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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736149026613214 2.1604e-08  
a 2.273033074605423 5.905e-09 au
q 1.878400658611839 5.038e-08 au
i 4.446733973694356 7.3559e-07 deg
node 151.7555938537091 1.073e-05 deg
peri 176.4678502539339 1.0191e-05 deg
M 149.6285349374683 4.1037e-06 deg
tp 2458876.241742008261
(2020-Jan-27.74174201)
1.3356e-05 TDB
period 1251.719619892677
3.43
4.8777e-06
1.335e-08
d
yr
n .2876043438792361 1.1207e-09 deg/d
Q 2.667665490599008 6.9302e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2247  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1992-06-28  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4952  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:50:44  

Additional Information
 Earth MOID = .866373 au 
 Jupiter MOID = 2.66902 au 
 T_jup = 3.587 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457054.5 (2015-Feb-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735034490100548 2.1554e-08  
q 1.878894896632493 5.0261e-08 au
tp 2457625.532825313984
(2016-Aug-25.03282531)
1.2339e-05 TDB
node 151.7986660390858 1.0736e-05 deg
peri 176.4951832101409 1.0194e-05 deg
i 4.445420208454402 7.3548e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2247  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1992-06-28  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4952  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:50:44  

Additional Information
 Jupiter MOID = 2.66902 au 
 T_jup = 3.587 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.645571298525457E-16 -1.078403368718198E-15 -8.829334836977392E-14 -2.550015845003246E-14 2.202302205623513E-14 2.563665761912363E-15
q -1.078403368718198E-15 2.526209406446684E-15 2.020123984696897E-13 6.045071522202194E-14 -5.520562957654717E-14 -5.794570691911735E-15
tp -8.829334836977392E-14 2.020123984696897E-13 1.522517511404045E-10 4.231428619713434E-11 -5.041436465143093E-12 1.004813058171567E-12
node -2.550015845003246E-14 6.045071522202194E-14 4.231428619713434E-11 1.152514062991774E-10 -1.041051137690597E-10 5.843862705567958E-12
peri 2.202302205623513E-14 -5.520562957654717E-14 -5.041436465143093E-12 -1.041051137690597E-10 1.039258392994632E-10 -5.595881969021776E-12
i 2.563665761912363E-15 -5.794570691911735E-15 1.004813058171567E-12 5.843862705567958E-12 -5.595881969021776E-12 5.409364913853263E-13

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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