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
2021-06-17 06:43:40 C 11 59 16.26 -11 07 37.3 V T05
2021-06-25 06:12:58 C 12 07 43.95 -11 08 09.8 V T05
2021-06-25 06:19:05 C 12 07 44.26 -11 08 09.9 V T05
2021-06-25 06:26:59 C 12 07 44.62 -11 08 10.8 V T05
2021-06-26 06:08:43 C 12 08 51.72 -11 09 04.1 V T08
2021-06-26 06:09:23 C 12 08 51.78 -11 09 04.3 V T08
2021-06-26 06:14:02 C 12 08 51.98 -11 09 04.1 V T08
2021-06-26 06:14:41 C 12 08 52.02 -11 09 04.0 V T08
2021-06-26 06:22:00 C 12 08 52.33 -11 09 04.3 V T08
2021-06-26 06:37:16 C 12 08 53.06 -11 09 05.2 V T08
2021-06-26 06:38:36 C 12 08 53.12 -11 09 05.3 V T08
2021-06-27 07:03:19 C 12 10 03.14 -11 10 10.4 V T08
2021-06-27 07:09:18 C 12 10 03.42 -11 10 10.8 V T08
2021-06-27 07:11:17 C 12 10 03.52 -11 10 10.9 V T08
2021-06-27 07:18:35 C 12 10 03.87 -11 10 11.1 V T08
2021-06-29 06:36:28 C 12 12 22.26 -11 12 48.9 V T05
2021-06-29 06:41:44 C 12 12 22.51 -11 12 49.1 V T05
2021-06-29 06:49:42 C 12 12 22.92 -11 12 49.7 V T05
2021-06-29 07:10:51 C 12 12 23.93 -11 12 50.9 V T05
2021-07-01 06:53:48 C 12 14 46.94 -11 16 08.2 V T08
2021-07-01 06:59:47 C 12 14 47.22 -11 16 08.8 V T08
2021-07-01 07:07:46 C 12 14 47.61 -11 16 09.5 V T08
2021-07-01 07:26:22 C 12 14 48.54 -11 16 10.6 V T08
2021-07-05 06:01:53 C 12 19 41.71 -11 24 31.3 V T08
2021-07-05 06:06:32 C 12 19 41.94 -11 24 31.6 V T08
2021-07-05 06:17:49 C 12 19 42.55 -11 24 32.9 V T08
2021-07-05 06:33:07 C 12 19 43.33 -11 24 34.5 V T08
2021-07-07 06:47:01 C 12 22 17.55 -11 29 43.0 V T05
2021-07-07 06:51:39 C 12 22 17.72 -11 29 43.2 V T05
2021-07-07 06:59:01 C 12 22 18.14 -11 29 43.7 V T05
2021-07-07 07:16:11 C 12 22 19.03 -11 29 45.5 V T05
2021-07-23 06:10:59 C 12 44 23.53 -12 28 36.8 V T05
2021-07-23 06:15:36 C 12 44 23.82 -12 28 37.6 V T05
2021-07-23 06:24:14 C 12 44 24.31 -12 28 39.1 V T05
2021-07-23 06:38:45 C 12 44 25.23 -12 28 42.1 V T05
2021-07-29 06:03:08 C 12 53 21.76 -12 57 31.4 V T08
2021-07-29 06:09:07 C 12 53 22.11 -12 57 32.5 V T08
2021-07-29 06:18:25 C 12 53 22.71 -12 57 33.9 V T08
2021-07-29 06:33:42 C 12 53 23.66 -12 57 37.4 V T08
2021-07-31 05:57:43 C 12 56 25.46 -13 07 48.6 V T05
2021-07-31 06:02:20 C 12 56 25.79 -13 07 48.9 V T05
2021-07-31 06:12:56 C 12 56 26.44 -13 07 51.3 V T05
2021-07-31 06:28:48 C 12 56 27.45 -13 07 54.8 V T05
2021-08-04 00:04:21 C 13 02 16.95 -13 27 54.9 o W92
2021-08-04 00:24:28 C 13 02 18.24 -13 27 59.8 o W92
2023-01-26 08:31:27 C 15 59 31.387 -27 44 38.83 V W68
2023-01-26 08:37:20 C 15 59 31.810 -27 44 40.24 V W68
2023-01-26 08:48:28 C 15 59 32.671 -27 44 42.58 V W68
2023-01-26 08:57:11 C 15 59 33.367 -27 44 44.56 V W68
2023-01-27 02:20:43 C 16 00 53.119 -27 49 02.06 V M22
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)