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55720 Daandehoop (1972 RE)
Classification: Inner Main-belt Asteroid          SPK-ID: 2055720
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0985031896844569 7.2872e-08  
a 1.917248687909615 1.1678e-08 AU
q 1.728393576732178 1.4142e-07 AU
i 22.61435711759648 1.0349e-05 deg
node 178.4788497799244 1.947e-05 deg
peri 274.0366963150009 5.5377e-05 deg
M 239.9366994322547 5.325e-05 deg
tp 2457323.887983271725
(2015-Oct-28.38798327)
0.00014396 JED
period 969.6524535582942
2.65
8.8594e-06
2.426e-08
d
yr
n .3712670438556853 3.3921e-09 deg/d
Q 2.106103799087051 1.2829e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      399  
   data-arc span      15322 days (41.95 yr)  
   first obs. used      1972-09-15  
   last obs. used      2014-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50926  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:57:46  

Additional Information
 Earth MOID = .85097 AU 
 T_jup = 3.829 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO244642  

55720 Daandehoop           Discovered 1972 Sept. 15 by T. Gehrels at Palomar.
Daniël "Daan" de Hoop (b. 1945), honorary member and chairman of the Dutch Association for Spaceflight (1995-2005), made many valuable contributions to the public understanding of spaceflight and space exploration. The name was suggested by C. E. Koppeschaar.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100130/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1972 RE = 2000 BY 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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