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13642 Ricci (1996 HX)
Classification: Main-belt Asteroid          SPK-ID: 2013642
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615131299054885 7.5933e-08  
a 3.028572520670006 2.9109e-08 au
q 2.539418293710839 2.1825e-07 au
i 6.210259881330164 8.7346e-06 deg
node 2.461826873083386 5.6173e-05 deg
peri 316.666768346702 6.093e-05 deg
M 196.9536240395917 2.7668e-05 deg
tp 2458272.394709695675
(2018-Jun-02.89470970)
0.00015487 JED
period 1925.109304892868
5.27
2.7755e-05
7.599e-08
d
yr
n .1870023686888958 2.696e-09 deg/d
Q 3.517726747629174 3.381e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      7182 days (19.66 yr)  
   first obs. used      1996-04-19  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51267  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:24:52  

Additional Information
 Earth MOID = 1.5292 au 
 Jupiter MOID = 1.81711 au 
 T_jup = 3.215 
[ 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 13.5 mag n/a MPO279659  
rotation period rot_per 3.076 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.]

13642 Ricci           Discovered 1996 Apr. 19 by P. G. Comba at Prescott.
Gregorio Ricci-Curbastro (1853-1925) was a professor of mathematics at the University of Padua. Building on the work of Riemann and Christoffel, he developed tensor analysis, a formalism for the study of those properties of physical systems or abstract spaces that remain invariant under changes of coordinates.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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