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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168091052110705 4.6906e-08  
a 2.282345356674111 1.0862e-08 AU
q 1.898703524390777 1.0886e-07 AU
i 7.985686340471656 4.7793e-06 deg
node 149.6467811005285 4.2028e-05 deg
peri 156.5011172885443 4.5279e-05 deg
M 166.1523164108957 1.8443e-05 deg
tp 2456219.234739506341
(2012-Oct-18.73473951)
6.2985e-05 JED
period 1259.419659610565
3.45
8.9908e-06
2.462e-08
d
yr
n .2858459428141041 2.0406e-09 deg/d
Q 2.665987188957445 1.2688e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      21669 days (59.33 yr)  
   first obs. used      1954-11-20  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46575  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:34:36  

Additional Information
 Earth MOID = .886122 AU 
 T_jup = 3.573 
[ 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 13.4 mag n/a PDS3 (MPC 28115)  
rotation period rot_per 500. h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (400)
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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