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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836267382884313 4.0297e-08  
a 2.617977069936213 1.3102e-08 au
q 2.137246479669921 1.0782e-07 au
i 12.90694892381997 5.1221e-06 deg
node 343.2311177147322 1.4312e-05 deg
peri 308.7957691430356 1.8781e-05 deg
M 339.3942339949367 1.0882e-05 deg
tp 2458689.059151619138
(2019-Jul-24.55915162)
4.6747e-05 TDB
period 1547.202592471239
4.24
1.1615e-05
3.18e-08
d
yr
n .2326779968905023 1.7467e-09 deg/d
Q 3.098707660202504 1.5508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1790  
   data-arc span      15447 days (42.29 yr)  
   first obs. used      1977-08-19  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43735  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:48:03  

Additional Information
 Earth MOID = 1.14675 au 
 Jupiter MOID = 2.24137 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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