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18335 San Cassiano (1987 SC1)
Classification: Main-belt Asteroid          SPK-ID: 2018335
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2534997905884716 8.5155e-08  
a 2.588394529861723 2.0143e-08 au
q 1.932237058581431 2.2825e-07 au
i 5.360523508410243 6.4575e-06 deg
node 139.314123509088 8.3071e-05 deg
peri 262.7354276243124 8.4035e-05 deg
M 310.1579456431868 1.5486e-05 deg
tp 2457811.089915631713
6.7007e-05 JED
period 1521.052264111853
n .2366782578705177 2.7628e-09 deg/d
Q 3.244552001142015 2.525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      10158 days (27.81 yr)  
   first obs. used      1987-08-31  
   last obs. used      2015-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55251  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:19:32  

Additional Information
 Earth MOID = .947928 au 
 Jupiter MOID = 2.19392 au 
 T_jup = 3.369 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO302177  
rotation period rot_per 3.7489 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

18335 San Cassiano           Discovered 1987 Sept. 19 by E. Bowell at Lowell Observatory's Anderson Mesa Station.
A small village in the hills near Verona, San Cassiano is renowned for its high-quality oil (Grignano) and wine (Amarone). Its isolated location affords views of both the Alps and the Adriatic Sea. The name was suggested by V. Zappalà and A. W. Harris.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100130/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1987 SC1 = 1991 PX12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-05 19:58 UT
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