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JPL Small-Body Database Browser
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347255 (2011 KW9)
Classification: Main-belt Asteroid          SPK-ID: 2347255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502594594281091 5.1228e-08  
a 2.718226891026012 2.5556e-08 au
q 2.309787587777493 1.443e-07 au
i 4.791582358070173 5.445e-06 deg
node 208.0870782543041 6.6931e-05 deg
peri 88.08282887006567 6.9778e-05 deg
M 316.761062136464 1.8208e-05 deg
tp 2459197.107237129426
(2020-Dec-13.60723713)
8.3244e-05 TDB
period 1636.918223800358
4.48
2.3085e-05
6.32e-08
d
yr
n .2199254640614877 3.1015e-09 deg/d
Q 3.12666619427453 2.9396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      7534 days (20.63 yr)  
   first obs. used      1998-06-27  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62762  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:25:20  

Additional Information
 Earth MOID = 1.30015 au 
 Jupiter MOID = 2.08226 au 
 T_jup = 3.338 
[ 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 16.7   n/a MPO434187  

347255 (2011 KW9)          Discovered 2003-Sep-21 by Spacewatch at Kitt Peak
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ show close-approach data ]
Alternate Designations
 2011 KW9 = 1998 MD37 = 1999 WO21 = 2012 RN35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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