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
2025-12-08 12:33:56 C 13 27 18.148 -17 02 25.30 V 703
2025-12-08 12:37:15 C 13 27 18.432 -17 02 27.82 V 703
2025-12-21 12:43:20 C 13 51 58.331 -19 54 08.21 V 703
2025-12-21 12:46:32 C 13 51 58.626 -19 54 10.40 V 703
2025-12-21 12:49:44 C 13 51 58.878 -19 54 11.74 V 703
2025-12-21 12:52:56 C 13 51 59.134 -19 54 13.97 V 703
2025-12-26 14:59:34 C 14 01 13.267 -20 56 50.57 V T05
2025-12-26 15:05:26 C 14 01 13.697 -20 56 53.99 V T05
2025-12-26 15:19:48 C 14 01 14.736 -20 57 00.72 V T05
2025-12-26 15:36:57 C 14 01 15.994 -20 57 09.83 V T05
2026-01-01 15:11:56 C 14 11 47.647 -22 07 35.51 V T05
2026-01-01 15:17:10 C 14 11 48.007 -22 07 37.63 V T05
2026-01-01 15:41:30 C 14 11 49.728 -22 07 49.48 V T05
2026-01-01 15:57:20 C 14 11 50.868 -22 07 57.43 V T05
2026-01-14 14:12:59 C 14 33 13.663 -24 28 45.70 V T05
2026-01-14 14:18:13 C 14 33 14.040 -24 28 48.07 V T05
2026-01-14 14:32:45 C 14 33 14.962 -24 28 54.30 V T05
2026-01-14 14:42:36 C 14 33 15.588 -24 28 58.66 V T05
2026-01-16 08:23:42 C 14 35 58.200 -24 46 40.58 V W68
2026-01-16 08:28:59 C 14 35 58.526 -24 46 42.64 V W68
2026-01-16 08:38:37 C 14 35 59.153 -24 46 46.99 V W68
2026-01-17 14:08:45 C 14 37 52.685 -24 59 14.86 V T08
2026-01-17 14:17:58 C 14 37 53.261 -24 59 18.92 V T08
2026-01-17 14:35:38 C 14 37 54.367 -24 59 26.59 V T08
2026-01-17 14:42:53 C 14 37 54.823 -24 59 29.26 V T08
2026-01-18 15:31:13 C 14 39 29.126 -25 09 49.31 X F51
2026-01-18 15:38:08 C 14 39 29.553 -25 09 52.17 X F51
2026-01-18 15:45:02 C 14 39 29.980 -25 09 55.08 X F51
2026-01-18 15:51:56 C 14 39 30.405 -25 09 58.01 X F51
2026-01-20 14:44:26 C 14 42 26.194 -25 29 12.88 V T05
2026-01-20 14:49:01 C 14 42 26.426 -25 29 14.39 V T05
2026-01-20 14:56:55 C 14 42 26.928 -25 29 18.13 V T05
2026-01-20 15:13:56 C 14 42 27.965 -25 29 24.94 V T05
2026-01-21 02:09:03 C 14 43 08.393 -25 33 46.66 V M22
2026-01-21 02:23:29 C 14 43 09.310 -25 33 52.70 V M22
2026-01-21 02:32:45 C 14 43 09.876 -25 33 56.48 V M22
2026-01-21 02:37:20 C 14 43 10.116 -25 33 58.25 V M22
2026-01-22 07:52:37 C 14 44 57.396 -25 45 45.43 V W68
2026-01-22 07:57:14 C 14 44 57.713 -25 45 47.77 V W68
2026-01-22 08:06:35 C 14 44 58.243 -25 45 51.62 V W68
2026-01-22 08:22:01 C 14 44 59.179 -25 45 58.21 V W68
2026-01-22 08:56:05 C 14 45 01.202 -25 46 11.39 V W68
2026-01-24 01:37:01 C 14 47 27.900 -26 02 21.34 V M22
2026-01-24 01:41:36 C 14 47 28.193 -26 02 22.78 V M22
2026-01-24 01:56:15 C 14 47 29.009 -26 02 29.26 V M22
2026-01-24 02:06:14 C 14 47 29.626 -26 02 32.75 V M22
2026-01-30 02:04:25 C 14 55 44.393 -26 57 48.13 V M22
2026-01-30 02:08:59 C 14 55 44.626 -26 57 49.75 V M22
2026-01-30 02:28:48 C 14 55 45.710 -26 57 57.67 V M22
2026-01-30 02:42:48 C 14 55 46.447 -26 58 02.93 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)