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31109 Janpalous (1997 PL4)
Classification: Main-belt Asteroid          SPK-ID: 2031109
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07319767021807803 7.4118e-08  
a 2.304082523971833 1.9225e-08 AU
q 2.135429051226906 1.775e-07 AU
i 6.897171532651679 9.8838e-06 deg
node 344.5071814557248 5.5944e-05 deg
peri 241.8558542463749 9.8132e-05 deg
M 86.64725749130162 8.5265e-05 deg
tp 2456693.033508472698
(2014-Feb-04.53350847)
0.00030134 JED
period 1277.454591807945
3.50
1.5988e-05
4.377e-08
d
yr
n .2818104082200701 3.527e-09 deg/d
Q 2.47273599671676 2.0632e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      6261 days (17.14 yr)  
   first obs. used      1996-03-20  
   last obs. used      2013-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58293  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:45:57  

Additional Information
 Earth MOID = 1.1385 AU 
 T_jup = 3.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO263608  

31109 Janpalouš           Discovered 1997 Aug. 14 by M. Tichy and Z. Moravec at Klet.
Jan Palouš (b. 1949) supervises dynamical studies of galaxies in the Astronomical Institute of the Czech Academy of Sciences. As a leading representative in both Czech and international astronomical bodies he was instrumental in negotiating the entry of the Czech Republic into the European Southern Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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