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264281 (1998 DO31)
Classification: Main-belt Asteroid          SPK-ID: 2264281
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1610265135497994 1.1788e-07  
a 2.625607512523998 9.3931e-08 AU
q 2.202815088832097 2.5934e-07 AU
i 11.80316928063971 1.4412e-05 deg
node 345.6623017060598 4.6764e-05 deg
peri 114.7062422273658 0.00019327 deg
M 11.61981297355662 0.00018859 deg
tp 2456950.342050536235
(2014-Oct-19.84205054)
0.0008115 JED
period 1553.971810738071
4.25
8.339e-05
2.283e-07
d
yr
n .2316644340086293 1.2432e-08 deg/d
Q 3.048399936215899 1.0906e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5788 days (15.85 yr)  
   first obs. used      1998-02-23  
   last obs. used      2013-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64991  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 06:51:17  

Additional Information
 Earth MOID = 1.24856 AU 
 T_jup = 3.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9 mag n/a MPO270980  

264281 (1998 DO31)          Discovered 1998-Feb-23 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 1998 DO31 = 2001 YG138 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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