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39816 (1997 XE11)
Classification: Main-belt Asteroid          SPK-ID: 2039816
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150047721299762 5.2043e-08  
a 2.31951672500285 1.6759e-08 AU
q 1.820809560091944 1.1859e-07 AU
i 8.527100653570745 7.8959e-06 deg
node 177.9798814157272 3.8177e-05 deg
peri 260.471754247017 4.3111e-05 deg
M 334.431029377548 2.012e-05 deg
tp 2457092.144294621087
(2015-Mar-10.64429462)
7.2556e-05 JED
period 1290.311860838905
3.53
1.3985e-05
3.829e-08
d
yr
n .2790023179093645 3.0239e-09 deg/d
Q 2.818223889913756 2.0363e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      8536 days (23.37 yr)  
   first obs. used      1991-03-13  
   last obs. used      2014-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57346  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 15:02:06  

Additional Information
 Earth MOID = .858393 AU 
 T_jup = 3.533 
[ 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 14.5 mag n/a MPO263678  

39816 (1997 XE11)          Discovered 1997-Dec-10 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 XE11 = 1991 EQ7 = 2000 RM7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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