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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09405292415584626 1.0532e-07  
a 2.66954522387948 3.2512e-08 AU
q 2.418466689407341 2.9415e-07 AU
i 12.704230635776 9.5229e-06 deg
node 3.161610136068822 3.4666e-05 deg
peri 148.6722013188052 5.7711e-05 deg
M 305.9090870014458 4.4948e-05 deg
tp 2457239.873550660448
(2015-Aug-05.37355066)
0.00019985 JED
period 1593.141499387606
4.36
2.9104e-05
7.968e-08
d
yr
n .2259686287366074 4.1281e-09 deg/d
Q 2.920623758351618 3.557e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      6146 days (16.83 yr)  
   first obs. used      1998-03-05  
   last obs. used      2015-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61139  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 06:09:11  

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 15.0 mag n/a MPO320097  

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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