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91022 (1998 DV31)
Classification: Main-belt Asteroid          SPK-ID: 2091022
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2400520207477601 7.2955e-08  
a 2.613378674603293 2.6893e-08 AU
q 1.986031842785669 1.8981e-07 AU
i 11.59364943291719 9.0147e-06 deg
node 336.6191782175809 4.0536e-05 deg
peri 156.8885191194968 4.7857e-05 deg
M 314.2454217646899 3.0813e-05 deg
tp 2456996.625469768654
(2014-Dec-05.12546977)
0.00013453 JED
period 1543.127963142879
4.22
2.3819e-05
6.521e-08
d
yr
n .2332923831324982 3.601e-09 deg/d
Q 3.240725506420916 3.3349e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      5873 days (16.08 yr)  
   first obs. used      1997-12-05  
   last obs. used      2014-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5589  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 13:10:36  

Additional Information
 Earth MOID = 1.00493 AU 
 T_jup = 3.339 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO280376  

91022 (1998 DV31)          Discovered 1998-Feb-19 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 DV31 = 1981 EZ48 = 2000 QH111 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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