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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2203447289355723 6.2803e-08  
a 2.355347177209691 2.1806e-08 AU
q 1.836358841898257 1.4095e-07 AU
i 2.866537264412635 7.2356e-06 deg
node 196.9026000324434 0.00012071 deg
peri 139.4181017155211 0.00012225 deg
M 42.59210965490933 2.1422e-05 deg
tp 2456644.290488407858
(2013-Dec-17.79048841)
7.7112e-05 JED
period 1320.324929401316
3.61
1.8336e-05
5.02e-08
d
yr
n .2726601550750368 3.7865e-09 deg/d
Q 2.874335512521126 2.6611e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      6647 days (18.20 yr)  
   first obs. used      1994-03-10  
   last obs. used      2012-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 05:53:07  

Additional Information
 Earth MOID = .826884 AU 
 T_jup = 3.520 
[ 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 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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