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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4572955887065805 3.9473e-08  
a 3.038043452902271 1.7343e-08 au
q 1.648759583591155 1.1947e-07 au
i 15.88615473821103 4.2872e-06 deg
node 88.61011590792172 1.8091e-05 deg
peri 286.1775136323906 1.8359e-05 deg
M 220.8615212691602 9.6376e-06 deg
tp 2459748.039505065589
(2022-Jun-17.53950507)
5.7145e-05 TDB
period 1934.146644970923
5.30
1.6562e-05
4.534e-08
d
yr
n .1861285962654668 1.5938e-09 deg/d
Q 4.427327322213388 2.5274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      14925 days (40.86 yr)  
   first obs. used      1979-08-14  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:38:52  

Additional Information
 Earth MOID = .732421 au 
 Jupiter MOID = 1.54496 au 
 T_jup = 3.020 
[ 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 12.9   n/a MPO337304  
rotation period rot_per 10.050 h n/a LCDB (Rev. 2019-August); 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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