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12225 Yanfernandez (1985 PQ)
Classification: Main-belt Asteroid          SPK-ID: 2012225
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .194442971920834 3.3473e-08  
a 2.212702435724835 8.6645e-09 au
q 1.78245799814603 7.527e-08 au
i 4.767722615962912 4.1406e-06 deg
node 153.6916503731389 5.0565e-05 deg
peri 116.3184742372674 5.206e-05 deg
M 185.5169683869362 1.4398e-05 deg
tp 2458183.184741295285
4.9442e-05 JED
period 1202.217229532576
n .2994467149168777 1.7589e-09 deg/d
Q 2.64294687330364 1.0349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1396  
   data-arc span      13818 days (37.83 yr)  
   first obs. used      1978-05-06  
   last obs. used      2016-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52959  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:12:53  

Additional Information
 Earth MOID = .77251 au 
 Jupiter MOID = 2.46155 au 
 T_jup = 3.626 
[ 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 14.2 mag n/a MPO347621  

12225 Yanfernández           Discovered 1985 Aug. 14 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Yanga R. Fernández (b. 1971) completed his thesis on the albedo and size distribution of cometary nuclei at the University of Maryland in 1999. Since then, at the University of Hawaii, he has measured albedos of other small bodies, recovered comets and discovered new jovian satellites. The name was suggested by M. F. A'Hearn.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011130/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1985 PQ = 1978 JM1 = 1991 ED1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-30 22:32 UT
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