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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09850319108821526 7.3218e-08  
a 1.917248688164726 1.177e-08 AU
q 1.728393574270806 1.4195e-07 AU
i 22.61435862913889 1.1013e-05 deg
node 178.4788515079344 1.9904e-05 deg
peri 274.0366920636487 5.7502e-05 deg
M 239.9367018076064 5.4935e-05 deg
tp 2457323.887976938311
(2015-Oct-28.38797694)
0.00014839 JED
period 969.6524537518288
2.65
8.9291e-06
2.445e-08
d
yr
n .3712670437815834 3.4188e-09 deg/d
Q 2.106103802058646 1.2929e-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 = .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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