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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402317819261021 7.3251e-08  
a 2.614245080529875 1.9104e-08 AU
q 1.986220326442637 1.8986e-07 AU
i 11.59458514424031 8.6835e-06 deg
node 336.6124839946302 3.6001e-05 deg
peri 156.8283119962846 4.163e-05 deg
M .9444133305437351 2.0493e-05 deg
tp 2456996.449790538644
(2014-Dec-04.94979054)
8.7862e-05 JED
period 1543.895409914275
4.23
1.6923e-05
4.633e-08
d
yr
n .2331764170605242 2.5559e-09 deg/d
Q 3.242269834617113 2.3693e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      6661 days (18.24 yr)  
   first obs. used      1996-10-04  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53273  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 06:09:09  

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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