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
2024-01-23 19:59:15 C 02 38 47.950 -12 27 52.81 V M22
2024-01-23 20:25:20 C 02 39 04.829 -12 27 38.16 V M22
2024-01-23 20:47:09 C 02 39 18.974 -12 27 25.88 V M22
2024-01-24 17:21:14 B 02 52 44.158 -12 16 52.25 X K74
2024-01-24 17:23:00 B 02 52 45.276 -12 16 51.10 X K74
2024-01-24 17:24:39 B 02 52 46.325 -12 16 50.16 X K74
2024-01-26 02:06:04 C 03 13 09.379 -11 52 24.67 V W68
2024-01-26 02:10:07 C 03 13 11.808 -11 52 21.32 V W68
2024-01-26 02:17:47 C 03 13 16.373 -11 52 15.31 V W68
2024-01-26 02:38:15 C 03 13 28.562 -11 51 58.75 V W68
2024-01-26 17:20:04 B 03 22 20.378 -11 41 26.59 X K74
2024-01-26 17:22:00 B 03 22 21.497 -11 41 24.76 X K74
2024-01-26 17:24:07 B 03 22 22.723 -11 41 23.06 X K74
2024-01-26 17:26:04 B 03 22 23.832 -11 41 21.55 X K74
2024-01-26 17:28:09 B 03 22 25.058 -11 41 19.82 X K74
2024-01-26 17:30:06 B 03 22 26.177 -11 41 18.20 X K74
2024-01-26 17:32:04 B 03 22 27.338 -11 41 16.62 X K74
2024-01-26 17:33:59 B 03 22 28.454 -11 41 14.96 X K74
2024-01-26 17:36:06 B 03 22 29.681 -11 41 13.20 X K74
2024-01-26 17:38:03 B 03 22 30.782 -11 41 11.80 X K74
2024-01-26 17:40:10 B 03 22 32.028 -11 41 09.82 X K74
2024-01-26 17:42:05 B 03 22 33.132 -11 41 08.41 X K74
2024-01-27 08:01:27 C 03 30 50.806 -11 28 31.91 V T05
2024-01-27 08:06:39 C 03 30 53.722 -11 28 27.19 V T05
2024-01-27 08:16:30 C 03 30 59.251 -11 28 18.26 V T05
2024-01-27 08:31:31 C 03 31 07.678 -11 28 04.62 V T05
2024-01-27 17:58:44 C 03 36 32.76 -11 20 01.1 V G17
2024-01-27 17:59:54 C 03 36 33.41 -11 20 00.0 V G17
2024-01-27 18:01:05 C 03 36 34.06 -11 19 58.8 V G17
2024-01-27 18:02:17 C 03 36 34.71 -11 19 58.0 V G17
2024-01-27 18:53:06 B 03 37 02.827 -11 19 15.82 X B72
2024-01-27 18:56:01 B 03 37 04.430 -11 19 13.05 X B72
2024-01-27 19:00:11 B 03 37 06.714 -11 19 09.40 X B72
2024-01-27 19:01:51 B 03 37 07.630 -11 19 07.80 X B72
2024-01-27 19:04:45 B 03 37 09.235 -11 19 05.22 X B72
2024-01-28 17:49:31 C 03 49 36.14 -10 57 57.0 X G02
2024-01-28 17:54:36 C 03 49 38.80 -10 57 52.2 X G02
2024-01-28 17:59:29 C 03 49 41.36 -10 57 47.4 X G02
2024-01-28 21:00:51 B 03 51 16.212 -10 54 53.32 V B50
2024-01-28 21:08:09 B 03 51 19.970 -10 54 46.15 V B50
2024-01-28 21:15:27 B 03 51 23.758 -10 54 39.10 V B50
2024-01-28 21:22:44 B 03 51 27.542 -10 54 32.15 V B50
2024-01-29 05:17:58 C 03 55 36.095 -10 46 43.21 V 703
2024-01-29 05:21:16 C 03 55 37.780 -10 46 39.97 V 703
2024-01-29 05:24:35 C 03 55 39.464 -10 46 36.73 V 703
2024-01-29 05:27:55 C 03 55 41.149 -10 46 33.38 V 703
2024-01-29 14:56:00 C 04 00 32.82 -10 37 17.5 O40
2024-01-29 15:41:55 C 04 00 55.53 -10 36 31.0 O40
2024-01-29 15:55:09 C 04 01 02.11 -10 36 17.8 O40
2024-01-29 17:23:02 C 04 01 45.70 -10 34 49.4 O40
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)