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91034 (1998 EH21)
Classification: Inner Main-belt Asteroid          SPK-ID: 2091034
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06623610010530713 6.1777e-08  
a 1.900182244953175 6.7424e-09 au
q 1.774321583558129 1.1481e-07 au
i 21.93006556892669 5.1178e-06 deg
node 162.3343423588181 1.0981e-05 deg
peri 201.12146341 3.4446e-05 deg
M 119.3350852204246 3.0455e-05 deg
tp 2459079.355665609960
(2020-Aug-17.85566561)
8.1299e-05 TDB
period 956.7342258944781
2.62
5.0922e-06
1.394e-08
d
yr
n .3762800475371577 2.0027e-09 deg/d
Q 2.02604290634822 7.189e-09 au
  Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      8355 days (22.87 yr)  
   first obs. used      1998-03-01  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51731  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:43:11  

Additional Information
 Earth MOID = .772398 au 
 Jupiter MOID = 3.19362 au 
 T_jup = 3.857 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.54   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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