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42924 Betlem (1999 TJ2)
Classification: Main-belt Asteroid          SPK-ID: 2042924
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: MPO231687 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.2205485 n/a  
a 2.3558353 n/a AU
q 1.8362594 n/a AU
i 2.86645 n/a deg
node 196.90954 n/a deg
peri 139.41991 n/a deg
M 293.54552 n/a deg
tp 2456644.3021741
(2013-Dec-17.80217410)
n/a JED
period 1320.7353767
3.62
n/a
n/a
d
yr
n 0.27257542 n/a deg/d
Q 2.8754112 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      366  
   first obs. used      1994-??-??  
   last obs. used      2012-05-21  
   # oppositions      11  
   planetary ephem.      DE403  
   condition code      0  
   fit RMS      0.49  
   data source      MPC:mpn  
   producer      MPCLINUX  

Additional Information
 T_jup = 3.520 

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2 mag n/a MPO231687  

42924 Betlem           Discovered 1999 Oct. 2 at Ondrejov.
Hans Betlem (b. 1954), Dutch amateur meteor astronomer and founder of the Dutch Meteor Society, is well known for his photographic observations of major meteor streams and has published many precise trajectories and orbits of meteors. He has organized several successful Leonid expeditions.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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