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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683881132300471 4.4459e-08  
a 2.281579605308204 1.0469e-08 AU
q 1.8973887203862 1.0426e-07 AU
i 7.990289643477642 4.5742e-06 deg
node 149.6368613162927 3.5673e-05 deg
peri 156.6811889647913 3.9161e-05 deg
M 223.1100151896886 1.8349e-05 deg
tp 2457479.153281390799
(2016-Mar-31.65328139)
6.5808e-05 JED
period 1258.785889555507
3.45
8.6639e-06
2.372e-08
d
yr
n .285989859742645 1.9684e-09 deg/d
Q 2.665770490230208 1.2232e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1305  
   data-arc span      22042 days (60.35 yr)  
   first obs. used      1954-11-20  
   last obs. used      2015-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46487  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:25:20  

Additional Information
 Earth MOID = .886707 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 LCDB (Rev. 2015-Feb); 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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