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9853 (1991 AN2)
Classification: Main-belt Asteroid          SPK-ID: 2009853
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1773803644171941 7.1394e-08  
a 2.559230904122424 1.8489e-08 AU
q 2.105273593721444 1.8433e-07 AU
i 17.70571350899108 8.0077e-06 deg
node 147.226847065573 2.1378e-05 deg
peri 173.0154501204734 3.1591e-05 deg
M 42.82184415396998 2.1581e-05 deg
tp 2456822.620663903527
(2014-Jun-14.12066390)
9.0142e-05 JED
period 1495.418104005071
4.09
1.6205e-05
4.437e-08
d
yr
n .240735349555979 2.6088e-09 deg/d
Q 3.013188214523405 2.1769e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      993  
   data-arc span      28639 days (78.41 yr)  
   first obs. used      1936-07-16  
   last obs. used      2014-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46386  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:27:23  

Additional Information
 Earth MOID = 1.09458 AU 
 T_jup = 3.348 
[ 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 12.8 mag n/a MPO319208  

9853 (1991 AN2)          Discovered 1991-Jan-07 by McNaught, R. H. at Siding Spring (413)
Reference: 19990106/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 AN2 = 1936 OD = 1977 QK4 = 1981 LL = 1992 EY3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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