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7542 Johnpond (1953 GN)
Classification: Main-belt Asteroid          SPK-ID: 2007542
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1309233811149982 6.7098e-08  
a 2.259028139997172 1.0174e-08 AU
q 1.963268537874816 1.5301e-07 AU
i 5.813705110367979 6.7475e-06 deg
node 165.1781240681692 4.6454e-05 deg
peri 38.81523852024673 5.0693e-05 deg
M 357.0649915400727 2.0212e-05 deg
tp 2456810.610851799660
(2014-Jun-02.11085180)
6.963e-05 JED
period 1240.169048087743
3.40
8.3779e-06
2.294e-08
d
yr
n .2902830066232467 1.961e-09 deg/d
Q 2.554787742119527 1.1506e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1126  
   data-arc span      22351 days (61.19 yr)  
   first obs. used      1953-04-07  
   last obs. used      2014-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54348  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:17:16  

Additional Information
 Earth MOID = .964536 AU 
 T_jup = 3.603 
[ 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 14.2 mag n/a PDS3 (MPC 29587)  

7542 Johnpond           Discovered 1953 Apr. 7 by K. Reinmuth at Heidelberg.
John Pond (1767-1836), sixth Astronomer Royal, is famous for the introduction of then-modern transit instruments at Greenwich Observatory and for publishing a high-precision star catalogue. Pond received the Copley Medal of the Royal Society. The name was suggested by L. D. Schmadel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
Alternate Designations
 1953 GN = 1991 PX1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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