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
2016-02-22 02:55:15 C 06 20 59.47 -01 28 45.3 u H21
2016-02-22 02:57:12 C 06 20 59.79 -01 28 44.3 u H21
2016-02-23 01:20:55 C 06 24 43.09 -01 18 14.2 u H21
2016-02-23 01:22:52 C 06 24 43.40 -01 18 13.4 u H21
2016-02-23 01:24:50 C 06 24 43.70 -01 18 12.4 u H21
2016-02-23 01:26:47 C 06 24 44.01 -01 18 11.6 u H21
2016-02-23 01:28:45 C 06 24 44.32 -01 18 10.5 u H21
2016-02-23 01:30:43 C 06 24 44.63 -01 18 09.7 u H21
2016-02-23 01:32:40 C 06 24 44.94 -01 18 08.8 u H21
2016-02-23 01:34:38 C 06 24 45.25 -01 18 07.9 u H21
2016-02-23 01:36:35 C 06 24 45.55 -01 18 07.0 u H21
2016-02-23 01:38:32 C 06 24 45.86 -01 18 06.1 u H21
2016-02-23 01:40:29 C 06 24 46.17 -01 18 05.2 u H21
2016-02-23 01:42:26 C 06 24 46.47 -01 18 04.3 u H21
2016-02-23 01:44:23 C 06 24 46.78 -01 18 03.4 u H21
2016-02-23 01:46:20 C 06 24 47.09 -01 18 02.6 u H21
2016-02-23 01:48:05 C 06 24 47.36 -01 18 01.7 u H21
2016-02-23 01:50:02 C 06 24 47.67 -01 18 00.7 u H21
2016-02-24 20:13:41 C 06 31 30.16 -00 58 56.8 o Z80
2016-02-24 20:15:52 C 06 31 30.50 -00 58 56.3 o Z80
2016-02-24 20:18:04 C 06 31 30.86 -00 58 55.6 o Z80
2016-02-24 20:20:16 C 06 31 31.16 -00 58 54.6 o Z80
2016-02-24 20:22:17 C 06 31 31.47 -00 58 53.9 o Z80
2016-02-24 20:23:48 C 06 31 31.69 -00 58 52.8 o Z80
2016-02-24 20:25:34 C 06 31 31.97 -00 58 52.3 o Z80
2016-02-24 20:27:23 C 06 31 32.24 -00 58 51.8 o Z80
2016-02-25 11:25:22 C 06 33 48.94 -00 52 14.7 o 300
2016-02-25 11:29:51 C 06 33 49.62 -00 52 12.9 o 300
2016-02-25 11:34:23 C 06 33 50.27 -00 52 11.0 o 300
2016-02-25 11:38:51 C 06 33 50.92 -00 52 09.1 o 300
2016-02-25 11:43:23 C 06 33 51.56 -00 52 07.1 o 300
2016-02-25 11:47:51 C 06 33 52.23 -00 52 05.4 o 300
2016-02-27 03:48:06 C 06 39 44.90 -00 35 13.0 R G45
2016-02-27 03:54:50 C 06 39 45.82 -00 35 10.4 R G45
2016-02-27 04:14:01 C 06 39 48.48 -00 35 02.4 R G45
2016-02-27 04:21:06 C 06 39 49.46 -00 34 59.4 R G45
2016-02-27 08:21:56 C 06 40 23.58 -00 33 16.1 L T05
2016-02-27 08:52:25 C 06 40 27.76 -00 33 03.7 L T05
2016-02-27 09:23:22 C 06 40 32.02 -00 32 51.0 L T05
2016-02-27 09:53:53 C 06 40 36.23 -00 32 38.5 L T05
2016-03-02 19:10:14 C 06 54 45.33 +00 07 39.9 q K73
2016-03-02 19:23:32 C 06 54 46.87 +00 07 42.6 q K73
2016-03-02 19:32:00 C 06 54 48.01 +00 07 47.6 q K73
2016-03-02 20:02:21 C 06 54 51.71 +00 07 58.5 q K73
2016-03-02 20:07:09 C 06 54 52.28 +00 08 00.3 q K73
2016-03-03 20:48:28 C 06 57 58.09 +00 16 44.1 q 160
2016-03-03 20:50:46 C 06 57 58.34 +00 16 45.3 q 160
2016-03-03 20:52:37 C 06 57 58.56 +00 16 45.9 q 160
2016-03-04 18:28:52 C 07 00 38.15 +00 24 13.0 q K73
2016-03-04 18:32:47 C 07 00 38.59 +00 24 14.4 q K73
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)