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249228 (2008 GH4)
Classification: Main-belt Asteroid          SPK-ID: 2249228
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2755765848790779 3.8951e-08  
a 2.558232627157938 2.4309e-08 au
q 1.853243616439522 9.8438e-08 au
i 13.22816347885998 4.1019e-06 deg
node 287.2093763780097 3.1527e-05 deg
peri 14.40479597218918 3.7247e-05 deg
M 286.0297835213423 2.2371e-05 deg
tp 2459307.588014241416
(2021-Apr-03.08801424)
9.4582e-05 TDB
period 1494.543214684341
4.09
2.1302e-05
5.832e-08
d
yr
n .2408762734077481 3.4333e-09 deg/d
Q 3.263221637876354 3.1008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      6759 days (18.51 yr)  
   first obs. used      2001-10-25  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:41:44  

Additional Information
 Earth MOID = .84031 au 
 Jupiter MOID = 1.98686 au 
 T_jup = 3.346 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO470659  
diameter diameter 5.039 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249228 (2008 GH4)          Discovered 2008-Apr-07 by Tozzi, F. at Grove Creek
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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