Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
20497 Marenka (1999 RS)
Classification: Main-belt Asteroid          SPK-ID: 2020497
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0548736558557303 3.6539e-08  
a 3.178370734997849 2.1639e-08 au
q 3.003961913103653 1.1629e-07 au
i 9.728191030954322 4.4596e-06 deg
node 161.7997246742966 2.4664e-05 deg
peri 282.0100516294834 4.9139e-05 deg
M 177.5829313319116 4.4003e-05 deg
tp 2457979.551168156034
(2017-Aug-14.05116816)
0.00025033 TDB
period 2069.689787792012
5.67
2.1136e-05
5.787e-08
d
yr
n .1739391101620381 1.7763e-09 deg/d
Q 3.352779556892046 2.2827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1231  
   data-arc span      11955 days (32.73 yr)  
   first obs. used      1987-09-18  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:42:26  

Additional Information
 Earth MOID = 2.04004 au 
 Jupiter MOID = 1.7825 au 
 T_jup = 3.175 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO347682  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-02 19:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin