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31431 Cabibbo (1999 BP9)
Classification: Main-belt Asteroid          SPK-ID: 2031431
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2656699003014333 5.7819e-08  
a 2.758235784029303 2.1803e-08 au
q 2.025455558278392 1.579e-07 au
i 9.892065902453691 6.2439e-06 deg
node 135.2669191201819 4.2033e-05 deg
peri 119.3508916444871 4.4492e-05 deg
M 131.4086654647625 1.9942e-05 deg
tp 2456789.745024478167
(2014-May-12.24502448)
8.6839e-05 JED
period 1673.190960506474
4.58
1.9839e-05
5.432e-08
d
yr
n .215157748575828 2.5511e-09 deg/d
Q 3.491016009780214 2.7595e-08 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      8939 days (24.47 yr)  
   first obs. used      1991-06-13  
   last obs. used      2015-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5507  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:16:43  

Additional Information
 Earth MOID = 1.03091 au 
 Jupiter MOID = 1.68162 au 
 T_jup = 3.269 
[ 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 14.3 mag n/a MPO358921  
rotation period rot_per 7.6103 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

31431 Cabibbo           Discovered 1999 Jan. 21 at the Osservatorio San Vittore.
Nicola Cabibbo (1935-2010) was an Italian physicist known for his work on the weak interaction and the so-called Cabibbo angle.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110218/MPCPages.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 1999 BP9 = 1991 LN 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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