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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2399624696524799 7.1436e-08  
a 2.613274524962729 1.5013e-08 au
q 1.986186716072761 1.8265e-07 au
i 11.59521050153326 8.4724e-06 deg
node 336.610997603937 2.6987e-05 deg
peri 156.7686956541644 3.3542e-05 deg
M 94.31088648833372 1.6431e-05 deg
tp 2456996.263704356230
(2014-Dec-04.76370436)
6.9159e-05 JED
period 1543.035717830505
4.22
1.3297e-05
3.641e-08
d
yr
n .2333063297498757 2.0105e-09 deg/d
Q 3.240362333852696 1.8616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      6775 days (18.55 yr)  
   first obs. used      1996-10-04  
   last obs. used      2015-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52161  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 19:07:49  

Additional Information
 Earth MOID = 1.00516 au 
 Jupiter MOID = 1.81901 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 13.8 mag n/a MPO337937  

91022 (1998 DV31)          Discovered 1998-Feb-19 by Ueda, S., Kaneda, H. at Kushiro
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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