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9718 Gerbefremov (1976 YR1)
Classification: Main-belt Asteroid          SPK-ID: 2009718
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489864301954257 5.3924e-08  
a 2.363788615930364 1.4186e-08 AU
q 2.011616188306313 1.277e-07 AU
i 5.92522497378387 6.9008e-06 deg
node 84.53072185306731 6.829e-05 deg
peri 25.00248470690996 7.7589e-05 deg
M 86.96072971487587 3.3082e-05 deg
tp 2456479.849400214070
(2013-Jul-06.34940021)
0.00012125 JED
period 1327.42924652791
3.63
1.195e-05
3.272e-08
d
yr
n .271200895220317 2.4414e-09 deg/d
Q 2.715961043554416 1.63e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      899  
   data-arc span      21659 days (59.30 yr)  
   first obs. used      1954-12-21  
   last obs. used      2014-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55248  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:57:11  

Additional Information
 Earth MOID = 1.02977 AU 
 T_jup = 3.527 
[ 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 13.7 mag n/a MPO256936  

9718 Gerbefremov           Discovered 1976 Dec. 16 by L. I. Chernykh at the Crimean Astrophysical Observatory.
Gerbert Alexandrovich Efremov (b. 1933), a well-known designer of space technology, created the Proton and Almaz space stations. He is a member of Tsiolkovsky Russian Academy of Cosmonautics and was decorated with the Leonardo da Vinci Medal of the International Association of Peace Foundations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1976 YR1 = 1992 FF1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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