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7542 Johnpond (1953 GN)
Classification: Main-belt Asteroid          SPK-ID: 2007542
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310582846041821 3.4367e-08  
a 2.25947471615111 6.8276e-09 au
q 1.963351835745824 7.7706e-08 au
i 5.812806716020537 3.6496e-06 deg
node 165.14634038137 3.4337e-05 deg
peri 38.76662304299032 3.7112e-05 deg
M 275.6586265900056 1.6264e-05 deg
tp 2459291.134939929225
(2021-Mar-17.63493993)
5.6696e-05 TDB
period 1240.536810633945
3.40
5.6229e-06
1.539e-08
d
yr
n .2901969509603114 1.3154e-09 deg/d
Q 2.555597596556395 7.7224e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1951  
   data-arc span      24482 days (67.03 yr)  
   first obs. used      1953-04-07  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50886  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:47:51  

Additional Information
 Earth MOID = .964241 au 
 Jupiter MOID = 2.40477 au 
 T_jup = 3.603 
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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 14.3   n/a MPO347585  
diameter diameter 3.952 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.259   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1953 GN = 1991 PX1 
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