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6042 Cheshirecat (1990 WW2)
Classification: Mars-crossing Asteroid          SPK-ID: 2006042
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4575447214027581 2.5297e-08  
a 3.038395365229094 1.3308e-08 au
q 1.648193604333917 8.0304e-08 au
i 15.88654313858942 1.6066e-06 deg
node 88.60788220563732 4.5163e-06 deg
peri 286.1595825228684 4.4057e-06 deg
M 294.6277261051634 5.7116e-06 deg
tp 2459747.782039137687
(2022-Jun-17.28203914)
3.25e-05 TDB
period 1934.482718055735
5.30
1.2709e-05
3.48e-08
d
yr
n .18609626058682 1.2226e-09 deg/d
Q 4.428597126124272 1.9397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      15292 days (41.87 yr)  
   first obs. used      1979-08-14  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5045  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 00:19:41  

Additional Information
 Earth MOID = .731295 au 
 Jupiter MOID = 1.5461 au 
 T_jup = 3.020 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457147.5 (2015-May-05.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4570342249054645 2.5353e-08  
q 1.649986627154474 8.0573e-08 au
tp 2457814.410279632840
(2017-Mar-01.91027963)
2.3586e-05 TDB
node 88.60815544714075 4.5149e-06 deg
peri 286.3307610355558 4.4059e-06 deg
i 15.88650769626263 1.6067e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      15292 days (41.87 yr)  
   first obs. used      1979-08-14  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5045  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 00:19:41  

Additional Information
 Jupiter MOID = 1.5461 au 
 T_jup = 3.020 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.427736028949151E-16 -2.035971384498013E-15 -3.56266208562283E-13 -4.731355655807421E-16 2.650726984167228E-15 -8.939657277304624E-16
q -2.035971384498013E-15 6.491982344291847E-15 1.177992067529402E-12 6.217987764877608E-15 -9.055856718275067E-15 2.008054493263599E-15
tp -3.56266208562283E-13 1.177992067529402E-12 5.562972104282058E-10 3.173447504540928E-11 1.340013602119306E-11 -5.557522696955525E-12
node -4.731355655807421E-16 6.217987764877608E-15 3.173447504540928E-11 2.038446620629357E-11 -1.62636875947904E-11 -4.214863386807092E-12
peri 2.650726984167228E-15 -9.055856718275067E-15 1.340013602119306E-11 -1.62636875947904E-11 1.941164430719225E-11 3.373264997506499E-12
i -8.939657277304624E-16 2.008054493263599E-15 -5.557522696955525E-12 -4.214863386807092E-12 3.373264997506499E-12 2.581439729472624E-12

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 12.94   n/a MPO614063  
rotation period rot_per 10.050 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.]
[Stephens, R.D. (2012) Minor Planet Bull. 39, 80-82.]

6042 Cheshirecat           Discovered 1990 Nov. 23 by A. Natori and T. Urata at the JCPM Yakiimo Station.
Named for a cat appearing in Lewis Carroll's famous fairy tale Alice in Wonderland . Its unique characteristic is its laughing voice that lingers after the cat fades away. Name and citation proposed by T. Urata.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

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