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6498 Ko (1992 UJ4)
Classification: Main-belt Asteroid          SPK-ID: 2006498
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686500392827254 4.4135e-08  
a 2.280855842291698 1.0286e-08 au
q 1.896189414890969 1.0366e-07 au
i 7.991061094808792 4.5066e-06 deg
node 149.6382050640461 3.5186e-05 deg
peri 156.7931377714378 3.8709e-05 deg
M 337.4434362816016 1.8715e-05 deg
tp 2457479.334373691611
(2016-Mar-31.83437369)
6.5688e-05 JED
period 1258.186968692898
3.44
8.5113e-06
2.33e-08
d
yr
n .2861259963405882 1.9356e-09 deg/d
Q 2.665522269692427 1.2021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1350  
   data-arc span      22175 days (60.71 yr)  
   first obs. used      1954-11-20  
   last obs. used      2015-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46793  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:19:18  

Additional Information
 Earth MOID = .882598 au 
 Jupiter MOID = 2.58726 au 
 T_jup = 3.574 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO337309  
rotation period rot_per 500. h n/a LCDB (Rev. 2015-December); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]

6498 Ko (1992 UJ4)          Discovered 1992-Oct-26 by Endate, K., Watanabe, K. at Kitami
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1992 UJ4 = 1964 PM = 1971 QK3 = 1994 CD4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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