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
2023-08-19 01:55:00 C 15 43 28.411 -16 57 13.18 V W68
2023-08-19 02:09:07 C 15 43 29.009 -16 57 11.09 V W68
2023-08-19 17:21:26 C 15 44 10.152 -16 55 00.91 V M22
2023-08-19 17:27:19 C 15 44 10.399 -16 55 00.08 V M22
2023-08-19 17:35:54 C 15 44 10.759 -16 54 58.86 V M22
2023-08-19 17:50:36 C 15 44 11.395 -16 54 56.56 V M22
2023-08-28 01:23:19 C 15 54 26.275 -16 31 21.50 V W68
2023-08-28 01:27:54 C 15 54 26.525 -16 31 20.96 V W68
2023-08-28 01:49:13 C 15 54 27.727 -16 31 18.80 V W68
2023-08-28 01:57:10 C 15 54 28.152 -16 31 17.87 V W68
2023-08-28 17:58:44 C 15 55 23.873 -16 29 44.99 V M22
2023-08-28 18:03:20 C 15 55 24.132 -16 29 44.48 V M22
2023-08-28 18:11:50 C 15 55 24.607 -16 29 43.66 V M22
2023-08-28 18:40:08 C 15 55 26.198 -16 29 40.92 V M22
2023-08-29 19:50:25 C 15 56 55.042 -16 27 18.90 V M22
2023-08-29 19:55:04 C 15 56 55.318 -16 27 18.29 V M22
2023-08-29 20:03:05 C 15 56 55.802 -16 27 17.75 V M22
2023-08-29 20:17:27 C 15 56 56.628 -16 27 16.34 V M22
2023-09-01 19:48:48 C 16 01 20.856 -16 21 04.00 V M22
2023-09-01 19:53:34 C 16 01 21.158 -16 21 03.74 V M22
2023-09-01 20:02:17 C 16 01 21.694 -16 21 03.10 V M22
2023-09-01 20:16:34 C 16 01 22.582 -16 21 01.87 V M22
2023-09-12 17:31:25 C 16 19 43.392 -16 02 29.44 V M22
2023-09-12 17:36:01 C 16 19 43.733 -16 02 29.15 V M22
2023-09-12 18:08:53 C 16 19 46.183 -16 02 26.92 V M22
2023-09-12 18:34:43 C 16 19 48.139 -16 02 25.01 V M22
2023-09-13 23:38:00 C 16 22 03.305 -16 00 33.52 V W68
2023-09-13 23:42:36 C 16 22 03.655 -16 00 33.34 V W68
2023-09-13 23:50:26 C 16 22 04.253 -16 00 32.69 V W68
2023-09-14 00:05:30 C 16 22 05.398 -16 00 31.72 V W68
2023-09-16 23:31:22 C 16 27 47.861 -15 55 55.45 V W68
2023-09-16 23:35:56 C 16 27 48.214 -15 55 54.95 V W68
2023-09-17 00:18:07 C 16 27 51.581 -15 55 51.96 V W68
2023-09-19 23:33:41 C 16 33 47.570 -15 51 07.74 V W68
2023-09-19 23:38:14 C 16 33 47.950 -15 51 07.31 V W68
2023-09-19 23:47:24 C 16 33 48.703 -15 51 06.66 V W68
2023-09-20 00:11:49 C 16 33 50.741 -15 51 04.93 V W68
2023-09-27 17:54:47 C 16 50 21.936 -15 36 57.74 V M22
2023-09-27 17:59:19 C 16 50 22.354 -15 36 57.35 V M22
2023-09-27 18:10:30 C 16 50 23.366 -15 36 56.38 V M22
2023-09-27 18:41:20 C 16 50 26.172 -15 36 53.60 V M22
2023-09-28 19:22:16 C 16 52 44.503 -15 34 43.28 V M22
2023-09-28 19:28:21 C 16 52 45.060 -15 34 42.78 V M22
2023-09-28 19:35:10 C 16 52 45.694 -15 34 42.17 V M22
2023-09-28 19:49:26 C 16 52 47.040 -15 34 40.91 V M22
2023-10-01 18:01:24 C 16 59 28.901 -15 28 03.90 V M22
2023-10-01 18:05:27 C 16 59 29.275 -15 28 03.47 V M22
2023-10-01 18:13:41 C 16 59 30.067 -15 28 02.50 V M22
2023-10-01 18:44:02 C 16 59 32.954 -15 27 59.26 V M22
2023-10-18 00:24:47 B 17 40 12.80 -14 33 58.8 q W42
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)