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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0885075861607006 5.1511e-08  
a 2.934703926894428 2.0404e-08 au
q 2.674960366228673 1.4674e-07 au
i 1.426284740639023 4.6246e-06 deg
node 206.6155643430164 0.00018128 deg
peri 182.9238435371161 0.00018335 deg
M 144.8790610395508 2.614e-05 deg
tp 2456861.493959030427
(2014-Jul-22.99395903)
0.00013325 JED
period 1836.305210981585
5.03
1.9151e-05
5.243e-08
d
yr
n .1960458413160873 2.0445e-09 deg/d
Q 3.194447487560183 2.221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1847  
   data-arc span      9185 days (25.15 yr)  
   first obs. used      1991-02-13  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45575  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:04:13  

Additional Information
 Earth MOID = 1.67853 au 
 Jupiter MOID = 2.21067 au 
 T_jup = 3.269 
[ 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 12.9 mag n/a MPO324392  

9042 (1991 EN2)          Discovered 1991-Mar-11 by Debehogne, H. at La Silla
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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