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7711 Rip (1994 XF)
Classification: Main-belt Asteroid          SPK-ID: 2007711
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2685483777923299 3.7319e-08  
a 3.080767034897242 2.0984e-08 au
q 2.253432045319502 1.141e-07 au
i 12.09428312783636 4.6269e-06 deg
node 60.93464408336242 2.6931e-05 deg
peri 357.8334233464163 2.8908e-05 deg
M 273.2145301944414 1.2461e-05 deg
tp 2459476.636234215990
(2021-Sep-19.13623422)
7.0022e-05 TDB
period 1975.089202164779
5.41
2.018e-05
5.525e-08
d
yr
n .1822702486578455 1.8623e-09 deg/d
Q 3.908102024474983 2.662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1558  
   data-arc span      9358 days (25.62 yr)  
   first obs. used      1994-11-03  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:43:18  

Additional Information
 Earth MOID = 1.266 au 
 Jupiter MOID = 1.46122 au 
 T_jup = 3.138 
[ 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 12.7   n/a MPO263417  
diameter diameter 17.087 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.055   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

7711 Říp           Discovered 1994 Dec. 2 by Z. Moravec at Klet.
Named for a hill in central Bohemia (459 m above sea level) located about 30 km north of Prague. When a mythological ancestor of Čech, the Father of the Czech nation, came to Bohemia, he is said to have climbed this hill, looked around and made the decision to stay there because of the wealth and fertility of the country.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980211/MPCPages.arcLast Updated: 2009-11-17

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Alternate Designations
 1994 XF = 1951 XT = 1951 YL = 1994 VL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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