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8688 Delaunay (1992 PV1)
Classification: Main-belt Asteroid          SPK-ID: 2008688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736404092107721 2.1607e-08  
a 2.272748672964534 5.888e-09 au
q 1.878107663357733 5.0367e-08 au
i 4.446510456612794 7.3556e-07 deg
node 151.7589647548521 1.0732e-05 deg
peri 176.4173206354884 1.0194e-05 deg
M 93.30941175769694 3.9946e-06 deg
tp 2458876.124162164544
(2020-Jan-27.62416216)
1.3347e-05 TDB
period 1251.484704715561
3.43
4.8633e-06
1.331e-08
d
yr
n .2876583298569527 1.1178e-09 deg/d
Q 2.667389682571335 6.9103e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2241  
   data-arc span      10486 days (28.71 yr)  
   first obs. used      1992-06-28  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:48:41  

Additional Information
 Earth MOID = .864867 au 
 Jupiter MOID = 2.66971 au 
 T_jup = 3.587 
[ 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 14.36   n/a MPCxxxxx  

8688 Delaunay           Discovered 1992 Aug. 8 by E. W. Elst at Caussols.
Charles-Eugène Delaunay (1816-1872) was a French mathematician and astronomer famous for his Théorie du mouvement de la lune, 1860-1867. Made a member of the Académie des Sciences in 1855, he succeeded Leverrier as director of the Paris Observatory in 1870.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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