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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769575284914331 1.1489e-07  
a 2.41306572671304 5.3394e-08 au
q 1.986055579626517 2.7103e-07 au
i 4.330917877678165 2.0369e-05 deg
node 319.3579303809137 0.00011556 deg
peri 255.5868244882329 0.00013052 deg
M 234.4644564297341 5.6838e-05 deg
tp 2457877.937316545671
(2017-May-04.43731655)
0.00021528 JED
period 1369.153540648325
3.75
4.5443e-05
1.244e-07
d
yr
n .2629361786768867 8.727e-09 deg/d
Q 2.840075873799564 6.2842e-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 = .984513 au 
 Jupiter MOID = 2.1542 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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