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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1503085300859804 2.8314e-08  
a 2.316673312617823 6.8361e-09 au
q 1.968457552308819 6.521e-08 au
i 6.69004459444618 3.9208e-06 deg
node 187.4110754657124 2.7659e-05 deg
peri 72.60590274208718 3.1086e-05 deg
M 23.86508415064561 1.3169e-05 deg
tp 2458515.120011926379
(2019-Jan-31.62001193)
4.7068e-05 TDB
period 1287.939967547618
3.53
5.7007e-06
1.561e-08
d
yr
n .2795161335706355 1.2372e-09 deg/d
Q 2.664889072926827 7.8636e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1564  
   data-arc span      15364 days (42.06 yr)  
   first obs. used      1977-10-07  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54691  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:17:40  

Additional Information
 Earth MOID = .965754 au 
 Jupiter MOID = 2.40421 au 
 T_jup = 3.556 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO435790  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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