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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936911212842068 3.9095e-08  
a 2.449911923690815 8.0396e-09 au
q 1.975385736143593 9.4758e-08 au
i 11.12995595372762 4.7346e-06 deg
node 221.9889267242587 1.6854e-05 deg
peri 194.8656723621123 1.9789e-05 deg
M 139.477611152604 9.7321e-06 deg
tp 2458457.842095081512
(2018-Dec-05.34209508)
3.7578e-05 TDB
period 1400.63228898374
3.83
6.8944e-06
1.888e-08
d
yr
n .257026774858379 1.2652e-09 deg/d
Q 2.924438111238036 9.5968e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2316  
   data-arc span      24270 days (66.45 yr)  
   first obs. used      1953-12-29  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:32:49  

Additional Information
 Earth MOID = .988773 au 
 Jupiter MOID = 2.44887 au 
 T_jup = 3.445 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO319167  
diameter diameter 5.565 km 0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20. h n/a LCDB (Rev. 2019-August); 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]
geometric albedo albedo 0.174   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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