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69971 Tanzi (1998 WD2)
Classification: Main-belt Asteroid          SPK-ID: 2069971
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2849418023210011 1.3707e-07  
a 2.906857315203144 2.2244e-08 AU
q 2.078572152719174 3.932e-07 AU
i 11.2421009122611 1.1512e-05 deg
node 298.3166845749303 2.8495e-05 deg
peri 195.016086563733 3.0701e-05 deg
M 53.48978322219386 1.0728e-05 deg
tp 2456731.530933319087
(2014-Mar-15.03093332)
5.4191e-05 JED
period 1810.231004356599
4.96
2.0779e-05
5.689e-08
d
yr
n .1988696465443386 2.2827e-09 deg/d
Q 3.735142477687115 2.8583e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      587  
   data-arc span      12930 days (35.40 yr)  
   first obs. used      1978-12-22  
   last obs. used      2014-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60338  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 15:34:20  

Additional Information
 Earth MOID = 1.09559 AU 
 T_jup = 3.195 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO250831  

69971 Tanzi           Discovered 1998 Nov. 18 by M. Cavagna at Sormano.
Pepe Tanzi (b. 1945) studied at the Politecnico of Milano, where he graduated in architecture in 1969. He started working as an industrial designer with special attention to lighting systems. One of his latest products allows the light to be placed where it is needed, thereby saving energy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 1998 WD2 = 1978 YP 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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