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71885 Denning (2000 WD)
Classification: Main-belt Asteroid          SPK-ID: 2071885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.

Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149934073675868 3.5107e-08  
a 2.293280406155074 8.922e-09 au
q 2.029568278201979 8.0207e-08 au
i 5.891956364122485 3.791e-06 deg
node 231.3801487714153 4.409e-05 deg
peri 222.3981901490891 4.864e-05 deg
M 310.872247430581 2.2297e-05 deg
tp 2459569.604582091130
7.9056e-05 TDB
period 1268.481587158909
n .2838038830396527 1.6562e-09 deg/d
Q 2.556992534108169 9.948e-09 au
  Orbit Determination Parameters
   # obs. used (total)      851  
   data-arc span      9305 days (25.48 yr)  
   first obs. used      1995-05-27  
   last obs. used      2020-11-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:59:06  

Additional Information
 Earth MOID = 1.05054 au 
 Jupiter MOID = 2.61483 au 
 T_jup = 3.581 
[ 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 15.73   n/a E2021B10  
diameter diameter 2.007 km 0.323 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 83.6639 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.230   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

71885 Denning           Discovered 2000 Nov. 16 by Spacewatch at Kitt Peak.
British amateur astronomer William Frederick Denning (1848-1931) was renowned for his visual study of the heights and velocities of meteors and for his catalogues of meteor radiants. He also maintained an interest in Jupiter's red spot and discovered five comets, two of them of short period.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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