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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1610265208967536 9.1544e-08  
a 2.62560751953929 3.4152e-08 AU
q 2.202815075427523 2.2901e-07 AU
i 11.8031716234463 1.2629e-05 deg
node 345.6623087158824 4.2453e-05 deg
peri 114.7062501664339 8.7054e-05 deg
M 11.61979800573636 6.9079e-05 deg
tp 2456950.342114945130
(2014-Oct-19.84211494)
0.00029753 JED
period 1553.971816966096
4.25
3.0319e-05
8.301e-08
d
yr
n .231664433080162 4.52e-09 deg/d
Q 3.048399963651057 3.9651e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      6179 days (16.92 yr)  
   first obs. used      1998-02-23  
   last obs. used      2015-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64619  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 21:18:33  

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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