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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548264023728741 4.6014e-08  
a 2.540289358612286 1.1547e-08 au
q 2.14698549623225 1.1436e-07 au
i 5.91410176678272 4.916e-06 deg
node 10.57546168047061 3.6308e-05 deg
peri 224.2512056267447 4.0124e-05 deg
M 189.985076044319 2.0578e-05 deg
tp 2459698.905667622807
(2022-Apr-29.40566762)
8.495e-05 TDB
period 1478.846882934534
4.05
1.0083e-05
2.761e-08
d
yr
n .2434329098937125 1.6598e-09 deg/d
Q 2.933593220992322 1.3335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2183  
   data-arc span      24078 days (65.92 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41402  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:30:24  

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

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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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