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
2023-10-18 00:36:30 B 17 40 14.08 -14 33 56.5 q W42
2023-10-18 00:48:08 B 17 40 15.36 -14 33 54.3 q W42
2023-10-26 23:59:26 C 18 04 58.745 -13 47 05.32 V W68
2023-10-27 00:00:05 C 18 04 58.831 -13 47 04.99 V W68
2023-10-27 00:04:01 C 18 04 59.287 -13 47 04.09 V W68
2023-10-27 00:04:40 C 18 04 59.352 -13 47 03.84 V W68
2023-10-27 00:11:51 C 18 05 00.180 -13 47 02.36 V W68
2023-10-27 00:13:50 C 18 05 00.425 -13 47 01.54 V W68
2023-10-27 00:29:35 C 18 05 02.268 -13 46 57.47 V W68
2023-10-27 00:32:16 C 18 05 02.570 -13 46 57.00 V W68
2023-12-08 01:23:42 C 20 14 06.911 -08 10 45.70 V G96
2023-12-08 01:29:47 C 20 14 07.735 -08 10 43.97 V G96
2023-12-08 01:35:51 C 20 14 08.560 -08 10 42.35 V G96
2023-12-08 01:41:57 C 20 14 09.388 -08 10 40.66 V G96
2023-12-12 04:43:14 C 20 28 13.987 -07 47 16.94 V T08
2023-12-12 04:53:26 C 20 28 15.437 -07 47 14.78 V T08
2023-12-12 05:09:22 C 20 28 17.693 -07 47 11.40 V T08
2023-12-13 01:33:42 C 20 31 17.501 -07 43 21.54 V 703
2023-12-13 01:36:40 C 20 31 17.940 -07 43 20.96 V 703
2023-12-13 01:39:36 C 20 31 18.347 -07 43 20.28 V 703
2023-12-13 01:42:33 C 20 31 18.775 -07 43 19.99 V 703
2023-12-14 04:52:38 C 20 35 21.338 -07 38 36.46 V T05
2023-12-14 05:00:45 C 20 35 22.510 -07 38 35.12 V T05
2023-12-14 05:05:59 C 20 35 23.278 -07 38 34.22 V T05
2023-12-14 05:21:19 C 20 35 25.534 -07 38 31.67 V T05
2023-12-15 01:39:01 C 20 38 30.080 -07 35 33.00 V 703
2023-12-15 01:42:21 C 20 38 30.599 -07 35 32.71 V 703
2023-12-15 01:45:41 C 20 38 31.052 -07 35 32.06 V 703
2023-12-15 01:49:02 C 20 38 31.538 -07 35 31.49 V 703
2023-12-17 01:26:58 C 20 45 55.631 -07 29 54.56 V 703
2023-12-17 01:30:42 C 20 45 56.207 -07 29 54.28 V 703
2023-12-17 01:34:27 C 20 45 56.783 -07 29 53.81 V 703
2023-12-17 01:38:11 C 20 45 57.366 -07 29 53.56 V 703
2023-12-29 01:32:04 C 21 40 25.144 -07 55 34.36 V 703
2023-12-29 01:35:26 C 21 40 25.914 -07 55 36.23 V 703
2023-12-29 01:38:47 C 21 40 26.713 -07 55 36.41 V 703
2023-12-29 01:42:09 C 21 40 27.458 -07 55 37.88 V 703
2024-01-01 05:18:01 C 21 59 35.770 -08 23 52.73 V T08
2024-01-01 05:22:40 C 21 59 37.015 -08 23 54.85 V T08
2024-01-01 05:31:31 C 21 59 39.384 -08 23 58.38 V T08
2024-01-01 05:49:36 C 21 59 44.244 -08 24 06.16 V T08
2024-01-03 01:33:13 C 22 12 20.693 -08 45 31.43 V 703
2024-01-03 01:36:33 C 22 12 21.697 -08 45 33.34 V 703
2024-01-03 01:39:52 C 22 12 22.666 -08 45 34.74 V 703
2024-01-03 01:43:11 C 22 12 23.641 -08 45 36.68 V 703
2024-01-05 05:26:47 C 22 29 03.214 -09 15 12.49 V T08
2024-01-05 05:30:52 C 22 29 04.570 -09 15 14.98 V T08
2024-01-05 05:38:25 C 22 29 07.121 -09 15 19.48 V T08
2024-01-05 05:55:18 C 22 29 12.804 -09 15 29.70 V T08
2024-01-10 02:09:14 C 23 15 34.038 -10 37 50.88 V 703
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)