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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767277870548926 6.8383e-08  
a 2.560003023021988 1.6334e-08 au
q 2.107579353909477 1.7471e-07 au
i 17.70332147816369 7.4853e-06 deg
node 147.2289852196082 1.801e-05 deg
peri 173.0008375067757 2.6446e-05 deg
M 187.3054000588169 1.7783e-05 deg
tp 2458318.187531090510
(2018-Jul-18.68753109)
7.3485e-05 JED
period 1496.094905576546
4.10
1.4318e-05
3.92e-08
d
yr
n .2406264459949269 2.3029e-09 deg/d
Q 3.012426692134499 1.922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1145  
   data-arc span      29123 days (79.73 yr)  
   first obs. used      1936-07-16  
   last obs. used      2016-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48145  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:06:34  

Additional Information
 Earth MOID = 1.09552 au 
 Jupiter MOID = 2.33322 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
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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