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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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08834145271344049 5.5127e-08  
a 2.930457879398051 3.0059e-08 AU
q 2.671576973216479 1.6506e-07 AU
i 1.423012781463512 5.8396e-06 deg
node 206.7999689743364 0.00022699 deg
peri 181.4856570504238 0.00022973 deg
M 349.1253627892498 3.5774e-05 deg
tp 2456855.849528884985
(2014-Jul-17.34952888)
0.00018232 JED
period 1832.321392652695
5.02
2.8193e-05
7.719e-08
d
yr
n .1964720825961757 3.023e-09 deg/d
Q 3.189338785579623 3.2715e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1317  
   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      .47207  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:25:54  

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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