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
2020-08-19 14:52:42 C 05 59 27.84 +42 46 24.3 V T05
2020-08-19 15:06:17 C 05 59 32.39 +42 46 14.2 V T05
2020-08-25 14:33:45 C 06 44 02.90 +40 24 10.0 V T08
2020-08-25 15:01:33 C 06 44 10.63 +40 23 39.6 V T08
2020-08-25 15:07:31 C 06 44 12.31 +40 23 33.0 V T08
2020-08-25 15:14:15 C 06 44 14.17 +40 23 25.6 V T08
2020-08-25 23:44:28 C 06 46 37.20 +40 13 27.7 o L52
2020-08-26 02:07:50 C 06 47 17.02 +40 10 47.4 o L52
2020-09-01 14:13:05 C 07 26 44.93 +36 55 19.8 V T08
2020-09-01 14:21:02 C 07 26 46.74 +36 55 09.4 V T08
2020-09-01 14:27:01 C 07 26 48.09 +36 55 01.8 V T08
2020-09-01 14:56:50 C 07 26 54.88 +36 54 23.4 V T08
2020-09-02 14:39:00 C 07 32 17.65 +36 22 46.6 V T08
2020-09-02 14:45:05 C 07 32 19.02 +36 22 38.6 V T08
2020-09-02 15:03:58 C 07 32 23.19 +36 22 14.0 V T08
2020-09-02 15:15:34 C 07 32 25.73 +36 21 58.8 V T08
2020-09-03 11:57:13 C 07 37 00.65 +35 54 01.2 U I41
2020-09-03 12:04:00 C 07 37 02.13 +35 53 52.4 U I41
2020-09-03 12:10:48 C 07 37 03.60 +35 53 43.4 U I41
2020-09-03 12:17:35 C 07 37 05.08 +35 53 34.4 U I41
2020-09-03 12:24:23 C 07 37 06.55 +35 53 25.4 U I41
2020-09-05 11:58:14 C 07 47 15.94 +34 48 31.8 U I41
2020-09-05 12:04:58 C 07 47 17.33 +34 48 22.8 U I41
2020-09-05 12:11:44 C 07 47 18.72 +34 48 13.7 U I41
2020-09-05 12:18:27 C 07 47 20.11 +34 48 04.7 U I41
2020-09-05 12:25:12 C 07 47 21.48 +34 47 55.9 U I41
2020-09-09 14:46:37 C 08 06 55.46 +32 31 17.5 V T08
2020-09-09 14:55:18 C 08 06 57.09 +32 31 05.6 V T08
2020-09-09 15:01:20 C 08 06 58.22 +32 30 57.2 V T08
2020-09-09 15:15:32 C 08 07 00.90 +32 30 37.8 V T08
2020-09-15 12:08:47 C 08 32 21.57 +29 11 52.8 U I41
2020-09-15 12:15:33 C 08 32 22.72 +29 11 43.3 U I41
2020-09-15 12:22:22 C 08 32 23.87 +29 11 33.9 U I41
2020-09-15 12:29:12 C 08 32 25.03 +29 11 24.4 U I41
2020-09-15 12:36:00 C 08 32 26.17 +29 11 14.9 U I41
2020-09-21 12:08:13 C 08 55 50.76 +25 48 27.9 U I41
2020-09-21 12:15:01 C 08 55 51.81 +25 48 18.5 U I41
2020-09-21 12:21:48 C 08 55 52.86 +25 48 09.0 U I41
2020-09-21 12:28:36 C 08 55 53.91 +25 47 59.6 U I41
2020-09-21 12:35:24 C 08 55 54.97 +25 47 50.1 U I41
2020-09-23 12:15:07 C 09 03 16.11 +24 40 49.3 U I41
2020-09-23 12:21:55 C 09 03 17.14 +24 40 39.9 U I41
2020-09-23 12:28:45 C 09 03 18.17 +24 40 30.4 U I41
2020-09-23 12:35:34 C 09 03 19.20 +24 40 21.0 U I41
2020-09-23 12:42:22 C 09 03 20.23 +24 40 11.5 U I41
2020-09-27 11:11:30 C 09 17 24.10 +22 28 11.6 V G96
2020-09-27 11:18:27 C 09 17 25.12 +22 28 02.0 V G96
2020-09-27 11:25:23 C 09 17 26.11 +22 27 52.5 V G96
2020-09-27 11:32:21 C 09 17 27.11 +22 27 42.9 V G96
2020-09-27 12:21:10 C 09 17 34.24 +22 26 34.9 U I41
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)