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6499 Michiko (1992 UV6)
Classification: Main-belt Asteroid          SPK-ID: 2006499
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414137974485324 2.4334e-08  
a 2.763288441560809 1.1532e-08 au
q 2.372521329594058 6.6124e-08 au
i 10.06005947408559 1.2164e-06 deg
node 65.75761642999741 4.0672e-06 deg
peri 221.2790463265502 7.4369e-06 deg
M 197.0090657839325 6.0651e-06 deg
tp 2460156.124049206200
(2023-Jul-30.62404921)
3.1665e-05 TDB
period 1677.790602462074
4.59
1.0503e-05
2.876e-08
d
yr
n .2145678962986907 1.3432e-09 deg/d
Q 3.15405555352756 1.3163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2740  
   data-arc span      25400 days (69.54 yr)  
   first obs. used      1951-11-08  
   last obs. used      2021-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44823  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 00:36:38  

Additional Information
 Earth MOID = 1.36643 au 
 Jupiter MOID = 2.00422 au 
 T_jup = 3.304 
[ 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 12.46   n/a E2021B10  
diameter diameter 8.922 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.004 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 0.293   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6499 Michiko           Discovered 1992 Oct. 27 by M. Hirasawa and S. Suzuki at Nyukasa.
Named in honor of Michiko Hirasawa (b. 1955), wife of the first discoverer. She is manager of Mt. Nyukasa station, where this minor planet was discovered.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980610/MPCPages.arcLast Updated: 2009-11-17

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1965-Sep-16 07:17 < 00:01 Jupiter 1.99961073240806 1.9996105021108 1.99961096270544 3.37368725337443 3.24570150832623 2439019.803424742 0.86502201153791 43.2895223975366 5.09929146596566 -77.9125124115854 6584938.06417287 T 43 CATAB v2.0g-lin.ifort 2021-Jul-08 00:37:28 2021-Jul-08 00:37

Alternate Designations
 1992 UV6 = 1985 BB1 = 1987 SU29 = 1987 UJ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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