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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.

Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1890899320514476 2.8894e-08  
a 2.393580021031128 7.0298e-09 au
q 1.94097813749465 7.1668e-08 au
i 2.193091578744188 4.2691e-06 deg
node 10.77518972372996 7.8601e-05 deg
peri 264.6955965609515 7.9573e-05 deg
M 6.047688346171137 1.3471e-05 deg
tp 2459177.777440172333
5.0583e-05 TDB
period 1352.603022796167
n .2661534788350468 1.1725e-09 deg/d
Q 2.846181904567607 8.3591e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1963  
   data-arc span      25599 days (70.09 yr)  
   first obs. used      1950-07-11  
   last obs. used      2020-08-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:56:07  

Additional Information
 Earth MOID = .924303 au 
 Jupiter MOID = 2.27756 au 
 T_jup = 3.505 
[ show covariance matrix ]

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 14.45   n/a E2021B10  
diameter diameter 3.832 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 6.180 h n/a LCDB (Rev. 2020-October); 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.251   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2030-Nov-05 17:05 < 00:01 Hebe 0.0340693798402429 0.0340672899410102 0.0340714697421151 7.89054470761097 7.89054468448573 2462811.211845100 0.27671648016187 105.417981613627 36.7712339945389 -9.3114100607314 52708.691739535 T 27 CATAB v2.0f-lin.ifort 2021-Apr-12 20:56:16 2021-Apr-12 20:56

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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