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JPL Small-Body Database Browser
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91035 (1998 EM21)
Classification: Main-belt Asteroid          SPK-ID: 2091035
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09303912686259211 4.3214e-08  
a 2.669396741162364 1.8206e-08 au
q 2.421038399114769 1.149e-07 au
i 12.70735311250191 5.8815e-06 deg
node 3.125795703599967 2.1762e-05 deg
peri 148.0317479001201 3.8495e-05 deg
M 38.38143625111979 3.1767e-05 deg
tp 2458830.661229500447
(2019-Dec-13.16122950)
0.00014019 TDB
period 1593.0085831026
4.36
1.6297e-05
4.462e-08
d
yr
n .225987482941775 2.3119e-09 deg/d
Q 2.917755083209959 1.99e-08 au
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7978 days (21.84 yr)  
   first obs. used      1998-03-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57419  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:00:12  

Additional Information
 Earth MOID = 1.43842 au 
 Jupiter MOID = 2.07213 au 
 T_jup = 3.341 
[ 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 15.1   n/a MPO502689  

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

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