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
2024-05-29 00:26:18 C 10 01 29.870 +00 36 53.28 V W68
2024-05-29 00:32:11 C 10 01 30.329 +00 36 52.52 V W68
2024-05-29 00:55:06 C 10 01 32.093 +00 36 47.41 V W68
2024-05-30 06:26:47 C 10 03 47.237 +00 30 08.53 V T05
2024-05-30 06:44:30 C 10 03 48.576 +00 30 04.72 V T05
2024-05-30 07:00:49 C 10 03 49.812 +00 30 00.94 V T05
2024-06-01 04:15:14 C 10 07 16.828 +00 19 39.18 V 703
2024-06-01 04:18:34 C 10 07 17.072 +00 19 39.04 V 703
2024-06-01 04:21:54 C 10 07 17.324 +00 19 38.21 V 703
2024-06-01 04:25:15 C 10 07 17.537 +00 19 37.38 V 703
2024-06-01 23:25:23 C 10 08 44.626 +00 15 17.06 V W68
2024-06-01 23:47:41 C 10 08 46.265 +00 15 11.70 V W68
2024-06-02 00:08:12 C 10 08 47.818 +00 15 07.24 V W68
2024-06-02 00:12:46 C 10 08 48.137 +00 15 05.58 V W68
2024-06-03 04:16:22 C 10 10 56.356 +00 08 18.89 V 703
2024-06-03 04:19:42 C 10 10 56.518 +00 08 18.28 V 703
2024-06-03 04:23:02 C 10 10 56.788 +00 08 17.52 V 703
2024-06-03 04:26:23 C 10 10 57.043 +00 08 17.20 V 703
2024-06-03 06:01:07 C 10 11 04.361 +00 07 55.52 V T05
2024-06-03 06:05:41 C 10 11 04.699 +00 07 54.52 V T05
2024-06-03 06:16:06 C 10 11 05.477 +00 07 51.89 V T05
2024-06-03 06:30:25 C 10 11 06.550 +00 07 48.47 V T05
2024-06-27 06:50:16 C 10 54 47.700 -02 34 21.54 V T05
2024-06-27 07:16:01 C 10 54 49.627 -02 34 29.35 V T05
2024-06-27 07:20:41 C 10 54 49.990 -02 34 31.19 V T05
2024-06-27 07:31:29 C 10 54 50.789 -02 34 34.32 V T05
2024-06-27 17:15:12 C 10 55 34.997 -02 37 35.80 V M22
2024-06-27 17:35:59 C 10 55 36.550 -02 37 42.53 V M22
2024-06-27 17:40:38 C 10 55 36.888 -02 37 43.64 V M22
2024-06-27 17:48:02 C 10 55 37.457 -02 37 46.06 V M22
2024-06-29 23:05:21 C 10 59 38.868 -02 54 52.02 V W68
2024-06-29 23:13:12 C 10 59 39.480 -02 54 54.72 V W68
2024-06-29 23:41:58 C 10 59 41.604 -02 55 04.19 V W68
2024-07-15 22:59:30 C 11 28 38.940 -05 06 02.77 V W68
2024-07-15 23:04:02 C 11 28 39.298 -05 06 04.57 V W68
2024-07-15 23:33:58 C 11 28 41.494 -05 06 15.98 V W68
2024-07-15 23:41:46 C 11 28 42.113 -05 06 18.50 V W68
2024-07-25 23:30:02 C 11 46 51.84 -06 33 58.0 X W84
2024-07-25 23:42:23 C 11 46 52.76 -06 34 02.8 X W84
2024-07-25 23:54:55 C 11 46 53.71 -06 34 07.5 X W84
2024-07-28 00:11:30 C 11 50 33.626 -06 52 11.21 V W68
2024-07-28 00:16:04 C 11 50 34.039 -06 52 12.11 V W68
2024-07-28 00:39:49 C 11 50 35.765 -06 52 21.36 V W68
2024-07-28 00:45:47 C 11 50 36.250 -06 52 23.56 V W68
2025-04-16 09:11:50 C 22 30 05.537 -06 14 55.00 V W68
2025-04-16 09:17:17 C 22 30 06.288 -06 14 48.70 V W68
2025-04-16 09:50:48 C 22 30 11.186 -06 14 12.98 V W68
2025-04-16 09:59:49 C 22 30 12.482 -06 14 03.34 V W68
2025-12-08 12:27:18 C 13 27 17.615 -17 02 22.99 V 703
2025-12-08 12:30:37 C 13 27 17.950 -17 02 24.47 V 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)