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19504 Vladalekseev (1998 LL2)
Classification: Main-belt Asteroid          SPK-ID: 2019504
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04460583174113165 6.5269e-08  
a 2.99092014370209 3.3824e-08 AU
q 2.857507663020954 1.9416e-07 AU
i 11.00655100869025 6.8806e-06 deg
node 140.5324354952437 3.2011e-05 deg
peri 45.428236681321 8.6263e-05 deg
M 24.87962704950418 7.7138e-05 deg
tp 2456269.928913313504
(2012-Dec-08.42891331)		 0.00040515 JED
period 1889.320571952677
5.17		 3.2049e-05
8.775e-08		 d
yr
n .190544688574437 3.2323e-09 deg/d
Q 3.124332624383227 3.5333e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      993  
   data-arc span      7712 days (21.11 yr)  
   first obs. used      1992-03-11  
   last obs. used      2013-04-22  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .51323  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 14:22:48  

Additional Information
 Earth MOID = 1.8733 AU 
 T_jup = 3.227 
[ 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 13.1 mag n/a PDS3 (MPO 6568)  

19504 Vladalekseev           Discovered 1998 June 1 by E. W. Elst at the European Southern Observatory.
Vladmimir Alekseev (b. 1935), a physicist at the Troitsk Institute in Moscow, has searched the Tunguska site for pieces of the impacting body. He made radar measurements up to a depth of 80 meters.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Alternate Designations
 1998 LL2 = 1992 EN3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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