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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1546222336628331 4.0064e-08  
a 2.54070794998331 1.0451e-08 au
q 2.147858011671973 1.0119e-07 au
i 5.913779414115449 4.2157e-06 deg
node 10.56755534569357 3.6105e-05 deg
peri 224.2518135210759 3.9786e-05 deg
M 238.6626282133914 2.0569e-05 deg
tp 2459699.065967155724
(2022-Apr-29.56596716)
8.4927e-05 TDB
period 1479.212426751025
4.05
9.127e-06
2.499e-08
d
yr
n .2433727526145193 1.5016e-09 deg/d
Q 2.933557888294647 1.2067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2469  
   data-arc span      24246 days (66.38 yr)  
   first obs. used      1954-09-04  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40004  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:25:32  

Additional Information
 Earth MOID = 1.14039 au 
 Jupiter MOID = 2.07979 au 
 T_jup = 3.421 
[ 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 12.95   n/a E2021B10  
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. 2020-October); 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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