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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736281763333229 3.1696e-08  
a 2.272361466987753 6.9021e-09 au
q 1.877815489504555 7.4152e-08 au
i 4.446568816626139 3.3132e-06 deg
node 151.7616443641736 4.7845e-05 deg
peri 176.3591228880345 4.8994e-05 deg
M 35.82268425171891 1.0671e-05 deg
tp 2458875.999763744922
(2020-Jan-27.49976374)
3.6954e-05 TDB
period 1251.164896993371
3.43
5.7005e-06
1.561e-08
d
yr
n .2877318576193297 1.3109e-09 deg/d
Q 2.666907444470951 8.1005e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      9944 days (27.23 yr)  
   first obs. used      1992-06-28  
   last obs. used      2019-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:01:13  

Additional Information
 Earth MOID = .866504 au 
 Jupiter MOID = 2.67009 au 
 T_jup = 3.588 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456657.5 (2013-Dec-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730820289432011 3.1528e-08  
q 1.879532692299271 7.3668e-08 au
tp 2456372.240479514537
(2013-Mar-20.74047951)
3.6492e-05 TDB
node 151.8350440682762 4.7937e-05 deg
peri 176.1633653927556 4.9098e-05 deg
i 4.441053234996599 3.3099e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      9944 days (27.23 yr)  
   first obs. used      1992-06-28  
   last obs. used      2019-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:01:13  

Additional Information
 Jupiter MOID = 2.67009 au 
 T_jup = 3.588 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.939973564404847E-16 -2.31639059465464E-15 1.311851762238949E-13 1.516120032391347E-15 5.402101125715044E-14 -3.073045512121295E-16
q -2.31639059465464E-15 5.427011784087914E-15 -3.130805847784165E-13 -3.859779486457907E-15 -1.261954930426099E-13 8.217316888963913E-16
tp 1.311851762238949E-13 -3.130805847784165E-13 1.331678890957957E-9 5.879495309579558E-13 4.010976375172049E-10 8.528718544661907E-13
node 1.516120032391347E-15 -3.859779486457907E-15 5.879495309579558E-13 2.297939146659854E-9 -2.29030374674888E-9 1.406505582212092E-11
peri 5.402101125715044E-14 -1.261954930426099E-13 4.010976375172049E-10 -2.29030374674888E-9 2.410652224964574E-9 -1.377742168808464E-11
i -3.073045512121295E-16 8.217316888963913E-16 8.528718544661907E-13 1.406505582212092E-11 -1.377742168808464E-11 1.095574104409907E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO492852  

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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