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5557 Chimikeppuko (1989 CM1)
Classification: Main-belt Asteroid          SPK-ID: 2005557
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548264046469572 4.607e-08  
a 2.540289358867075 1.1568e-08 au
q 2.146985490670762 1.1448e-07 au
i 5.914101821873682 4.925e-06 deg
node 10.57546353368711 3.6334e-05 deg
peri 224.2512033163383 4.0157e-05 deg
M 189.9850764181614 2.0588e-05 deg
tp 2459698.905666192171
(2022-Apr-29.40566619)
8.4985e-05 TDB
period 1478.846883157024
4.05
1.0101e-05
2.766e-08
d
yr
n .2434329098570884 1.6628e-09 deg/d
Q 2.933593227063388 1.3359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2147  
   data-arc span      23895 days (65.42 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:40:54  

Additional Information
 Earth MOID = 1.14081 au 
 Jupiter MOID = 2.08093 au 
 T_jup = 3.422 
[ 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 MPO448969  
diameter diameter 7.100 km 0.657 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.168 h n/a LCDB (Rev. 2019-August); 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 0.291   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5557 Chimikeppuko (1989 CM1)          Discovered 1989-Feb-07 by Endate and Watanabe at Kitami
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 CM1 = 1969 EY = 1973 FS = 1983 VW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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