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 ]  
9042 (1991 EN2)
Classification: Main-belt Asteroid          SPK-ID: 2009042
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08825519770697141 5.4826e-08  
a 2.930226018451211 2.6743e-08 AU
q 2.671618341866688 1.6244e-07 AU
i 1.423093249841702 5.7806e-06 deg
node 206.8006413699951 0.00021609 deg
peri 181.5367620168785 0.00021866 deg
M 28.38036370198739 3.2631e-05 deg
tp 2456856.067288915757
(2014-Jul-17.56728892)
0.00016582 JED
period 1832.103934125633
5.02
2.5081e-05
6.867e-08
d
yr
n .1964954025230065 2.69e-09 deg/d
Q 3.188833695035735 2.9103e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1360  
   data-arc span      8662 days (23.72 yr)  
   first obs. used      1991-02-13  
   last obs. used      2014-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4713  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:08:42  

Additional Information
 Earth MOID = 1.67605 AU 
 T_jup = 3.270 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO267744  

9042 (1991 EN2)          Discovered 1991-Mar-11 by Debehogne, H. at La Silla (809)
Reference: 19980808/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EN2 = 1994 VF7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Dec-20 06:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin