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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09864151120774005 3.8281e-08  
a 1.917005835038055 6.9328e-09 au
q 1.727909482475846 7.2172e-08 au
i 22.61601486621522 5.3484e-06 deg
node 178.4366566356105 9.7535e-06 deg
peri 274.2377703657921 2.7591e-05 deg
M 262.3437412249624 2.773e-05 deg
tp 2459263.485110541218
(2021-Feb-17.98511054)
7.5196e-05 TDB
period 969.4682243862347
2.65
5.2591e-06
1.44e-08
d
yr
n .3713375961630038 2.0144e-09 deg/d
Q 2.106102187600265 7.6166e-09 au
  Orbit Determination Parameters
   # obs. used (total)      950  
   data-arc span      17490 days (47.89 yr)  
   first obs. used      1972-09-15  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 05:08:04  

Additional Information
 Earth MOID = .849544 au 
 Jupiter MOID = 3.03965 au 
 T_jup = 3.829 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO474440  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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