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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770346951795903 1.1493e-07  
a 2.413153888234614 5.3094e-08 au
q 1.985941925209556 2.7131e-07 au
i 4.33088986914628 2.0369e-05 deg
node 319.3574403315044 0.00011556 deg
peri 255.5718482016087 0.00013048 deg
M 287.0761495215693 5.6641e-05 deg
tp 2457877.859499551250
(2017-May-04.35949955)
0.00021509 JED
period 1369.228574511208
3.75
4.5188e-05
1.237e-07
d
yr
n .2629217697479868 8.6772e-09 deg/d
Q 2.840365851259672 6.2493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      97  
   data-arc span      6481 days (17.74 yr)  
   first obs. used      1998-02-21  
   last obs. used      2015-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67878  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 23:23:44  

Additional Information
 Earth MOID = .984547 au 
 Jupiter MOID = 2.15447 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 MPO310794  

285250 (1998 DH8)          Discovered 1998-Feb-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
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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