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
1964-10-08 11:18:42 A 10 13 37.23 +22 38 22.6 689
1964-10-08 11:52:41 A 10 13 39.69 +22 37 26.2 689
1964-12-11 12:13:59 A 12 20 08.57 -09 29 27.2 689
1964-12-11 12:38:00 A 12 20 10.21 -09 29 48.8 689
1965-01-31 12:30:22 A 13 04 13.11 -24 01 05.9 689
1965-01-31 13:02:21 A 13 04 12.70 -24 01 20.7 689
1965-02-25 09:43:31 A 12 39 49.37 -26 33 44.6 689
1965-02-25 09:55:30 A 12 39 48.56 -26 33 44.2 689
1965-03-24 22:58:03 A 11 44 05.03 -22 21 32.2 074
1965-04-01 07:00:21 A 11 31 12.15 -20 15 34.1 689
1965-04-01 07:12:50 A 11 31 11.25 -20 15 24.6 689
1965-04-27 00:30:52 A 11 08 34.68 -13 19 45.8 808
1967-05-13 08:12:03 A 16 37 18.12 -32 54 29.4 693
1967-05-13 08:43:03 A 16 37 15.72 -32 54 23.9 693
1967-06-07 06:08:02 A 15 44 33.07 -29 03 49.4 693
1967-06-07 06:32:03 A 15 44 30.87 -29 03 35.6 693
1967-06-08 05:12:02 A 15 42 33.31 -28 50 44.0 693
1968-04-28 05:54:05 A 08 28 20.26 +06 43 40.3 693
1970-04-15 06:19:22 A 14 20 46.97 -31 15 14.9 808
1970-05-04 06:55:12 A 13 44 44.99 -27 37 20.3 693
1970-05-04 07:30:12 A 13 44 42.37 -27 36 59.3 693
1970-05-12 03:19:22 A 13 32 06.86 -25 39 43.9 808
1970-05-14 04:21:19 A 13 29 14.61 -25 08 36.8 808
1970-05-25 00:50:32 A 13 17 20.34 -22 29 14.4 808
1970-05-27 00:02:46 A 13 15 47.87 -22 02 23.7 808
1972-05-11 08:30:08 A 20 22 28.95 -21 48 43.0 805
1972-05-11 08:45:09 A 20 22 29.93 -21 48 36.9 805
1972-05-11 09:02:38 A 20 22 31.08 -21 48 29.3 805
1972-06-08 08:51:30 A 21 02 30.25 -15 21 05.5 693
1972-06-08 09:08:00 A 21 02 31.06 -15 20 52.5 693
1972-06-16 05:33:29 A 21 11 57.34 -12 37 07.3 822
1972-06-16 05:53:28 A 21 11 58.25 -12 36 48.3 822
1972-06-19 07:14:11 A 21 15 24.85 -11 22 19.0 822
1972-06-19 07:32:20 A 21 15 25.58 -11 21 59.7 822
1972-07-07 23:06:47 A 21 34 19.80 +00 01 35.1 020
1972-07-08 00:53:59 A 21 34 23.34 +00 05 27.4 020
1972-07-10 07:52:29 A 21 36 32.96 +02 13 16.2 693
1972-07-10 08:04:30 A 21 36 33.34 +02 13 45.7 693
1972-07-13 01:55:37 A 21 39 08.24 +05 06 35.0 020
1972-07-13 02:23:02 A 21 39 09.15 +05 07 48.3 020
1972-07-14 07:43:14 A 21 40 20.84 +06 33 05.6 695
1972-07-14 07:48:19 A 21 40 20.98 +06 33 20.7 695
1972-07-16 22:35:15 A 21 42 56.78 +09 54 31.2 046
1972-07-18 01:01:37 A 21 44 03.27 +11 28 12.9 020
1972-07-18 01:25:33 A 21 44 04.08 +11 29 40.1 020
1972-07-20 00:29:15 A 21 46 10.85 +14 30 47.1 020
1972-07-20 00:44:12 A 21 46 11.67 +14 31 48.9 020
1972-07-20 00:54:11 A 21 46 11.91 +14 32 27.9 020
1972-08-06 21:31:47 A 22 31 13.06 +60 32 43.3 046
1972-08-06 21:37:48 A 22 31 14.70 +60 33 33.6 046
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)