1685 Toro (1948 OA) |
Classification: Apollo [NEO] SPK-ID: 2001685 |
[ hide orbit diagram ]
For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
[ revert to old Java-based viewer ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 424 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .4360613823094916 | 5.9208e-09 | |
a | 1.367431915074258 | 8.2213e-10 | au |
q | .7711476639728616 | 8.0706e-09 | au |
i | 9.38341668856663 | 3.421e-06 | deg |
node | 274.2458433388088 | 1.7258e-05 | deg |
peri | 127.2205979281958 | 1.7406e-05 | deg |
M | 43.69210505570832 | 2.0561e-06 | deg |
tp | 2458529.614490848780 (2019-Feb-15.11449085) | 3.3268e-06 | TDB |
period | 584.0593686640264 1.60 | 5.2672e-07 1.442e-09 | d yr |
n | .6163756962300968 | 5.5587e-10 | deg/d |
Q | 1.963716166175654 | 1.1806e-09 | au |
|
Additional Model Parameters
Parameter | Value | Uncertainty (1-sigma) |
A2 [EST] | -3.132494550770926E-15 | 7.09E-16 |
ALN [SET] | 1. | n/a |
NK [SET] | 0. | n/a |
NM [SET] | 2. | n/a |
R0 [SET] | 1. | n/a |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
14.23 |
|
n/a |
PDS3 (MPC 17263) |
|
diameter |
diameter |
3.4 |
km |
n/a |
Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 |
|
rotation period |
rot_per |
10.1995 |
h |
n/a |
LCDB (Rev. 2019-January); Warner et al., 2009 |
Published Reference List: [Dunlap, J.L.; Gehrels, T.; Howes, M.L. (1973) Astron. J. 78, 491-501.] [De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.] [Torppa, J.; Aksnes, K.; Dai, Z.; Grav, T.; et al. (2005) Bull. Amer. Astron. Soc. 37, 643.] [Higgins, D. (2008) Minor Planet Bull. 35, 30-32.] [Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.W.; Allen, B.; Warner, B.D. (2008) Minor Planet Bull. 35, 123-126.] [Higgins, D. (2011) Minor Planet Bull. 38, 41-46.] [Oey, J. (2011) Minor Planet Bull. 38, 221-223.] [Warner, B.D. (2013). Minor Planet Bull. 40, 26-29.] [Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.] [Oey, J.; Williams, H.; Groom, R. (2017) Minor Planet Bull. 44, 200-204.] [Durech, J.; Vokrouhlicky, D.; Pravec, P.; Hanus, J.; et al. (2018) Astron. Astrophys. 609, A86.] |
geometric albedo |
albedo |
0.31 |
|
n/a |
Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 |
|
B-V |
BV |
0.880 |
|
0.027 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=39.08, mean=63.48, max.=99.00) deg. |
U-B |
UB |
0.470 |
|
0.022 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=41.43, mean=59.67, max.=75.99) deg. |
Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
SMASSII spectral type |
spec_B |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
1685 Toro (1948 OA) Discovered 1948-Jul-17 by Wirtanen, C. A. at Mount Hamilton |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
|