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13225 Manfredi (1997 QU1)
Classification: Main-belt Asteroid          SPK-ID: 2013225
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06703567897868228 5.9962e-08  
a 2.919926960786724 2.927e-08 AU
q 2.724187674402226 1.8311e-07 AU
i 2.468953324450718 6.1111e-06 deg
node 162.5621660135275 0.00013487 deg
peri 3.506580481490928 0.0001429 deg
M 330.8026928484032 5.0841e-05 deg
tp 2457148.307580127643
(2015-May-05.80758013)
0.00025832 JED
period 1822.453302617037
4.99
2.7403e-05
7.503e-08
d
yr
n .1975359256026155 2.9702e-09 deg/d
Q 3.115666247171223 3.1232e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      9653 days (26.43 yr)  
   first obs. used      1987-10-18  
   last obs. used      2014-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56565  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:35:29  

Additional Information
 Earth MOID = 1.73196 AU 
 T_jup = 3.275 
[ 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 13.7 mag n/a MPO247482  

13225 Manfredi           Discovered 1997 Aug. 29 at Osservatorio San Vittore.
The brothers Eustachio (1674-1739), Gabriele (1681-1761) and Eraclito (1682-1759) Manfredi were professors at the University of Bologna, of astronomy, mathematics and medicine-cum-geometry. Eustachio was the author of the famous Istituzioni astronomiche, published as the second volume of his works.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1997 QU1 = 1995 EN2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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