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344075 (1997 WK9)
Classification: Main-belt Asteroid          SPK-ID: 2344075
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2314070559857793 1.8497e-07  
a 2.416370538752539 1.9633e-08 au
q 1.857205346209043 4.4304e-07 au
i 6.616252881010072 1.4018e-05 deg
node 50.19259120233475 7.2027e-05 deg
peri 331.7765391835312 7.5726e-05 deg
M 15.35827507069377 2.0824e-05 deg
tp 2458941.969307052302
(2020-Apr-02.46930705)
7.8947e-05 TDB
period 1371.967187993562
3.76
1.6721e-05
4.578e-08
d
yr
n .2623969458967041 3.198e-09 deg/d
Q 2.975535731296035 2.4177e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      7008 days (19.19 yr)  
   first obs. used      1997-10-31  
   last obs. used      2017-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .76737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:00:12  

Additional Information
 Earth MOID = .863872 au 
 Jupiter MOID = 2.48363 au 
 T_jup = 3.470 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO288286  

344075 (1997 WK9)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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