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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150047620338324 4.9469e-08  
a 2.31951672077528 1.5496e-08 AU
q 1.820809580191495 1.1405e-07 AU
i 8.527100160041805 7.8887e-06 deg
node 177.979897507599 3.7015e-05 deg
peri 260.4717370101392 4.2034e-05 deg
M 334.4310330531888 1.9442e-05 deg
tp 2457092.144281196309
(2015-Mar-10.64428120)
7.004e-05 JED
period 1290.311857311306
3.53
1.293e-05
3.54e-08
d
yr
n .2790023186721324 2.7958e-09 deg/d
Q 2.818223861359065 1.8827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      8578 days (23.49 yr)  
   first obs. used      1991-03-13  
   last obs. used      2014-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57422  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:39:26  

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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