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
2024-02-04 08:06:02 C 04 59 18.038 -08 19 51.60 V T05
2024-02-04 08:10:36 C 04 59 19.603 -08 19 47.17 V T05
2024-02-04 08:19:13 C 04 59 22.584 -08 19 38.60 V T05
2024-02-04 08:36:30 C 04 59 28.546 -08 19 21.50 V T05
2024-02-05 13:59:16 C 05 09 33.86 -07 51 12.1 O40
2024-02-05 16:54:01 C 05 10 29.67 -07 48 23.3 O40
2024-02-05 17:08:19 C 05 10 34.19 -07 48 10.7 O40
2024-02-05 17:18:17 C 05 10 37.43 -07 48 00.0 O40
2024-02-06 07:39:54 C 05 15 15.631 -07 34 27.91 V T08
2024-02-06 07:44:19 C 05 15 16.961 -07 34 23.84 V T08
2024-02-06 08:06:48 C 05 15 23.798 -07 34 02.68 V T08
2024-02-06 08:19:50 C 05 15 27.763 -07 33 50.40 V T08
2024-02-07 02:11:56 C 05 20 58.330 -07 16 46.99 V W68
2024-02-07 02:16:34 C 05 20 59.674 -07 16 42.78 V W68
2024-02-07 02:25:38 C 05 21 02.311 -07 16 34.50 V W68
2024-02-07 02:55:39 C 05 21 11.054 -07 16 06.82 V W68
2024-02-08 07:36:36 C 05 29 31.080 -06 51 02.09 V T05
2024-02-08 07:41:49 C 05 29 32.465 -06 50 57.41 V T05
2024-02-08 08:04:49 C 05 29 38.662 -06 50 37.14 V T05
2024-02-08 08:13:56 C 05 29 41.117 -06 50 29.00 V T05
2024-02-08 19:54:24 C 05 32 54.756 -06 39 41.65 V M22
2024-02-08 19:59:00 C 05 32 55.966 -06 39 37.73 V M22
2024-02-08 20:06:59 C 05 32 58.056 -06 39 30.74 V M22
2024-02-08 20:22:53 C 05 33 02.230 -06 39 16.92 V M22
2024-02-10 08:01:39 C 05 42 19.752 -06 09 40.46 V T08
2024-02-10 08:05:48 C 05 42 20.746 -06 09 37.04 V T08
2024-02-10 08:16:57 C 05 42 23.422 -06 09 27.76 V T08
2024-02-10 08:32:44 C 05 42 27.214 -06 09 14.58 V T08
2024-02-10 17:02:51 C 05 44 35.30 -06 02 30.0 X G02
2024-02-10 17:04:02 C 05 44 35.69 -06 02 29.5 X G02
2024-02-10 17:05:13 C 05 44 35.94 -06 02 28.0 X G02
2024-02-11 20:36:29 C 05 51 07.426 -05 40 23.41 V Z80
2024-02-11 20:38:06 C 05 51 07.778 -05 40 22.04 V Z80
2024-02-11 20:39:45 C 05 51 08.155 -05 40 20.89 V Z80
2024-02-12 08:01:56 C 05 53 42.895 -05 31 12.83 V T05
2024-02-12 08:06:37 C 05 53 43.906 -05 31 09.12 V T05
2024-02-12 08:15:15 C 05 53 45.766 -05 31 02.42 V T05
2024-02-12 08:40:19 C 05 53 51.178 -05 30 42.88 V T05
2024-02-12 19:49:56 C 05 56 20.455 -05 21 36.68 V M22
2024-02-12 19:54:39 C 05 56 21.446 -05 21 32.98 V M22
2024-02-12 20:02:31 C 05 56 23.107 -05 21 27.07 V M22
2024-02-13 18:46:29 B 06 01 16.207 -05 05 06.43 X K74
2024-02-13 18:51:32 B 06 01 17.232 -05 05 02.76 X K74
2024-02-13 18:56:34 B 06 01 18.254 -05 04 58.91 X K74
2024-02-14 16:48:34 C 06 05 47.35 -04 49 01.9 X G02
2024-02-14 16:53:04 C 06 05 48.23 -04 48 58.6 X G02
2024-02-14 16:57:23 C 06 05 49.06 -04 48 55.5 X G02
2024-02-15 02:08:21 C 06 07 37.128 -04 41 42.04 V W68
2024-02-15 02:16:13 C 06 07 38.611 -04 41 36.46 V W68
2024-02-15 02:20:46 C 06 07 39.466 -04 41 33.18 V W68
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)