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
2024-04-06 19:20:35 C 08 23 21.39 +02 21 00.9 X G02
2024-04-06 19:26:11 C 08 23 21.83 +02 21 01.4 X G02
2024-04-06 19:31:45 C 08 23 22.27 +02 21 01.9 X G02
2024-04-06 21:03:08 C 08 23 29.562 +02 21 11.29 V L92
2024-04-06 21:12:19 C 08 23 30.286 +02 21 11.65 V L92
2024-04-06 21:22:31 C 08 23 31.033 +02 21 14.03 V L92
2024-04-06 21:32:43 C 08 23 31.894 +02 21 14.45 V L92
2024-04-06 21:42:56 C 08 23 32.772 +02 21 14.83 V L92
2024-04-07 20:31:48 B 08 25 24.540 +02 23 07.51 V 160
2024-04-07 20:39:08 B 08 25 25.181 +02 23 05.96 V 160
2024-04-08 19:02:08 C 08 27 14.39 +02 24 43.6 X G02
2024-04-08 19:06:36 C 08 27 14.75 +02 24 43.7 X G02
2024-04-08 19:11:03 C 08 27 15.10 +02 24 44.2 X G02
2024-04-10 04:10:43 C 08 29 55.504 +02 26 55.32 V 703
2024-04-10 04:14:02 C 08 29 55.763 +02 26 55.64 V 703
2024-04-10 04:17:20 C 08 29 56.015 +02 26 55.64 V 703
2024-04-10 04:20:38 C 08 29 56.274 +02 26 55.82 V 703
2024-04-10 20:08:05 C 08 31 13.068 +02 27 47.81 Z C23
2024-04-10 20:12:21 C 08 31 13.399 +02 27 48.13 Z C23
2024-04-10 20:29:47 C 08 31 14.753 +02 27 48.42 Z C23
2024-04-10 21:51:12 B 08 31 21.13 +02 27 53.6 X M59
2024-04-10 21:53:14 B 08 31 21.13 +02 27 53.5 X M59
2024-04-10 21:55:15 B 08 31 21.54 +02 27 52.0 X M59
2024-04-12 03:46:44 C 08 33 46.199 +02 29 24.79 V 703
2024-04-12 03:50:04 C 08 33 46.458 +02 29 24.76 V 703
2024-04-12 03:53:24 C 08 33 46.717 +02 29 25.12 V 703
2024-04-12 03:56:44 C 08 33 46.984 +02 29 25.12 V 703
2024-04-12 04:00:11 C 08 33 47.254 +02 29 25.22 V G96
2024-04-12 04:08:18 C 08 33 47.891 +02 29 25.66 V G96
2024-04-12 04:16:24 C 08 33 48.524 +02 29 26.02 V G96
2024-04-12 04:24:32 C 08 33 49.169 +02 29 26.30 V G96
2024-04-12 19:07:24 C 08 35 00.42 +02 30 01.6 Y 557
2024-04-12 19:37:52 C 08 35 02.82 +02 30 02.8 Y 557
2024-04-12 20:05:19 C 08 35 04.97 +02 30 03.8 Y 557
2024-04-12 20:38:50 C 08 35 07.62 +02 30 05.2 Y 557
2024-04-12 21:09:19 C 08 35 10.03 +02 30 06.3 Y 557
2024-04-12 21:39:48 C 08 35 12.44 +02 30 07.5 Y 557
2024-04-13 19:31:15 C 08 36 58.138 +02 30 54.72 Z C23
2024-04-13 19:34:28 C 08 36 58.378 +02 30 54.72 Z C23
2024-04-13 19:38:47 C 08 36 58.771 +02 30 54.65 Z C23
2024-04-14 03:47:47 C 08 37 37.873 +02 31 12.47 V 703
2024-04-14 03:51:07 C 08 37 38.136 +02 31 12.50 V 703
2024-04-14 03:54:27 C 08 37 38.392 +02 31 12.76 V 703
2024-04-14 03:57:47 C 08 37 38.651 +02 31 12.72 V 703
2024-04-14 07:34:24 C 08 37 55.927 +02 31 21.00 V T05
2024-04-14 07:55:06 C 08 37 57.547 +02 31 21.50 V T05
2024-04-14 08:26:31 C 08 38 00.017 +02 31 22.51 V T05
2024-04-16 07:15:46 C 08 41 45.058 +02 32 23.35 V T05
2024-04-16 07:20:19 C 08 41 45.413 +02 32 23.32 V T05
2024-04-16 07:28:50 C 08 41 46.085 +02 32 23.35 V T05
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)