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
2024-04-02 09:25:56 C 08 14 38.587 +02 10 11.82 V T05
2024-04-02 09:45:47 C 08 14 40.178 +02 10 14.09 V T05
2024-04-02 10:05:41 C 08 14 41.798 +02 10 16.50 V T05
2024-04-02 12:06:18 C 08 14 52.37 +02 10 41.3 v 323
2024-04-02 12:40:21 C 08 14 55.11 +02 10 45.0 v 323
2024-04-02 17:19:43 C 08 15 18.456 +02 11 18.74 X L68
2024-04-02 17:34:37 C 08 15 19.642 +02 11 20.33 X L68
2024-04-02 17:49:22 C 08 15 20.813 +02 11 21.95 X L68
2024-04-02 18:47:08 S 08 15 25.51 +02 11 22.2 L C51
2024-04-02 21:52:20 S 08 15 40.85 +02 11 43.2 L C51
2024-04-03 00:57:22 S 08 15 56.13 +02 12 05.0 L C51
2024-04-03 04:01:50 S 08 16 11.36 +02 12 26.4 L C51
2024-04-03 07:07:34 S 08 16 26.71 +02 12 47.0 L C51
2024-04-03 10:12:46 S 08 16 41.99 +02 13 07.6 L C51
2024-04-03 11:44:38 S 08 16 49.58 +02 13 18.7 L C51
2024-04-03 12:30:07 C 08 16 53.29 +02 13 29.9 u 323
2024-04-03 13:04:41 C 08 16 56.04 +02 13 33.7 u 323
2024-04-03 13:17:48 S 08 16 57.27 +02 13 28.3 L C51
2024-04-03 13:17:58 S 08 16 57.28 +02 13 28.1 L C51
2024-04-03 14:50:23 S 08 17 04.90 +02 13 38.7 L C51
2024-04-03 16:23:00 S 08 17 12.54 +02 13 48.7 L C51
2024-04-03 17:55:35 S 08 17 20.16 +02 13 58.9 L C51
2024-04-03 19:24:04 B 08 17 27.50 +02 14 01.6 q A77
2024-04-03 19:28:11 S 08 17 27.79 +02 14 09.0 L C51
2024-04-03 19:31:24 B 08 17 28.08 +02 14 02.3 q A77
2024-04-03 19:38:25 B 08 17 28.63 +02 14 03.2 q A77
2024-04-03 21:00:37 S 08 17 35.41 +02 14 19.4 L C51
2024-04-03 21:00:47 S 08 17 35.44 +02 14 19.0 L C51
2024-04-03 22:33:12 S 08 17 43.04 +02 14 29.3 L C51
2024-04-04 00:05:49 S 08 17 50.67 +02 14 39.3 L C51
2024-04-04 03:10:16 S 08 18 05.84 +02 14 59.4 L C51
2024-04-04 03:38:39 C 08 18 08.143 +02 14 56.54 V 703
2024-04-04 03:42:01 C 08 18 08.413 +02 14 57.16 V 703
2024-04-04 03:45:22 C 08 18 08.676 +02 14 57.26 V 703
2024-04-04 03:48:44 C 08 18 08.942 +02 14 57.59 V 703
2024-04-04 05:52:05 C 08 18 19.259 +02 15 12.96 X F51
2024-04-04 06:09:46 C 08 18 20.656 +02 15 14.72 X F51
2024-04-04 06:16:01 S 08 18 21.14 +02 15 18.9 L C51
2024-04-04 06:27:27 C 08 18 22.058 +02 15 16.61 X F51
2024-04-04 09:21:14 S 08 18 36.38 +02 15 37.9 L C51
2024-04-04 12:26:26 S 08 18 51.60 +02 15 57.1 L C51
2024-04-04 15:31:26 S 08 19 06.80 +02 16 16.3 L C51
2024-04-04 20:35:38 B 08 19 31.613 +02 16 39.36 V 160
2024-04-04 20:40:31 B 08 19 32.042 +02 16 40.40 V 160
2024-04-04 20:45:24 B 08 19 32.450 +02 16 41.56 V 160
2024-04-05 08:19:27 C 08 20 29.220 +02 17 53.48 V T05
2024-04-05 08:37:31 C 08 20 30.655 +02 17 55.14 V T05
2024-04-05 08:57:33 C 08 20 32.258 +02 17 57.16 V T05
2024-04-05 12:55:16 C 08 20 52.03 +02 18 29.8 u 323
2024-04-05 13:14:51 C 08 20 53.58 +02 18 31.6 u 323
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)