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13642 Ricci (1996 HX)
Classification: Main-belt Asteroid          SPK-ID: 2013642
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600743856758551 4.9772e-08  
a 3.025436335073845 1.7134e-08 au
q 2.541141472335489 1.5071e-07 au
i 6.203462134780583 6.2968e-06 deg
node 2.427351418683896 3.522e-05 deg
peri 317.6998993036767 3.8264e-05 deg
M 60.3636513184252 1.4363e-05 deg
tp 2458278.205083497023
(2018-Jun-08.70508350)
7.6885e-05 TDB
period 1922.119808972791
5.26
1.6329e-05
4.471e-08
d
yr
n .1872932157087488 1.5911e-09 deg/d
Q 3.509731197812201 1.9877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      8629 days (23.62 yr)  
   first obs. used      1996-04-19  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:36:42  

Additional Information
 Earth MOID = 1.53202 au 
 Jupiter MOID = 1.83637 au 
 T_jup = 3.216 
[ 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 13.6   n/a MPO458954  
diameter diameter 9.845 km 0.867 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.076 h n/a LCDB (Rev. 2019-January); 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.]
geometric albedo albedo 0.087   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 ]
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