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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07473294848956391 5.8004e-08  
a 2.258986375921749 1.327e-08 AU
q 2.090165663451363 1.263e-07 AU
i 5.468922975739778 6.5401e-06 deg
node 153.3427866326795 4.739e-05 deg
peri 328.7329134577532 6.1867e-05 deg
M 218.3229190698195 4.1193e-05 deg
tp 2457488.551828063536
(2016-Apr-10.05182806)
0.00014383 JED
period 1240.134656567766
3.40
1.0928e-05
2.992e-08
d
yr
n .2902910567763237 2.5579e-09 deg/d
Q 2.427807088392136 1.4262e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      474  
   data-arc span      6769 days (18.53 yr)  
   first obs. used      1996-02-15  
   last obs. used      2014-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61728  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:27:45  

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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