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137217 Racah (1999 NH64)
Classification: Main-belt Asteroid          SPK-ID: 2137217
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: MPO232064 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1259704 n/a  
a 2.2842458 n/a AU
q 1.9964984 n/a AU
i 6.28078 n/a deg
node 211.30840 n/a deg
peri 159.73475 n/a deg
M 322.79182 n/a deg
tp 2456530.8312639
(2013-Aug-26.33126390)
n/a JED
period 1260.9930131
3.45
n/a
n/a
d
yr
n 0.28548929 n/a deg/d
Q 2.5719932 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      197  
   first obs. used      1999-??-??  
   last obs. used      2012-05-27  
   # oppositions      9  
   planetary ephem.      DE403  
   condition code      1  
   fit RMS      0.53  
   data source      MPC:mpu  
   producer      MPCLINUX  

Additional Information
 T_jup = 3.585 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1 mag n/a MPO232064  

137217 Racah           Discovered 1999 July 8 by I. Manulis and A. Gal-Yam at the Wise Observatory.
Italian-born Giulio (Yoel) Racah (1909-1965) was a founder of physics in Israel. He worked with Enrico Fermi and Wolfgang Pauli. In the early 1940s, while working in the Hebrew University of Jerusalem, Racah established the basis for using the principals of symmetry to study the atomic nucleus and atomic spectroscopy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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