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6608 Davidecrespi (1991 VC4)
Classification: Main-belt Asteroid          SPK-ID: 2006608
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1921875090803146 5.371e-08  
a 2.450895817026726 1.2885e-08 AU
q 1.979864254936997 1.3392e-07 AU
i 11.11789381682467 5.9776e-06 deg
node 222.0549484211242 2.8825e-05 deg
peri 194.9465167290903 3.3388e-05 deg
M 345.5560438756949 1.6779e-05 deg
tp 2457056.730165600386
(2015-Feb-03.23016560)
6.5375e-05 JED
period 1401.476122049128
3.84
1.1052e-05
3.026e-08
d
yr
n .2568720182500409 2.0256e-09 deg/d
Q 2.921927379116455 1.5361e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1159  
   data-arc span      22339 days (61.16 yr)  
   first obs. used      1953-12-29  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50636  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:04:50  

Additional Information
 Earth MOID = .992899 AU 
 T_jup = 3.445 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO319167  
rotation period rot_per 20. h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2010) http://www.asu.cas.cz/~ppravec/neo.htm]

6608 Davidecrespi           Discovered 1991 Nov. 2 by E. F. Helin at Palomar.
Italian amateur astronomer Davide Crespi (b. 1970) is an assiduous observer of minor planets from Suno Observatory in Novara. The name was suggested by S. Foglia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

Alternate Designations
 1991 VC4 = 1980 XH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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