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227770 Wischnewski (2006 US289)
Classification: Main-belt Asteroid          SPK-ID: 2227770
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1443506524043135 9.5561e-08  
a 2.197962179264041 3.9508e-08 AU
q 1.88068490472727 2.2332e-07 AU
i 4.25556882549051 1.2441e-05 deg
node 120.6341927981078 0.00012098 deg
peri 249.048971403074 0.00013161 deg
M 203.8802037653925 5.7742e-05 deg
tp 2457516.659856095379
(2016-May-08.15985610)
0.00019955 JED
period 1190.224127087003
3.26
3.2091e-05
8.786e-08
d
yr
n .3024640416936236 8.1551e-09 deg/d
Q 2.515239453800812 4.5211e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      103  
   data-arc span      5223 days (14.30 yr)  
   first obs. used      2001-02-01  
   last obs. used      2015-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57604  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 23:16:48  

Additional Information
 Earth MOID = .884816 AU 
 T_jup = 3.650 
[ 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 17.8 mag n/a MPO338631  

227770 Wischnewski           Discovered 2006 Oct. 30 by W. Ries at Altschwendt.
Erik Wischnewski (b. 1952) has been a lecturer at adult education centers and planetaria since 1972 and is an author of several astronomical textbooks. His work contributes to the German-language astronomical education.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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