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
2024-02-25 18:39:55 C 06 48 35.27 -02 08 21.9 X K83
2024-02-25 18:44:53 C 06 48 35.89 -02 08 19.6 X K83
2024-02-26 16:06:51 S 06 51 21.208 -01 57 36.24 X 275
2024-02-26 18:39:48 C 06 51 41.875 -01 56 19.79 W M01
2024-02-26 18:42:18 C 06 51 42.181 -01 56 18.57 W M01
2024-02-26 18:44:48 C 06 51 42.486 -01 56 17.34 W M01
2024-02-27 03:41:38 C 06 52 50.309 -01 51 31.43 V W68
2024-02-27 03:57:25 C 06 52 52.231 -01 51 23.72 V W68
2024-02-27 04:02:00 C 06 52 52.793 -01 51 21.60 V W68
2024-02-27 04:22:14 C 06 52 55.272 -01 51 11.59 V W68
2024-02-28 10:23:37 C 06 56 39.619 -01 37 13.80 V T05
2024-02-28 10:28:10 C 06 56 40.159 -01 37 11.64 V T05
2024-02-28 10:37:56 C 06 56 41.326 -01 37 07.18 V T05
2024-02-28 10:52:21 C 06 56 43.051 -01 37 00.37 V T05
2024-02-28 19:48:11 C 06 57 49.243 -01 33 00.17 V 089
2024-02-28 19:50:33 C 06 57 49.497 -01 32 59.10 V 089
2024-02-28 20:02:23 C 06 57 50.898 -01 32 53.47 V 089
2024-02-28 20:07:07 C 06 57 51.451 -01 32 51.19 V 089
2024-02-28 20:45:26 C 06 57 56.014 -01 32 05.24 V M22
2024-02-28 20:50:43 C 06 57 56.626 -01 32 02.80 V M22
2024-02-28 20:58:03 C 06 57 57.480 -01 31 59.41 V M22
2024-02-28 21:16:23 C 06 57 59.614 -01 31 50.95 V M22
2024-02-29 01:02:22 C 06 58 27.45 -01 30 06.2 834
2024-02-29 01:41:52 C 06 58 32.01 -01 29 48.1 834
2024-02-29 17:31:17 C 07 00 26.43 -01 23 06.1 X G02
2024-02-29 17:35:12 C 07 00 26.87 -01 23 04.4 X G02
2024-02-29 17:39:07 C 07 00 27.32 -01 23 02.7 X G02
2024-03-02 20:10:14 C 07 06 18.139 -01 01 00.84 Z C23
2024-03-02 20:12:41 C 07 06 18.418 -01 01 00.05 Z C23
2024-03-02 20:15:35 C 07 06 18.682 -01 00 58.43 Z C23
2024-03-04 17:54:30 C 07 11 22.702 -00 42 11.86 V 089
2024-03-04 17:56:52 C 07 11 22.963 -00 42 10.69 V 089
2024-03-04 17:59:14 C 07 11 23.200 -00 42 09.74 V 089
2024-03-04 18:01:36 C 07 11 23.451 -00 42 08.84 V 089
2024-03-04 18:03:58 C 07 11 23.703 -00 42 07.88 V 089
2024-03-04 18:06:20 C 07 11 23.950 -00 42 06.85 V 089
2024-03-04 18:08:42 C 07 11 24.185 -00 42 06.02 V 089
2024-03-04 18:15:15 C 07 11 25.277 -00 42 04.21 Z C23
2024-03-04 18:17:19 C 07 11 25.510 -00 42 03.46 Z C23
2024-03-04 18:20:37 C 07 11 25.862 -00 42 02.02 Z C23
2024-03-04 18:22:19 C 07 11 25.553 -00 41 56.07 W M01
2024-03-04 18:24:49 C 07 11 25.816 -00 41 55.01 W M01
2024-03-04 18:27:19 C 07 11 26.079 -00 41 53.95 W M01
2024-03-04 18:49:00 C 07 11 28.422 -00 41 49.86 V 089
2024-03-04 18:51:22 C 07 11 28.692 -00 41 48.72 V 089
2024-03-06 00:08:11 C 07 14 37.81 -00 29 55.0 834
2024-03-06 00:46:45 C 07 14 41.76 -00 29 40.3 834
2024-03-06 16:41:32 C 07 16 22.69 -00 24 04.2 q 168
2024-03-06 16:57:34 C 07 16 24.35 -00 23 58.1 q 168
2024-03-06 17:09:35 C 07 16 25.57 -00 23 53.6 q 168
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)