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
2004-06-04 18:07:38 C 21 41 32.14 -11 16 24.2 m 300
2004-06-12 08:59:24 C 21 58 56.22 -07 52 25.3 c 704
2004-06-12 09:03:44 C 21 58 56.75 -07 52 20.4 o 699
2004-06-12 09:13:53 C 21 58 57.59 -07 52 07.3 c 704
2004-06-12 09:28:15 C 21 58 59.10 -07 51 50.2 o 699
2004-06-12 09:28:24 C 21 58 59.01 -07 51 49.7 c 704
2004-06-12 09:35:01 C 21 58 59.74 -07 51 41.2 d 703
2004-06-12 09:42:54 C 21 59 00.39 -07 51 31.6 c 704
2004-06-12 09:48:56 C 21 59 01.09 -07 51 23.6 d 703
2004-06-12 09:52:46 C 21 59 01.46 -07 51 19.8 o 699
2004-06-12 09:57:24 C 21 59 01.77 -07 51 14.1 c 704
2004-06-12 10:02:47 C 21 59 02.39 -07 51 06.8 d 703
2004-06-12 10:16:33 C 21 59 03.71 -07 50 49.8 d 703
2004-06-12 10:17:17 C 21 59 03.80 -07 50 49.5 o 699
2004-06-14 17:54:23 C 22 04 38.19 -06 39 50.2 r 379
2004-06-14 17:57:32 C 22 04 38.49 -06 39 46.2 r 379
2004-06-14 18:03:49 C 22 04 39.15 -06 39 37.4 r 379
2004-06-14 18:12:52 C 22 04 40.01 -06 39 25.7 r 379
2004-06-15 09:04:07 C 22 06 11.27 -06 19 37.8 c 704
2004-06-15 09:19:03 C 22 06 12.75 -06 19 18.2 c 704
2004-06-15 09:33:59 C 22 06 14.22 -06 18 58.4 c 704
2004-06-15 09:49:01 C 22 06 15.72 -06 18 38.2 c 704
2004-06-15 10:03:50 C 22 06 17.19 -06 18 18.3 c 704
2004-06-18 07:48:12 C 22 13 35.57 -04 40 27.2 c 704
2004-06-18 08:01:50 C 22 13 36.97 -04 40 07.1 c 704
2004-06-18 08:17:58 C 22 13 38.63 -04 39 43.7 c 704
2004-06-18 08:33:49 C 22 13 40.29 -04 39 20.6 c 704
2004-06-18 08:47:24 C 22 13 41.69 -04 39 00.6 c 704
2004-06-19 01:47:07 C 22 15 31.61 -04 13 48.7 c 950
2004-06-19 01:48:55 C 22 15 31.79 -04 13 46.2 c 950
2004-06-19 03:36:20 C 22 15 43.09 -04 11 05.4 c 950
2004-06-19 03:38:06 C 22 15 43.27 -04 11 02.8 c 950
2004-06-19 05:02:35 C 22 15 52.10 -04 08 56.2 c 950
2004-06-19 05:04:45 C 22 15 52.32 -04 08 52.8 c 950
2004-06-20 02:21:23 C 22 18 12.33 -03 36 27.7 c 950
2004-06-20 02:23:02 C 22 18 12.51 -03 36 25.2 c 950
2004-06-20 03:47:05 C 22 18 21.46 -03 34 15.7 c 950
2004-06-20 03:48:44 C 22 18 21.64 -03 34 13.1 c 950
2004-06-20 08:14:13 C 22 18 50.91 -03 27 20.2 15.1 d H72
2004-06-20 08:17:41 C 22 18 51.23 -03 27 15.0 15.1 d H72
2004-06-20 08:21:08 C 22 18 51.63 -03 27 09.6 15.1 d H72
2004-06-20 08:24:35 C 22 18 52.05 -03 27 04.4 15.5 d H72
2004-06-21 07:56:23 C 22 21 29.54 -02 49 56.7 r H41
2004-06-21 07:58:20 C 22 21 29.76 -02 49 53.6 r H41
2004-06-21 07:59:44 C 22 21 29.90 -02 49 51.4 r H41
2004-06-21 08:01:20 C 22 21 30.08 -02 49 48.9 r H41
2004-06-21 08:02:47 C 22 21 30.24 -02 49 46.8 r H41
2004-06-21 08:06:56 C 22 21 30.69 -02 49 39.7 r H41
2004-06-22 17:44:13 C 22 25 20.19 -01 54 33.9 r 379
2004-06-22 17:50:49 C 22 25 20.95 -01 54 22.9 r 379
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)