Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
9853 (1991 AN2)
Classification: Main-belt Asteroid          SPK-ID: 2009853
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1773803644155516 7.1398e-08  
a 2.559230904149456 1.8491e-08 AU
q 2.105273593747884 1.8434e-07 AU
i 17.70571348875332 8.0094e-06 deg
node 147.2268470951156 2.1379e-05 deg
peri 173.0154500827588 3.1593e-05 deg
M 42.82184415605106 2.1583e-05 deg
tp 2456822.620663892064
(2014-Jun-14.12066389)
9.0149e-05 JED
period 1495.418104028763
4.09
1.6207e-05
4.437e-08
d
yr
n .2407353495521649 2.6091e-09 deg/d
Q 3.013188214551028 2.1771e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      987  
   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      .46523  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:31:32  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jan-27 20:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin