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91034 (1998 EH21)
Classification: Inner Main-belt Asteroid          SPK-ID: 2091034
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06625104627818415 8.6425e-08  
a 1.900324404819544 1.365e-08 au
q 1.774425924732281 1.5857e-07 au
i 21.92931316563515 8.9647e-06 deg
node 162.3704242490496 1.8695e-05 deg
peri 200.9582078738226 6.1432e-05 deg
M 163.6233099539715 5.7599e-05 deg
tp 2457165.606698342385
(2015-May-23.10669834)
0.00015318 JED
period 956.8415932961113
2.62
1.031e-05
2.823e-08
d
yr
n .3762378250718368 4.0538e-09 deg/d
Q 2.026222884906806 1.4555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      6571 days (17.99 yr)  
   first obs. used      1998-03-01  
   last obs. used      2016-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58595  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 19:06:55  

Additional Information
 Earth MOID = .772315 au 
 Jupiter MOID = 3.19915 au 
 T_jup = 3.857 
[ 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 16.5 mag n/a MPO309817  

91034 (1998 EH21)          Discovered 1998-Mar-01 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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