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
2024-01-29 19:11:05 C 04 02 43.20 -10 33 18.4 V M14
2024-01-29 19:39:30 C 04 02 57.12 -10 32 50.4 V M14
2024-01-29 20:08:12 C 04 03 11.17 -10 32 21.8 V M14
2024-01-30 03:10:49 C 04 06 39.605 -10 24 14.94 V W68
2024-01-30 03:40:31 C 04 06 53.933 -10 23 44.81 V W68
2024-01-30 04:05:28 C 04 07 05.988 -10 23 19.43 V W68
2024-01-30 17:25:12 C 04 13 35.140 -10 11 09.07 V 089
2024-01-30 17:28:05 C 04 13 36.484 -10 11 06.11 V 089
2024-01-30 17:30:58 C 04 13 37.829 -10 11 03.43 V 089
2024-01-30 17:33:50 C 04 13 39.148 -10 11 00.29 V 089
2024-01-30 17:36:43 C 04 13 40.485 -10 10 57.83 V 089
2024-01-30 17:39:36 C 04 13 41.818 -10 10 55.01 V 089
2024-01-30 17:42:29 C 04 13 43.157 -10 10 51.96 V 089
2024-01-30 17:45:21 C 04 13 44.492 -10 10 49.20 V 089
2024-01-30 17:48:13 C 04 13 45.815 -10 10 45.98 V 089
2024-01-31 00:45:19 C 04 17 02.00 -10 03 46.3 q X04
2024-01-31 01:14:23 C 04 17 15.21 -10 03 17.2 q X04
2024-01-31 01:46:09 C 04 17 29.62 -10 02 44.8 q X04
2024-01-31 09:01:42 C 04 20 48.989 -09 55 04.87 V T05
2024-01-31 09:06:17 C 04 20 51.036 -09 55 00.08 V T05
2024-01-31 09:14:07 C 04 20 54.533 -09 54 51.91 V T05
2024-01-31 09:31:14 C 04 21 02.172 -09 54 34.13 V T05
2024-01-31 20:53:51 C 04 26 09.780 -09 42 17.82 V M22
2024-01-31 20:58:30 C 04 26 11.765 -09 42 12.92 V M22
2024-01-31 21:37:53 C 04 26 28.846 -09 41 32.24 V M22
2024-02-01 17:40:24 C 04 35 09.86 -09 22 22.1 Y 557
2024-02-01 18:10:35 C 04 35 22.23 -09 21 51.7 Y 557
2024-02-01 18:40:46 C 04 35 34.56 -09 21 21.3 Y 557
2024-02-01 19:10:24 C 04 35 46.67 -09 20 51.2 Y 557
2024-02-01 19:41:50 C 04 35 59.53 -09 20 19.4 Y 557
2024-02-01 20:10:54 C 04 36 11.37 -09 19 49.9 Y 557
2024-02-01 20:40:33 C 04 36 23.44 -09 19 19.8 Y 557
2024-02-02 07:36:58 C 04 40 52.786 -09 07 58.69 V T08
2024-02-02 07:41:37 C 04 40 54.605 -09 07 53.98 V T08
2024-02-02 07:51:49 C 04 40 58.601 -09 07 43.54 V T08
2024-02-02 08:00:21 C 04 41 01.946 -09 07 34.86 V T08
2024-02-02 08:05:00 C 04 41 03.770 -09 07 30.11 V T08
2024-02-02 08:07:00 C 04 41 04.546 -09 07 28.06 V T08
2024-02-02 08:13:56 C 04 41 07.272 -09 07 20.96 V T08
2024-02-02 08:46:48 C 04 41 20.155 -09 06 47.34 V T08
2024-02-03 02:05:52 C 04 48 10.843 -08 48 46.33 V W68
2024-02-03 02:21:05 C 04 48 16.534 -08 48 31.03 V W68
2024-02-03 02:26:20 C 04 48 18.494 -08 48 25.70 V W68
2024-02-03 02:38:32 C 04 48 23.047 -08 48 13.39 V W68
2024-02-03 17:59:24 C 04 54 12.679 -08 33 57.13 X M26
2024-02-03 18:01:31 C 04 54 13.450 -08 33 54.97 X M26
2024-02-03 18:03:40 C 04 54 14.206 -08 33 52.96 X M26
2024-02-04 01:40:03 B 04 56 59.21 -08 25 50.6 q X33
2024-02-04 01:49:18 B 04 57 02.41 -08 25 41.1 q X33
2024-02-04 01:51:36 B 04 57 03.29 -08 25 38.6 q X33
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)