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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08834149158831271 5.8348e-08  
a 2.930457862161999 2.9356e-08 AU
q 2.67157684358191 1.7437e-07 AU
i 1.42301253614796 6.0334e-06 deg
node 206.7998295881493 0.00023322 deg
peri 181.4858265281225 0.00023611 deg
M 349.125341686239 3.7148e-05 deg
tp 2456855.849635806378
(2014-Jul-17.34963581)
0.00018931 JED
period 1832.321376486969
5.02
2.7533e-05
7.538e-08
d
yr
n .1964720843295583 2.9523e-09 deg/d
Q 3.189338880742088 3.195e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1318  
   data-arc span      8310 days (22.75 yr)  
   first obs. used      1991-02-13  
   last obs. used      2013-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50192  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Nov-21 04:01:09  

Additional Information
 Earth MOID = 1.67484 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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