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357546 Edwardhalbach (2004 RA339)
Classification: Main-belt Asteroid          SPK-ID: 2357546
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09431666205680854 4.411e-08  
a 3.045301365651117 3.6803e-08 au
q 2.758078705885863 1.3821e-07 au
i 9.977387388157084 1.0717e-05 deg
node 185.4929298385781 3.2453e-05 deg
peri 103.9491896399142 7.007e-05 deg
M 28.42849827902022 6.0133e-05 deg
tp 2458847.216552032364
(2019-Dec-29.71655203)
0.00032429 TDB
period 1941.081823132124
5.31
3.5188e-05
9.634e-08
d
yr
n .1854635882474573 3.3621e-09 deg/d
Q 3.332524025416371 4.0274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      6267 days (17.16 yr)  
   first obs. used      2003-04-05  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56834  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 06:34:31  

Additional Information
 Earth MOID = 1.76435 au 
 Jupiter MOID = 1.87569 au 
 T_jup = 3.209 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO437509  

357546 Edwardhalbach           Discovered 2004 Sept. 15 by W. R. Cooney Jr. and J. Gross at Sonoita.
Edward A. Halbach (1909-2011) was a prominent amateur astronomer who made contributions to the study of variable stars, lunar occultations, solar astronomy and aurorae. He mentored and encouraged generations of astronomers, both amateur and professional.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-01-16Last Updated: 2014-01-21

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