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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1498215149903413 5.106e-08  
a 2.316778510494359 1.175e-08 au
q 1.969675244155028 1.2211e-07 au
i 6.69108183760393 5.9881e-06 deg
node 187.4283483102073 4.0681e-05 deg
peri 72.75936571542302 4.6931e-05 deg
M 48.29204951413229 1.9914e-05 deg
tp 2457227.718063312257
(2015-Jul-24.21806331)
7.1351e-05 JED
period 1288.027694690917
3.53
9.7991e-06
2.683e-08
d
yr
n .2794970958185708 2.1264e-09 deg/d
Q 2.66388177683369 1.3511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      13768 days (37.69 yr)  
   first obs. used      1977-10-07  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55591  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:02:23  

Additional Information
 Earth MOID = .966056 au 
 Jupiter MOID = 2.401 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 14.8 mag n/a MPO340767  

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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