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20963 Pisarenko (1977 QN1)
Classification: Main-belt Asteroid          SPK-ID: 2020963
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1832097623854341 3.8814e-08  
a 2.616840708798656 1.2621e-08 au
q 2.137409944339123 1.031e-07 au
i 12.90925024508356 4.9468e-06 deg
node 343.2155562331044 1.4198e-05 deg
peri 308.7907343379379 1.8375e-05 deg
M 72.52988742785281 1.0671e-05 deg
tp 2458688.985073993268
(2019-Jul-24.48507399)
4.5725e-05 TDB
period 1546.195331875802
4.23
1.1186e-05
3.063e-08
d
yr
n .2328295737145046 1.6843e-09 deg/d
Q 3.096271473258189 1.4933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2899  
   data-arc span      15739 days (43.09 yr)  
   first obs. used      1977-08-19  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:54:43  

Additional Information
 Earth MOID = 1.14763 au 
 Jupiter MOID = 2.24571 au 
 T_jup = 3.347 
[ 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 13.0   n/a MPO435894  
diameter diameter 6.641 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.304   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20963 Pisarenko           Discovered 1977 Aug. 19 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Georgij Stepanovich Pisarenko (1910-2000), a specialist in mechanics and in the theory of the strength of materials, was head of both the Ukrainian Space Research Committee and the faculty at Kiev Polytechnical Institute.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1977 QN1 = 1998 QA17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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