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249199 (2008 DF9)
Classification: Main-belt Asteroid          SPK-ID: 2249199
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085620829561749 4.7965e-08  
a 2.613066598048562 2.6708e-08 au
q 2.329386645261204 1.3066e-07 au
i 3.280236742850969 7.0577e-06 deg
node 173.5495735512853 9.79e-05 deg
peri 102.6245035545238 0.00010437 deg
M 204.4932744945361 3.546e-05 deg
tp 2459666.954984518864
(2022-Mar-28.45498452)
0.00015253 TDB
period 1542.851562509179
4.22
2.3654e-05
6.476e-08
d
yr
n .2333341772778988 3.5773e-09 deg/d
Q 2.896746550835919 2.9607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2000-04-05  
   last obs. used      2018-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50974  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:54:31  

Additional Information
 Earth MOID = 1.31578 au 
 Jupiter MOID = 2.20108 au 
 T_jup = 3.398 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO454846  
diameter diameter 2.837 km 0.421 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249199 (2008 DF9)          Discovered 2008-Feb-25 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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