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6830 Johnbackus (1991 JB1)
Classification: Main-belt Asteroid          SPK-ID: 2006830
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404998377380419 5.9904e-08  
a 3.172966233558104 2.9481e-08 AU
q 2.727164992594904 1.8788e-07 AU
i 5.085114447024243 6.3518e-06 deg
node 79.14632492362891 5.9819e-05 deg
peri 153.7791092333991 6.3668e-05 deg
M 45.73014282403187 1.9946e-05 deg
tp 2456738.261374770237
(2014-Mar-21.76137477)
0.00011489 JED
period 2064.413081891864
5.65
2.8772e-05
7.877e-08
d
yr
n .1743837040937998 2.4304e-09 deg/d
Q 3.618767474521304 3.3624e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1065  
   data-arc span      29358 days (80.38 yr)  
   first obs. used      1934-04-06  
   last obs. used      2014-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52253  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:50:31  

Additional Information
 Earth MOID = 1.7188 AU 
 T_jup = 3.180 
[ 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 12.5 mag n/a MPO263409  

6830 Johnbackus           Discovered 1991 May 5 by S. Otomo and O. Muramatsu at Kiyosato.
John Backus (1924-2007) was a U.S. computer scientist, best known for inventing the first high-level programming language FORTRAN in 1954. The language was widely adopted by scientists and engineers for numerical calculations and is still very widely used. The name was suggested by E. Goffin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 1991 JB1 = 1934 GK = 1968 HN1 = 1985 GN = 1987 SO10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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