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
2015-07-23 02:38:33 C 15 27 32.25 -19 49 00.9 u H21
2015-07-23 02:41:12 C 15 27 32.23 -19 48 59.9 u H21
2015-07-23 02:43:54 C 15 27 32.20 -19 48 58.7 u H21
2015-07-23 02:46:36 C 15 27 32.18 -19 48 57.7 u H21
2015-07-23 02:49:23 C 15 27 32.16 -19 48 56.7 u H21
2015-07-24 02:17:54 C 15 27 25.99 -19 39 54.6 u H21
2015-07-24 02:20:38 C 15 27 25.98 -19 39 53.5 u H21
2015-07-24 02:23:22 C 15 27 25.96 -19 39 52.6 u H21
2015-07-24 02:26:06 C 15 27 25.95 -19 39 51.6 u H21
2015-07-24 02:28:49 C 15 27 25.93 -19 39 50.4 u H21
2015-07-24 02:31:28 C 15 27 25.93 -19 39 49.3 u H21
2015-07-24 02:34:05 C 15 27 25.90 -19 39 48.5 u H21
2015-07-24 02:36:42 C 15 27 25.88 -19 39 47.4 u H21
2015-07-24 02:39:22 C 15 27 25.88 -19 39 46.4 u H21
2015-07-24 02:42:01 C 15 27 25.85 -19 39 45.3 u H21
2015-07-24 02:44:57 C 15 27 25.84 -19 39 44.1 u H21
2015-08-01 23:55:27 C 15 28 48.70 -18 29 34.1 q Y00
2015-08-02 00:09:36 C 15 28 48.91 -18 29 29.7 q Y00
2015-08-02 00:23:24 C 15 28 49.09 -18 29 25.0 q Y00
2015-08-09 07:15:12 S 15 32 47.62 -17 46 47.1 L C51
2015-08-09 10:24:04 S 15 32 53.20 -17 46 07.5 L C51
2015-08-09 13:32:57 S 15 32 58.80 -17 45 28.0 L C51
2015-08-09 13:33:08 S 15 32 58.82 -17 45 28.2 L C51
2015-08-09 16:42:00 S 15 33 04.46 -17 44 49.0 L C51
2015-08-09 19:50:52 S 15 33 10.181 -17 44 10.00 L C51
2015-08-09 21:25:18 S 15 33 13.044 -17 43 50.56 L C51
2015-08-09 22:59:55 S 15 33 15.926 -17 43 31.01 L C51
2015-08-10 00:34:21 S 15 33 18.81 -17 43 12.1 L C51
2015-08-10 02:08:47 S 15 33 21.72 -17 42 52.6 L C51
2015-08-10 03:43:13 S 15 33 24.63 -17 42 33.8 L C51
2015-08-10 06:52:16 S 15 33 30.50 -17 41 55.5 L C51
2015-08-10 10:01:08 S 15 33 36.38 -17 41 17.5 L C51
2015-08-10 13:10:00 S 15 33 42.34 -17 40 39.6 L C51
2015-08-11 00:57:16 C 15 34 04.56 -17 38 19.1 r Y00
2015-08-11 01:12:06 C 15 34 05.02 -17 38 16.1 r Y00
2015-08-11 01:30:50 C 15 34 05.62 -17 38 11.8 r Y00
2015-08-13 03:02:37 C 15 35 47.66 -17 29 06.7 R G45
2015-08-13 03:11:05 C 15 35 47.95 -17 29 05.3 R G45
2015-08-13 03:19:08 C 15 35 48.22 -17 29 03.7 R G45
2015-08-13 03:27:18 C 15 35 48.51 -17 29 02.3 R G45
2015-08-13 03:34:31 C 15 35 48.74 -17 29 01.0 R G45
2015-08-13 03:43:41 C 15 35 49.07 -17 28 59.3 R G45
2015-08-13 03:51:07 C 15 35 49.31 -17 28 57.5 R G45
2015-08-14 01:51:40 C 15 36 38.03 -17 25 08.3 u H21
2015-08-14 01:53:44 C 15 36 38.10 -17 25 07.7 u H21
2015-08-14 01:55:48 C 15 36 38.17 -17 25 07.5 u H21
2015-08-14 01:57:52 C 15 36 38.25 -17 25 07.3 u H21
2015-08-14 01:59:56 C 15 36 38.33 -17 25 06.7 u H21
2015-08-14 02:02:00 C 15 36 38.40 -17 25 06.8 u H21
2015-08-14 02:04:04 C 15 36 38.47 -17 25 06.5 u H21
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)