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9509 Amfortas (3453 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2009509
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496868494864653 5.2079e-08  
a 2.31660519974818 1.5312e-08 AU
q 1.969839865893911 1.2328e-07 AU
i 6.690771544463272 7.1642e-06 deg
node 187.4319195103989 4.6338e-05 deg
peri 72.71269232076615 5.2906e-05 deg
M 296.5174126521598 2.5944e-05 deg
tp 2457227.605987999628
(2015-Jul-24.10598800)
9.3599e-05 JED
period 1287.883167582451
3.53
1.2769e-05
3.496e-08
d
yr
n .279528461169171 2.7715e-09 deg/d
Q 2.663370533602449 1.7604e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      13307 days (36.43 yr)  
   first obs. used      1977-10-07  
   last obs. used      2014-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58284  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:33:44  

Additional Information
 Earth MOID = .968968 AU 
 T_jup = 3.557 
[ 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 14.6 mag n/a MPO250304  

9509 Amfortas           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Amfortas was the king of Monsalvat and of the knights of the Holy Grail in Wagner's opera Parsifal.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 3453 T-3 = 1990 EQ4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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