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
2021-04-04 10:44:04 S 12 15 24.307 -23 51 22.64 V C57
2021-04-04 10:44:04 s 1 +165258.30 8 +197391.21 910.0 C57
2021-04-04 10:54:04 S 12 15 23.628 -23 51 16.70 V C57
2021-04-04 10:54:04 s 1 +165118.76 7 +198081.82 8170.0 C57
2021-04-04 11:04:04 S 12 15 22.942 -23 51 09.68 V C57
2021-04-04 11:04:04 s 1 +164977.87 9 +198770.81 2710.0 C57
2021-04-04 11:14:04 S 12 15 22.267 -23 51 03.82 V C57
2021-04-04 11:14:04 s 1 +164835.65 2 +199458.20 4540.0 C57
2021-04-04 11:24:04 S 12 15 21.612 -23 50 57.34 V C57
2021-04-04 11:24:04 s 1 +164692.09 3 +200143.98 3680.0 C57
2021-04-04 11:34:04 S 12 15 20.875 -23 50 49.88 V C57
2021-04-04 11:34:04 s 1 +164547.21 1 +200828.15 140.0 C57
2021-04-04 11:44:04 S 12 15 20.273 -23 50 43.73 V C57
2021-04-04 11:44:04 s 1 +164401.01 3 +201510.71 3940.0 C57
2021-04-04 11:54:04 S 12 15 19.512 -23 50 38.11 V C57
2021-04-04 11:54:04 s 1 +164253.50 7 +202191.67 5100.0 C57
2021-04-04 12:04:04 S 12 15 18.931 -23 50 32.06 V C57
2021-04-04 12:04:04 s 1 +164104.70 0 +202871.04 3620.0 C57
2021-04-04 12:14:04 S 12 15 18.154 -23 50 23.96 V C57
2021-04-04 12:14:04 s 1 +163954.60 0 +203548.80 9530.0 C57
2021-04-04 12:24:04 S 12 15 17.587 -23 50 18.89 V C57
2021-04-04 12:24:04 s 1 +163803.21 4 +204224.98 2830.0 C57
2021-04-04 12:34:04 S 12 15 16.824 -23 50 11.80 V C57
2021-04-04 12:34:04 s 1 +163650.54 9 +204899.56 3550.0 C57
2021-04-04 12:44:04 S 12 15 16.205 -23 50 05.42 V C57
2021-04-04 12:44:04 s 1 +163496.61 4 +205572.55 1690.0 C57
2021-04-04 12:54:04 S 12 15 15.504 -23 49 58.73 V C57
2021-04-04 12:54:04 s 1 +163341.41 5 +206243.95 7280.0 C57
2021-04-04 13:04:04 S 12 15 14.887 -23 49 52.10 V C57
2021-04-04 13:04:04 s 1 +163184.95 9 +206913.77 320.0 C57
2021-04-04 13:14:04 S 12 15 14.136 -23 49 45.80 V C57
2021-04-04 13:14:04 s 1 +163027.25 4 +207582.00 830.0 C57
2021-04-04 13:24:04 S 12 15 13.447 -23 49 39.65 V C57
2021-04-04 13:24:04 s 1 +162868.30 7 +208248.66 8820.0 C57
2021-04-04 13:34:04 S 12 15 12.809 -23 49 32.77 V C57
2021-04-04 13:34:04 s 1 +162708.12 4 +208913.73 4310.0 C57
2021-04-04 13:44:04 S 12 15 12.115 -23 49 26.04 V C57
2021-04-04 13:44:04 s 1 +162546.71 4 +209577.24 7320.0 C57
2021-04-04 13:54:04 S 12 15 11.518 -23 49 20.42 V C57
2021-04-04 13:54:04 s 1 +162384.08 2 +210239.17 7840.0 C57
2021-04-04 14:04:04 S 12 15 10.738 -23 49 12.79 V C57
2021-04-04 14:04:04 s 1 +162220.23 6 +210899.52 5910.0 C57
2021-04-04 14:14:04 S 12 15 10.020 -23 49 06.46 V C57
2021-04-04 14:14:04 s 1 +162055.18 3 +211558.31 1530.0 C57
2021-04-04 14:24:04 S 12 15 09.439 -23 49 01.74 V C57
2021-04-04 14:24:04 s 1 +161888.92 9 +212215.54 4710.0 C57
2021-04-04 14:34:04 S 12 15 08.695 -23 48 54.32 V C57
2021-04-04 14:34:04 s 1 +161721.48 2 +212871.20 5470.0 C57
2021-04-04 14:44:04 S 12 15 08.064 -23 48 49.43 V C57
2021-04-04 14:44:04 s 1 +161552.84 8 +213525.30 3830.0 C57
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)