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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06626780455652399 6.3026e-08  
a 1.900075435879228 8.523e-09 au
q 1.774161608251731 1.1718e-07 au
i 21.92911464916611 6.8455e-06 deg
node 162.3373759808603 1.2814e-05 deg
peri 200.9356568144385 4.1932e-05 deg
M 330.487110828362 4.1508e-05 deg
tp 2459078.926695819961
(2020-Aug-17.42669582)
0.00011045 TDB
period 956.6535601102256
2.62
6.4367e-06
1.762e-08
d
yr
n .3763117757681483 2.532e-09 deg/d
Q 2.025989263506725 9.0878e-09 au
  Orbit Determination Parameters
   # obs. used (total)      527  
   data-arc span      8189 days (22.42 yr)  
   first obs. used      1998-03-01  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:15:00  

Additional Information
 Earth MOID = .772955 au 
 Jupiter MOID = 3.19547 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 16.5   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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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