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
2024-01-10 02:12:35 C 23 15 35.550 -10 37 53.29 V 703
2024-01-10 02:15:55 C 23 15 37.069 -10 37 55.78 V 703
2024-01-10 02:19:16 C 23 15 38.560 -10 37 58.44 V 703
2024-01-13 02:02:00 C 23 51 42.336 -11 32 57.26 V 703
2024-01-13 02:05:18 C 23 51 44.096 -11 32 59.71 V 703
2024-01-13 02:08:35 C 23 51 45.853 -11 33 02.02 V 703
2024-01-13 02:11:53 C 23 51 47.617 -11 33 04.25 V 703
2024-01-13 04:57:28 C 23 53 18.295 -11 34 56.71 V T08
2024-01-13 05:01:38 C 23 53 20.546 -11 34 59.74 V T08
2024-01-13 05:13:29 C 23 53 26.885 -11 35 08.16 V T08
2024-01-13 05:27:56 C 23 53 34.630 -11 35 18.46 V T08
2024-01-15 16:12:50 C 00 27 56.332 -12 15 22.34 g K99
2024-01-15 16:13:56 C 00 27 56.980 -12 15 23.03 g K99
2024-01-15 16:15:01 C 00 27 57.520 -12 15 23.36 g K99
2024-01-15 16:37:55 C 00 28 11.486 -12 15 37.38 g K99
2024-01-15 16:39:01 C 00 28 12.235 -12 15 37.53 g K99
2024-01-15 16:40:07 C 00 28 12.778 -12 15 37.89 g K99
2024-01-15 16:55:22 C 00 28 22.062 -12 15 47.46 g K99
2024-01-15 16:56:28 C 00 28 22.686 -12 15 47.60 g K99
2024-01-15 16:58:39 C 00 28 24.090 -12 15 49.40 g K99
2024-01-15 17:00:51 C 00 28 25.424 -12 15 50.53 g K99
2024-01-15 17:01:57 C 00 28 26.040 -12 15 51.04 g K99
2024-01-17 05:06:34 C 00 51 20.897 -12 34 08.80 V T08
2024-01-17 05:16:32 C 00 51 27.221 -12 34 12.86 V T08
2024-01-17 05:22:22 C 00 51 30.912 -12 34 15.20 V T08
2024-01-17 05:37:43 C 00 51 40.675 -12 34 21.47 V T08
2024-01-19 03:05:04 C 01 22 01.031 -12 48 48.60 V 703
2024-01-19 03:08:20 C 01 22 03.202 -12 48 49.07 V 703
2024-01-19 03:11:36 C 01 22 05.380 -12 48 49.50 V 703
2024-01-19 03:14:51 C 01 22 07.547 -12 48 50.04 V 703
2024-01-20 17:08:05 B 01 48 06.922 -12 51 28.01 X K74
2024-01-20 17:10:11 B 01 48 08.330 -12 51 27.83 X K74
2024-01-20 17:12:38 B 01 48 09.982 -12 51 27.72 X K74
2024-01-20 17:14:34 B 01 48 11.302 -12 51 27.54 X K74
2024-01-21 06:17:56 C 01 57 07.615 -12 49 42.89 V T08
2024-01-21 06:22:44 C 01 57 10.822 -12 49 42.10 V T08
2024-01-21 06:30:59 C 01 57 16.375 -12 49 40.73 V T08
2024-01-21 06:57:15 C 01 57 34.027 -12 49 35.94 V T08
2024-01-22 00:58:25 C 02 09 54.823 -12 44 58.56 V W68
2024-01-22 01:29:07 C 02 10 15.341 -12 44 49.52 V W68
2024-01-22 01:53:40 C 02 10 31.788 -12 44 42.04 V W68
2024-01-22 02:12:17 C 02 10 44.261 -12 44 36.24 V W68
2024-01-23 07:02:15 C 02 30 13.032 -12 35 08.66 V T05
2024-01-23 07:06:49 C 02 30 16.003 -12 35 06.47 V T05
2024-01-23 07:20:16 C 02 30 24.785 -12 35 00.02 V T05
2024-01-23 07:43:05 C 02 30 39.694 -12 34 48.76 V T05
2024-01-23 15:06:21 C 02 35 36.57 -12 31 24.7 Z C97
2024-01-23 15:15:37 C 02 35 42.56 -12 31 20.1 Z C97
2024-01-23 15:24:33 C 02 35 48.33 -12 31 15.5 Z C97
2024-01-23 19:34:49 C 02 38 32.146 -12 28 06.38 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)