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285250 (1998 DH8)
Classification: Main-belt Asteroid          SPK-ID: 2285250
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765440614538493 1.5932e-07  
a 2.413919008638434 6.1088e-08 AU
q 1.987755942832756 3.8701e-07 AU
i 4.330884102729249 2.2634e-05 deg
node 319.3631438913031 0.00013694 deg
peri 255.6162555413814 0.0001569 deg
M 76.7149817193244 6.8605e-05 deg
tp 2456508.582484607436
(2013-Aug-04.08248461)
0.00026495 JED
period 1369.879822507355
3.75
5.2001e-05
1.424e-07
d
yr
n .2627967753704666 9.9758e-09 deg/d
Q 2.840082074444113 7.1873e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      5501 days (15.06 yr)  
   first obs. used      1998-02-21  
   last obs. used      2013-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .69353  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-10 06:41:47  

Additional Information
 Earth MOID = .986988 AU 
 T_jup = 3.493 
[ 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 17.5 mag n/a MPO258091  

285250 (1998 DH8)          Discovered 1998-Feb-21 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 1998 DH8 = 2009 BK115 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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