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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2658612341277815 5.7682e-08  
a 2.757802871662872 2.1777e-08 au
q 2.024609996721441 1.5744e-07 au
i 9.892248672099356 6.1288e-06 deg
node 135.2620214243852 4.2034e-05 deg
peri 119.3437843083078 4.4461e-05 deg
M 174.4551070084242 2.0345e-05 deg
tp 2456789.866694938157
(2014-May-12.36669494)
8.6723e-05 JED
period 1672.797058375433
4.58
1.9814e-05
5.425e-08
d
yr
n .2152084128780214 2.5491e-09 deg/d
Q 3.490995746604303 2.7566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      695  
   data-arc span      8970 days (24.56 yr)  
   first obs. used      1991-06-13  
   last obs. used      2016-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55349  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 21:09:40  

Additional Information
 Earth MOID = 1.03113 au 
 Jupiter MOID = 1.68273 au 
 T_jup = 3.270 
[ 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. 2016-February); 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. (2016) 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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