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
2000-03-28 01:06:15 C 07 36 48.26 +04 50 38.3 z 808
2000-04-01 18:35:21 C 07 48 57.04 +04 53 05.2 610
2000-04-01 18:40:20 C 07 48 57.54 +04 53 05.2 610
2000-04-01 18:45:20 C 07 48 58.04 +04 53 05.3 610
2000-04-01 18:50:21 C 07 48 58.54 +04 53 05.3 610
2000-04-01 19:23:49 C 07 49 02.02 +04 53 04.7 z 151
2000-04-01 19:28:32 C 07 49 02.60 +04 53 04.6 z 151
2000-04-01 19:34:38 C 07 49 03.07 +04 53 04.8 z 151
2000-04-01 19:36:26 C 07 49 03.32 +04 53 05.1 z 151
2000-04-05 03:03:27 C 07 57 14.24 +04 53 11.8 c 704
2000-04-05 03:29:20 C 07 57 16.82 +04 53 11.5 c 704
2000-04-05 03:54:52 C 07 57 19.35 +04 53 11.4 c 704
2000-04-05 04:20:04 C 07 57 21.86 +04 53 11.3 c 704
2000-04-05 04:44:41 C 07 57 24.33 +04 53 11.3 c 704
2000-04-06 19:33:22 C 08 01 19.30 +04 52 37.3 c 118
2000-04-06 19:43:38 C 08 01 20.29 +04 52 36.9 c 118
2000-04-06 23:46:59 C 08 01 44.88 +04 52 44.4 z 808
2000-04-07 00:36:30 C 08 01 49.67 +04 52 43.9 z 808
2000-04-07 12:35:53 C 08 03 01.35 +04 52 18.1 m 347
2000-04-07 12:42:12 C 08 03 01.91 +04 52 19.2 m 347
2000-04-07 12:48:14 C 08 03 02.39 +04 52 18.8 m 347
2000-04-07 19:04:30 C 08 03 40.27 +04 52 08.9 610
2000-04-07 19:08:30 C 08 03 40.66 +04 52 08.8 610
2000-04-07 19:12:31 C 08 03 41.04 +04 52 08.8 610
2000-04-07 19:16:31 C 08 03 41.43 +04 52 08.7 610
2000-04-07 19:34:20 C 08 03 43.11 +04 52 08.4 z 151
2000-04-07 19:37:51 C 08 03 43.53 +04 52 07.8 z 151
2000-04-07 19:39:52 C 08 03 43.68 +04 52 08.4 z 151
2000-04-07 19:41:47 C 08 03 43.89 +04 52 08.9 z 151
2000-04-15 19:18:27 C 08 22 16.26 +04 43 28.0 z 151
2000-04-15 19:23:30 C 08 22 16.67 +04 43 28.0 z 151
2000-04-15 19:27:38 C 08 22 17.04 +04 43 27.6 z 151
2000-04-15 19:31:17 C 08 22 17.37 +04 43 27.8 z 151
2000-05-04 03:22:10 C 09 01 55.19 +03 53 55.6 c 704
2000-05-04 03:39:29 C 09 01 56.67 +03 53 52.9 c 704
2000-05-04 03:56:46 C 09 01 58.13 +03 53 50.7 c 704
2000-05-04 04:14:04 C 09 01 59.62 +03 53 47.3 c 704
2000-05-04 04:31:21 C 09 02 01.09 +03 53 44.6 c 704
2002-02-06 11:12:46 C 14 58 17.68 -27 54 58.5 c 704
2002-02-06 11:33:57 C 14 58 18.60 -27 55 05.7 c 704
2002-02-06 11:54:55 C 14 58 19.55 -27 55 13.2 c 704
2002-02-06 12:15:30 C 14 58 20.46 -27 55 20.5 c 704
2002-02-06 12:36:05 C 14 58 21.43 -27 55 27.6 c 704
2002-03-09 11:37:30 C 15 17 48.572 -31 35 54.64 g 689
2002-03-13 11:21:28 C 15 17 36.619 -31 56 07.18 g 689
2002-04-04 09:38:23 C 15 02 02.044 -32 45 59.66 g 689
2002-04-05 09:34:06 C 15 00 43.673 -32 44 54.26 g 689
2002-04-19 08:15:53 C 14 37 58.232 -31 46 42.24 g 689
2002-04-20 08:09:38 C 14 36 06.059 -31 39 14.75 g 689
2002-04-21 08:04:31 C 14 34 12.627 -31 31 22.42 g 689
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)