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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402317876813292 7.3447e-08  
a 2.614245097423192 2.8202e-08 AU
q 1.986220324232068 1.9101e-07 AU
i 11.59458516027032 9.2236e-06 deg
node 336.6124809029034 4.0007e-05 deg
peri 156.8283300803306 4.7913e-05 deg
M .9443926214886138 3.2254e-05 deg
tp 2456996.449879312205
(2014-Dec-04.94987931)
0.00013827 JED
period 1543.895424879312
4.23
2.4983e-05
6.84e-08
d
yr
n .2331764148003364 3.7732e-09 deg/d
Q 3.242269870614316 3.4977e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      670  
   data-arc span      6300 days (17.25 yr)  
   first obs. used      1996-10-04  
   last obs. used      2014-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52817  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 17:53:46  

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 (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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