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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168946990674966 3.1117e-08  
a 2.281464459361502 6.5945e-09 au
q 1.896017904620488 7.1077e-08 au
i 7.990173004603252 3.6933e-06 deg
node 149.6113163543572 2.6466e-05 deg
peri 156.564749399489 2.8728e-05 deg
M 321.0320925072376 1.1913e-05 deg
tp 2458736.745941157969
(2019-Sep-10.24594116)
4.1771e-05 TDB
period 1258.690598821064
3.45
5.4573e-06
1.494e-08
d
yr
n .2860115109600319 1.2401e-09 deg/d
Q 2.666911014102516 7.7086e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2039  
   data-arc span      23662 days (64.78 yr)  
   first obs. used      1954-11-20  
   last obs. used      2019-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45896  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:54:44  

Additional Information
 Earth MOID = .883551 au 
 Jupiter MOID = 2.59355 au 
 T_jup = 3.573 
[ 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 13.4   n/a MPO452259  
rotation period rot_per 500. h n/a LCDB (Rev. 2019-January); 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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