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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08825518853767061 5.5119e-08  
a 2.930226038729995 2.9487e-08 AU
q 2.671618387223888 1.6483e-07 AU
i 1.423093322301379 5.8377e-06 deg
node 206.8006389924043 0.0002257 deg
peri 181.536780817881 0.0002284 deg
M 28.380340630402 3.5546e-05 deg
tp 2456856.067404831823
(2014-Jul-17.56740483)
0.00018031 JED
period 1832.103953144391
5.02
2.7655e-05
7.572e-08
d
yr
n .1964954004832213 2.966e-09 deg/d
Q 3.188833690236102 3.2089e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1325  
   data-arc span      8602 days (23.55 yr)  
   first obs. used      1991-02-13  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47095  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:54:24  

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 ]
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