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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402317987111 7.1454e-08  
a 2.614245067498191 1.4961e-08 AU
q 1.98622027266148 1.8301e-07 AU
i 11.59458345294469 8.4777e-06 deg
node 336.6125115345764 2.7024e-05 deg
peri 156.8282764954286 3.3549e-05 deg
M .9444275707484291 1.6098e-05 deg
tp 2456996.449729498410
(2014-Dec-04.94972950)
6.9025e-05 JED
period 1543.895398370088
4.23
1.3253e-05
3.628e-08
d
yr
n .2331764188040569 2.0017e-09 deg/d
Q 3.242269862334903 1.8555e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      6748 days (18.48 yr)  
   first obs. used      1996-10-04  
   last obs. used      2015-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52344  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 20:03:30  

Additional Information
 Earth MOID = 1.00543 AU 
 T_jup = 3.338 
[ 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
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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