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91035 (1998 EM21)
Classification: Main-belt Asteroid          SPK-ID: 2091035
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09405300408342616 1.21e-07  
a 2.669545255987727 4.0876e-08 AU
q 2.418466505125422 3.2433e-07 AU
i 12.70423809303792 1.3982e-05 deg
node 3.161606823736755 3.4883e-05 deg
peri 148.672243634002 6.5296e-05 deg
M 305.9090386533807 5.8252e-05 deg
tp 2457239.873768938280
(2015-Aug-05.37376894)
0.00026064 JED
period 1593.141528130131
4.36
3.6591e-05
1.002e-07
d
yr
n .225968624659814 5.19e-09 deg/d
Q 2.920624006850032 4.4721e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      6057 days (16.58 yr)  
   first obs. used      1998-03-05  
   last obs. used      2014-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62002  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 15:34:37  

Additional Information
 Earth MOID = 1.43619 AU 
 T_jup = 3.340 
[ 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 14.9 mag n/a MPO267973  

91035 (1998 EM21)          Discovered 1998-Mar-05 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 EM21 = 2000 SV35 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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