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69977 Saurodonati (1998 WL9)
Classification: Main-belt Asteroid          SPK-ID: 2069977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166036003295694 8.3031e-08  
a 3.168581735247897 5.1549e-08 AU
q 2.642483087811601 2.5296e-07 AU
i 4.387685243820959 8.9099e-06 deg
node 310.7543528774533 0.00011314 deg
peri 184.3541470921239 0.00011686 deg
M 257.1961725683719 2.968e-05 deg
tp 2457588.805057248973
(2016-Jul-19.30505725)
0.00017763 JED
period 2060.135560132582
5.64
5.0274e-05
1.376e-07
d
yr
n .1747457822517426 4.2643e-09 deg/d
Q 3.694680382684193 6.0108e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      9700 days (26.56 yr)  
   first obs. used      1988-02-11  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57063  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 15:14:52  

Additional Information
 Earth MOID = 1.65688 AU 
 T_jup = 3.177 
[ 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 14.4 mag n/a MPO266255  

69977 Saurodonati           Discovered 1998 Nov. 28 by E. Mazzoni and M. Ziboli at the Monte Agliale Observatory.
Italian amateur astronomer and writer Sauro Donati (b. 1959) discovered the first minor planet from Lucca in 1998. Now he manages a private observatory and has discovered about 20 minor planets. Also a popularizer of astronomy, he is engaged in the planning of the first planetarium in Lucca.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

[ show close-approach data ]
Alternate Designations
 1998 WL9 = 1988 CU2 = 1988 DT3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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