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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402317876804769 7.3392e-08  
a 2.614245097303832 2.7497e-08 AU
q 1.98622032414361 1.9099e-07 AU
i 11.59458544762923 9.1859e-06 deg
node 336.6124820495508 3.9876e-05 deg
peri 156.8283288633554 4.7511e-05 deg
M .9443927548093329 3.1317e-05 deg
tp 2456996.449878740724
(2014-Dec-04.94987874)
0.00013425 JED
period 1543.895424773576
4.23
2.4358e-05
6.669e-08
d
yr
n .2331764148163058 3.6789e-09 deg/d
Q 3.242269870464054 3.4102e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      6574 days (18.00 yr)  
   first obs. used      1996-10-04  
   last obs. used      2014-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53355  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 16:51:11  

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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