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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04490475184585445 5.8237e-08  
a 2.991736397687164 3.0086e-08 AU
q 2.857393217160812 1.6767e-07 AU
i 11.00722849681285 6.2726e-06 deg
node 140.5212828996617 2.9248e-05 deg
peri 45.61278031147091 7.7251e-05 deg
M 100.8830649700176 6.9547e-05 deg
tp 2456270.837553682949
(2012-Dec-09.33755368)
0.00036544 JED
period 1890.094048300456
5.17
2.8511e-05
7.806e-08
d
yr
n .1904667126610481 2.8731e-09 deg/d
Q 3.126079578213517 3.1437e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      8150 days (22.31 yr)  
   first obs. used      1992-03-11  
   last obs. used      2014-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48988  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:42:57  

Additional Information
 Earth MOID = 1.87361 AU 
 T_jup = 3.226 
[ 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 13.0 mag n/a MPO263522  

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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