Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
6137 Johnfletcher (1991 BY)
Classification: Outer Main-belt Asteroid          SPK-ID: 2006137
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06342845301524369 5.5603e-08  
a 3.213782490697855 3.4465e-08 AU
q 3.009937238985413 1.7473e-07 AU
i 15.44060828633777 9.1541e-06 deg
node 337.0016664557865 2.2772e-05 deg
peri 87.78902006050646 9.2139e-05 deg
M 126.4176859311256 8.616e-05 deg
tp 2456261.527149561898
(2012-Nov-30.02714956)
0.00050142 JED
period 2104.375065864235
5.76
3.3851e-05
9.268e-08
d
yr
n .171072165717832 2.7519e-09 deg/d
Q 3.417627742410296 3.6651e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1019  
   data-arc span      21308 days (58.34 yr)  
   first obs. used      1956-02-04  
   last obs. used      2014-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50894  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:33:37  

Additional Information
 Earth MOID = 2.07399 AU 
 T_jup = 3.131 
[ 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 11.3 mag n/a MPO279579  
diameter diameter 28.60 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
geometric albedo albedo 0.0860   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9

6137 Johnfletcher           Discovered 1991 Jan. 25 by A. Natori and T. Urata at Yakiimo.
British amateur astronomer John Fletcher (b. 1947) lives in Tuffley, near Gloucester, where he regularly makes observations of minor planets. As a broadcaster and lecturer he is also very active in educational work. The name was suggested by P. Moore.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080618/MPCPages.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1991 BY = 1956 CD = 1971 TQ2 = 1974 FU = 1985 DP4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-27 21:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin