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
1983-04-11 08:18:57 A 17 14 35.35 -32 50 12.0 809
1983-04-11 09:16:49 A 17 14 35.47 -32 50 16.4 809
1983-04-18 07:44:28 A 17 13 53.81 -33 03 18.7 809
1983-04-18 08:14:22 A 17 13 53.44 -33 03 20.6 809
1983-04-19 09:20:45 A 17 13 34.12 -33 04 54.0 809
1983-04-19 09:43:50 A 17 13 33.77 -33 04 55.9 809
1983-04-20 07:21:38 A 17 13 14.73 -33 06 12.7 809
1983-04-20 07:56:33 A 17 13 14.07 -33 06 14.4 809
1984-02-09 00:08:27 A 03 06 47.99 +04 55 05.2 A 801
1984-03-01 22:52:42 A 05 32 22.22 +06 56 13.3 491
1984-03-05 00:19:38 A 05 47 19.73 +07 02 35.9 A 801
1984-03-05 22:04:03 A 05 51 32.74 +07 04 10.5 491
1984-03-28 01:20:52 A 07 14 24.56 +07 08 04.4 A 801
1984-04-29 01:54:19 A 08 38 52.12 +05 39 30.4 A 801
1984-05-06 01:00:21 A 08 54 44.80 +05 06 57.1 A 801
1986-05-01 02:23:25 A 14 00 56.52 -29 02 02.4 808
1986-05-01 03:14:17 A 14 00 52.28 -29 01 34.7 808
1986-05-08 02:39:46 A 13 48 17.20 -27 24 02.8 808
1986-05-08 03:24:39 A 13 48 13.92 -27 23 36.6 808
1986-05-12 09:30:12 A 13 41 20.26 -26 19 59.8 474
1986-05-12 09:49:07 A 13 41 19.05 -26 19 49.1 474
1988-05-24 17:59:01 A 20 58 25.17 -17 27 00.4 474
1988-05-24 18:17:40 A 20 58 26.49 -17 26 47.9 474
1988-06-11 07:25:43 A 21 28 41.63 -11 46 46.6 A 801
1988-06-14 07:07:00 A 21 33 54.44 -10 31 44.7 A 801
1988-06-16 09:21:05 A 21 37 36.00 -09 35 12.0 657
1988-06-16 09:47:06 A 21 37 37.78 -09 34 40.9 657
1988-07-08 08:53:06 A 22 22 33.48 +05 47 42.8 657
1988-07-08 09:31:06 A 22 22 37.29 +05 49 21.9 657
1988-07-11 00:18:59 A 22 29 40.24 +08 43 20.1 026
1988-07-11 06:58:50 A 22 30 27.04 +09 02 59.7 801
1988-07-11 20:55:54 A 22 32 08.11 +09 44 53.7 190
1988-07-11 21:25:54 A 22 32 11.53 +09 46 23.6 190
1988-07-12 01:09:45 A 22 32 38.99 +09 57 47.9 491
1988-07-12 01:23:43 A 22 32 40.79 +09 58 30.6 491
1988-07-13 00:40:52 A 22 35 35.53 +11 11 27.6 491
1988-07-13 00:53:51 A 22 35 37.11 +11 12 06.8 491
1988-07-14 10:21:59 22 40 00.39 +13 02 43.0 261
1988-07-14 11:12:00 22 40 06.80 +13 05 33.2 261
1988-07-16 07:45:29 A 22 46 27.75 +15 43 29.3 657
1988-07-16 08:44:00 A 22 46 36.19 +15 47 06.4 657
1988-07-19 00:40:00 A 22 56 49.32 +19 57 32.1 13.5 026
1988-07-19 09:02:06 A 22 58 16.72 +20 32 23.2 657
1988-07-19 23:34:29 A 23 00 52.90 +21 34 08.0 017
1988-07-19 23:41:29 A 23 00 54.17 +21 34 39.2 017
1988-07-19 23:52:29 A 23 00 56.10 +21 35 25.6 017
1988-07-20 07:46:05 A 23 02 23.50 +22 09 35.6 657
1988-08-05 07:09:06 A 01 23 14.06 +54 51 14.1 657
1988-08-08 01:09:29 A 02 13 06.54 +59 08 37.5 026
1988-08-11 08:23:05 A 03 23 51.62 +62 10 38.7 657
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)