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8661 Ratzinger (1990 TA13)
Classification: Main-belt Asteroid          SPK-ID: 2008661
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03499577328235635 6.2525e-08  
a 3.005912883673213 2.9255e-08 au
q 2.900718637889671 1.8741e-07 au
i 10.58088428823664 6.7962e-06 deg
node 38.2189181547733 3.715e-05 deg
peri 86.21323525629577 0.00011839 deg
M 276.9642009908708 0.0001138 deg
tp 2458039.562028861747
0.00060407 JED
period 1903.544402250543
n .1891208839543618 2.7609e-09 deg/d
Q 3.111107129456755 3.0279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1131  
   data-arc span      16858 days (46.15 yr)  
   first obs. used      1969-10-16  
   last obs. used      2015-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50909  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:08:00  

Additional Information
 Earth MOID = 1.93993 au 
 Jupiter MOID = 1.92703 au 
 T_jup = 3.224 
[ 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 12.3 mag n/a MPO358715  

8661 Ratzinger           Discovered 1990 Oct. 14 by L. D. Schmadel and F. Borngen at Tautenburg.
Joseph Cardinal Ratzinger (b. 1927), German professor of theology, is one of the most authoritative voices in the Vatican. Under his supervision, the Vatican opened its archives in 1998 to enable researchers to investigate judicial errors against Galileo and other medieval scientists. The name was proposed by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1990 TA13 = 1969 US = 1974 TM1 = 1992 CB1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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