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20497 Marenka (1999 RS)
Classification: Main-belt Asteroid          SPK-ID: 2020497
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05732225130058484 6.9502e-08  
a 3.175817598254626 4.4908e-08 AU
q 2.993772583802654 2.1031e-07 AU
i 9.729078333955773 6.5252e-06 deg
node 161.8706330118174 4.0853e-05 deg
peri 281.5309988235229 7.6218e-05 deg
M 189.6792403172587 6.6687e-05 deg
tp 2457978.517977898607
(2017-Aug-13.01797790)
0.00039208 JED
period 2067.196463304499
5.66
4.3847e-05
1.2e-07
d
yr
n .1741489047560216 3.6938e-09 deg/d
Q 3.357862612706597 4.7482e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      9812 days (26.86 yr)  
   first obs. used      1987-09-18  
   last obs. used      2014-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5285  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:34:32  

Additional Information
 Earth MOID = 2.02963 AU 
 T_jup = 3.176 
[ 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 13.5 mag n/a MPO302190  

20497 Mařenka           Discovered 1999 Sept. 4 by L. Šarounová at Ondřejov.
Mařenka is the nickname of the main soprano character in Smetana's The Bartered Bride. Jeníček (Jeník) and Mařenka are also known as the main characters in the Czech version of the fairy tale Hansel and Gretel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

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