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31015 Boccardi (1996 DS1)
Classification: Main-belt Asteroid          SPK-ID: 2031015
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07473294885816895 5.7995e-08  
a 2.258986375973373 1.3259e-08 AU
q 2.090165662666454 1.2629e-07 AU
i 5.468923011012972 6.531e-06 deg
node 153.3427869642523 4.7196e-05 deg
peri 328.7329133425732 6.1631e-05 deg
M 218.3229188468891 4.1093e-05 deg
tp 2457488.551828848221
(2016-Apr-10.05182885)
0.0001435 JED
period 1240.134656610277
3.40
1.0919e-05
2.989e-08
d
yr
n .2902910567663728 2.5558e-09 deg/d
Q 2.427807089280292 1.425e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      6853 days (18.76 yr)  
   first obs. used      1996-02-15  
   last obs. used      2014-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60311  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:22:56  

Additional Information
 Earth MOID = 1.10781 AU 
 T_jup = 3.612 
[ 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 16.1 mag n/a MPO302247  

31015 Boccardi           Discovered 1996 Feb. 16 at the Osservatorio San Vittore.
Giovanni Boccardi (1859-1936) worked at the observatories of Collegio Romano (Rome) and Collurania (Teramo). Director of the Turin Observatory from 1900 until 1923, he founded the magazine Rivista di Astronomia e Scienze Affini and the society Urania for the popularization of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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