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
2000-02-27 18:58:26 C 05 58 15.50 +03 24 29.7 z 151
2000-02-29 02:57:45 C 06 04 14.786 +03 31 13.30 l 689
2000-03-02 18:35:14 C 06 15 31.65 +03 43 37.2 610
2000-03-02 18:40:14 C 06 15 32.49 +03 43 38.1 610
2000-03-02 18:45:13 C 06 15 33.32 +03 43 39.1 610
2000-03-02 18:50:13 C 06 15 34.16 +03 43 40.1 610
2000-03-02 18:55:14 C 06 15 34.99 +03 43 41.0 610
2000-03-03 02:58:38 C 06 16 57.446 +03 45 13.01 l 689
2000-03-04 02:59:18 C 06 20 58.815 +03 49 34.44 l 689
2000-03-04 19:06:28 C 06 23 37.50 +03 52 22.6 610
2000-03-04 19:10:28 C 06 23 38.14 +03 52 23.2 610
2000-03-04 19:14:27 C 06 23 38.79 +03 52 23.9 610
2000-03-04 19:18:27 C 06 23 39.43 +03 52 24.6 610
2000-03-04 19:22:28 C 06 23 40.08 +03 52 25.3 610
2000-03-06 04:01:02 C 06 28 53.41 +03 58 00.5 c 704
2000-03-06 04:20:08 C 06 28 56.36 +03 58 03.7 c 704
2000-03-06 04:39:13 C 06 28 59.27 +03 58 06.7 c 704
2000-03-06 04:58:19 C 06 29 02.23 +03 58 09.6 c 704
2000-03-06 05:17:24 C 06 29 05.16 +03 58 12.7 c 704
2000-03-06 19:02:09 C 06 31 14.75 +04 00 25.8 610
2000-03-06 19:07:09 C 06 31 15.50 +04 00 26.6 610
2000-03-06 19:12:10 C 06 31 16.25 +04 00 27.5 610
2000-03-06 19:12:38 C 06 31 16.35 +04 00 26.1 z 151
2000-03-06 19:17:10 C 06 31 17.00 +04 00 28.3 610
2000-03-06 19:19:25 C 06 31 17.41 +04 00 27.8 z 151
2000-03-06 19:22:09 C 06 31 17.74 +04 00 29.2 610
2000-03-06 19:23:00 C 06 31 17.96 +04 00 28.3 z 151
2000-03-07 18:37:36 C 06 34 52.20 +04 04 09.3 118
2000-03-07 18:43:31 C 06 34 53.08 +04 04 10.2 118
2000-03-11 20:04:04 C 06 49 03.59 +04 18 07.2 z 151
2000-03-11 20:16:22 C 06 49 05.24 +04 18 08.9 z 151
2000-03-11 20:18:41 C 06 49 05.58 +04 18 08.9 z 151
2000-03-11 20:23:39 C 06 49 06.23 +04 18 09.6 z 151
2000-03-12 02:55:59 C 06 50 01.254 +04 19 03.20 l 689
2000-03-12 18:48:40 C 06 52 12.84 +04 21 01.9 z 151
2000-03-12 18:53:58 C 06 52 13.57 +04 21 02.2 z 151
2000-03-12 18:59:29 C 06 52 14.30 +04 21 03.1 z 151
2000-03-12 19:06:44 C 06 52 15.28 +04 21 04.1 z 151
2000-03-12 19:35:31 C 06 52 19.04 +04 21 07.4 118
2000-03-12 19:41:00 C 06 52 19.78 +04 21 08.1 118
2000-03-14 02:54:55 C 06 56 34.003 +04 24 57.28 l 689
2000-03-19 03:59:38 C 07 12 06.20 +04 37 18.0 i 670
2000-03-19 04:25:15 C 07 12 09.27 +04 37 20.2 i 670
2000-03-21 20:24:59 C 07 19 52.85 +04 42 21.8 z 151
2000-03-21 20:29:28 C 07 19 53.35 +04 42 22.2 z 151
2000-03-21 20:42:43 C 07 19 54.89 +04 42 23.1 z 151
2000-03-21 20:44:50 C 07 19 55.15 +04 42 23.4 z 151
2000-03-24 00:02:59 C 07 25 54.67 +04 45 59.5 z 808
2000-03-24 01:00:00 C 07 26 01.06 +04 46 02.8 z 808
2000-03-27 23:44:45 C 07 36 39.56 +04 50 35.1 z 808
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)