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136842 (1997 XN9)
Classification: Main-belt Asteroid          SPK-ID: 2136842
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05221723422248768 4.208e-08  
a 2.652648447319291 1.6778e-08 au
q 2.514134482035701 1.0972e-07 au
i 22.83563918202641 4.6271e-06 deg
node 80.45317705469353 1.2169e-05 deg
peri 23.23756985083834 9.9044e-05 deg
M 44.18983969132388 9.0669e-05 deg
tp 2458806.796308217458
(2019-Nov-19.29630822)
0.00039828 TDB
period 1578.039873618422
4.32
1.4972e-05
4.099e-08
d
yr
n .228131117608914 2.1644e-09 deg/d
Q 2.791162412602881 1.7654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      10092 days (27.63 yr)  
   first obs. used      1992-09-04  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:41:25  

Additional Information
 Earth MOID = 1.53729 au 
 Jupiter MOID = 2.46883 au 
 T_jup = 3.276 
[ 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 15.1   n/a MPO366746  

136842 (1997 XN9)          Discovered 1997-Dec-06 by Tucker, R. A. at Goodricke-Pigott
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1997 XN9 = 2001 VW87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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