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JPL Small-Body Database Browser
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85947 (1999 ET11)
Classification: Main-belt Asteroid          SPK-ID: 2085947
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2066581851851431 8.3891e-08  
a 2.651737110756881 2.0351e-08 au
q 2.103733931859769 2.2866e-07 au
i 28.62183385205168 7.9163e-06 deg
node 76.64514188019841 1.3056e-05 deg
peri 90.44606562556388 2.4706e-05 deg
M 231.6277816562998 1.9517e-05 deg
tp 2459162.922481266470
(2020-Nov-09.42248127)
8.8395e-05 TDB
period 1577.226722949012
4.32
1.8157e-05
4.971e-08
d
yr
n .2282487322601862 2.6276e-09 deg/d
Q 3.199740289653993 2.4557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      9341 days (25.57 yr)  
   first obs. used      1994-04-05  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5512  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:16:07  

Additional Information
 Earth MOID = 1.30714 au 
 Jupiter MOID = 2.32137 au 
 T_jup = 3.188 
[ 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 14.3   n/a MPO267963  
diameter diameter 7.591 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.064   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85947 (1999 ET11)          Discovered 1999-Mar-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 ET11 = 2002 TP266 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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