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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497211868332595 5.3619e-08  
a 2.31760478191152 1.4483e-08 AU
q 1.97061024335329 1.2552e-07 AU
i 6.688118403818667 7.6032e-06 deg
node 187.4528723739409 4.8963e-05 deg
peri 72.51792071447494 5.5857e-05 deg
M 240.8197393817946 2.699e-05 deg
tp 2457227.137793226068
(2015-Jul-23.63779323)
9.7776e-05 JED
period 1288.716812370545
3.53
1.208e-05
3.307e-08
d
yr
n .2793476398727149 2.6185e-09 deg/d
Q 2.664599320469751 1.6651e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      842  
   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      .63011  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:56:47  

Additional Information
 Earth MOID = .968028 AU 
 T_jup = 3.556 
[ 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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