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8858 Cornus (1991 PT7)
Classification: Main-belt Asteroid          SPK-ID: 2008858
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1888672922228872 2.8942e-08  
a 2.392963486280616 7.1036e-09 au
q 1.941010952238556 7.1742e-08 au
i 2.193181362374881 4.3025e-06 deg
node 10.78146200745507 7.9051e-05 deg
peri 264.7066596555543 8.0028e-05 deg
M 312.7854883856915 1.352e-05 deg
tp 2459177.827273087101
(2020-Nov-24.32727309)
5.1031e-05 TDB
period 1352.080454264615
3.70
6.0206e-06
1.648e-08
d
yr
n .2662563450751168 1.1856e-09 deg/d
Q 2.844916020322676 8.4453e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1895  
   data-arc span      25543 days (69.93 yr)  
   first obs. used      1950-07-11  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49023  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:52:39  

Additional Information
 Earth MOID = .92618 au 
 Jupiter MOID = 2.2797 au 
 T_jup = 3.505 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO358716  
diameter diameter 3.832 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.180 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.251   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8858 Cornus           Discovered 1991 Aug. 6 by E. W. Elst at the European Southern Observatory.
Named for Cornaceae, the dogwood family, with about 12 genera and 100 species of evergreens, deciduous trees and shrubs. Species include Cornus sanguinea (red dogwood) and Cornus florida (flowering dogwood).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1991 PT7 = 1950 NO1 = 1983 EW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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