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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09855167651532024 7.3243e-08  
a 1.917202366024014 1.1745e-08 AU
q 1.728258858633208 1.42e-07 AU
i 22.61359533673171 1.1012e-05 deg
node 178.483734857422 1.9905e-05 deg
peri 274.0089742525881 5.7466e-05 deg
M 165.7119882009298 5.4808e-05 deg
tp 2456354.174409223563
(2013-Mar-02.67440922)
0.00014717 JED
period 969.6173126876743
2.65
8.9097e-06
2.439e-08
d
yr
n .3712804993158785 3.4117e-09 deg/d
Q 2.106145873414819 1.2902e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      391  
   data-arc span      15268 days (41.80 yr)  
   first obs. used      1972-09-15  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51357  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:43:44  

Additional Information
 Earth MOID = .850582 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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