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
2020-09-27 12:27:57 C 09 17 35.22 +22 26 25.7 U I41
2020-09-27 12:34:45 C 09 17 36.19 +22 26 16.4 U I41
2020-09-27 12:41:34 C 09 17 37.18 +22 26 06.9 U I41
2020-10-01 12:16:17 C 09 31 14.61 +20 14 05.5 U I41
2020-10-01 12:23:04 C 09 31 15.55 +20 13 56.2 U I41
2020-10-01 12:29:51 C 09 31 16.49 +20 13 47.0 U I41
2020-10-01 12:36:38 C 09 31 17.43 +20 13 37.8 U I41
2020-10-01 12:43:26 C 09 31 18.37 +20 13 28.5 U I41
2020-10-03 14:42:52 C 09 38 13.35 +19 05 10.9 V T08
2020-10-03 14:48:50 C 09 38 14.15 +19 05 02.8 V T08
2020-10-03 15:03:15 C 09 38 16.11 +19 04 43.4 V T08
2020-10-03 15:21:42 C 09 38 18.59 +19 04 18.4 V T08
2020-10-05 11:57:05 C 09 44 21.85 +18 03 46.7 V 703
2020-10-05 12:04:35 C 09 44 22.88 +18 03 36.9 V 703
2020-10-05 12:12:05 C 09 44 23.87 +18 03 27.0 V 703
2020-10-05 12:19:35 C 09 44 24.86 +18 03 16.8 V 703
2020-10-05 14:46:25 C 09 44 44.73 +18 00 00.0 V T05
2020-10-05 14:54:20 C 09 44 45.82 +17 59 49.4 V T05
2020-10-05 15:20:14 C 09 44 49.23 +17 59 15.0 V T05
2020-10-05 15:29:38 C 09 44 50.50 +17 59 02.0 V T05
2020-10-08 11:32:46 C 09 53 52.81 +16 27 40.6 V 703
2020-10-08 11:40:20 C 09 53 53.80 +16 27 30.9 V 703
2020-10-08 11:47:55 C 09 53 54.79 +16 27 20.8 V 703
2020-10-08 11:55:29 C 09 53 55.76 +16 27 10.4 V 703
2020-10-09 12:22:15 C 09 57 07.34 +15 54 38.6 U I41
2020-10-09 12:29:00 C 09 57 08.20 +15 54 29.6 U I41
2020-10-09 12:35:47 C 09 57 09.06 +15 54 20.8 U I41
2020-10-09 12:42:31 C 09 57 09.93 +15 54 11.8 U I41
2020-10-09 12:49:15 C 09 57 10.80 +15 54 03.0 U I41
2020-10-11 11:39:51 C 10 03 13.23 +14 52 11.6 V 703
2020-10-11 11:46:59 C 10 03 14.12 +14 52 02.3 V 703
2020-10-11 11:54:07 C 10 03 15.03 +14 51 53.1 V 703
2020-10-11 12:01:16 C 10 03 15.94 +14 51 43.8 V 703
2020-10-14 12:09:39 C 10 12 22.40 +13 17 42.4 V 703
2020-10-14 12:14:50 C 10 12 23.17 +13 17 35.9 V 703
2020-10-14 12:20:02 C 10 12 23.78 +13 17 28.7 V 703
2020-10-14 12:25:13 C 10 12 24.42 +13 17 22.3 V 703
2020-10-19 12:30:14 C 10 27 04.61 +10 44 20.8 U I41
2020-10-19 12:37:02 C 10 27 05.42 +10 44 12.3 U I41
2020-10-19 12:43:50 C 10 27 06.22 +10 44 03.6 U I41
2020-10-19 12:50:38 C 10 27 07.03 +10 43 55.2 U I41
2020-10-19 12:57:27 C 10 27 07.84 +10 43 46.8 U I41
2020-10-20 12:09:35 C 10 29 53.75 +10 14 45.5 V 703
2020-10-20 12:14:54 C 10 29 54.40 +10 14 38.8 V 703
2020-10-20 12:20:13 C 10 29 55.00 +10 14 32.3 V 703
2020-10-20 12:25:33 C 10 29 55.62 +10 14 25.5 V 703
2020-10-26 14:37:45 C 10 46 51.85 +07 15 42.7 V T08
2020-10-26 14:45:46 C 10 46 52.73 +07 15 33.4 V T08
2020-10-26 15:13:03 C 10 46 55.79 +07 15 00.9 V T08
2020-10-26 15:26:59 C 10 46 57.34 +07 14 44.2 V T08
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)