
2024-03-24 21:13:52 B 07 57 23.683 +01 38 24.25 Z C95
2024-03-24 21:15:06 C 07 57 23.890 +01 38 23.82 Z C23
2024-03-24 22:00:07 B 07 57 27.574 +01 38 33.22 Z C95
2024-03-24 22:48:12 B 07 57 31.639 +01 38 42.18 Z C95
2024-03-26 02:52:07 C 07 59 56.719 +01 44 11.18 V W68
2024-03-26 02:56:12 C 07 59 57.043 +01 44 11.83 V W68
2024-03-26 03:11:19 C 07 59 58.310 +01 44 14.68 V W68
2024-03-26 03:35:47 C 08 00 00.343 +01 44 19.00 V W68
2024-03-26 18:10:19 C 08 01 15.86 +01 46 38.8 X G02
2024-03-26 18:15:47 C 08 01 16.32 +01 46 40.0 X G02
2024-03-26 18:21:03 C 08 01 16.76 +01 46 40.2 X G02
2024-03-27 00:57:42 B 08 01 50.18 +01 48 00.5 q X33
2024-03-27 00:59:44 B 08 01 50.56 +01 48 00.4 q X33
2024-03-27 01:01:47 B 08 01 50.69 +01 48 02.2 q X33
2024-03-27 08:28:24 C 08 02 28.577 +01 49 11.71 V T05
2024-03-27 08:32:24 C 08 02 28.910 +01 49 12.29 V T05
2024-03-27 08:41:38 C 08 02 29.671 +01 49 14.02 V T05
2024-03-27 08:59:27 C 08 02 31.145 +01 49 16.93 V T05
2024-03-27 19:50:19 C 08 03 26.993 +01 51 00.83 Z C23
2024-03-27 19:53:47 C 08 03 27.310 +01 51 01.51 Z C23
2024-03-28 04:06:46 C 08 04 09.005 +01 52 25.39 V 703
2024-03-28 04:10:08 C 08 04 09.307 +01 52 26.40 V 703
2024-03-28 04:13:30 C 08 04 09.581 +01 52 27.01 V 703
2024-03-28 04:16:51 C 08 04 09.851 +01 52 27.62 V 703
2024-03-29 06:42:40 C 08 06 24.074 +01 56 41.21 V T08
2024-03-29 06:52:30 C 08 06 24.862 +01 56 42.72 V T08
2024-03-29 07:08:32 C 08 06 26.172 +01 56 45.24 V T08
2024-03-29 07:12:42 C 08 06 26.510 +01 56 45.78 V T08
2024-03-30 01:52:14 C 08 08 00.715 +01 59 44.45 V W68
2024-03-30 01:56:50 C 08 08 01.097 +01 59 45.06 V W68
2024-03-30 02:11:21 C 08 08 02.273 +01 59 47.29 V W68
2024-03-30 02:19:50 C 08 08 02.964 +01 59 48.41 V W68
2024-03-30 04:18:29 C 08 08 13.027 +01 59 53.34 V 703
2024-03-30 04:21:49 C 08 08 13.297 +01 59 53.66 V 703
2024-03-30 04:25:08 C 08 08 13.571 +01 59 53.99 V 703
2024-03-30 04:28:28 C 08 08 13.844 +01 59 54.85 V 703
2024-03-31 07:30:01 C 08 10 29.654 +02 03 46.66 V T05
2024-03-31 07:34:34 C 08 10 30.017 +02 03 47.34 V T05
2024-03-31 07:44:32 C 08 10 30.826 +02 03 48.67 V T05
2024-03-31 07:59:41 C 08 10 32.045 +02 03 50.69 V T05
2024-03-31 18:57:07 C 08 11 27.178 +02 05 30.01 V M22
2024-03-31 19:10:53 C 08 11 28.246 +02 05 31.63 V M22
2024-03-31 19:16:12 C 08 11 28.79 +02 05 17.0 Y 557
2024-03-31 19:31:26 C 08 11 30.01 +02 05 19.1 Y 557
2024-03-31 20:03:10 C 08 11 32.482 +02 05 38.69 V M22
2024-03-31 20:06:55 C 08 11 32.91 +02 05 23.8 Y 557
2024-04-01 20:29:29 C 08 13 34.625 +02 08 32.39 Z C23
2024-04-01 20:32:21 C 08 13 34.850 +02 08 32.53 Z C23
2024-04-01 20:35:15 C 08 13 35.069 +02 08 32.50 Z C23
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)