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249231 (2008 GH77)
Classification: Main-belt Asteroid          SPK-ID: 2249231
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1487345912516876 5.7813e-08  
a 3.164453207910865 4.1167e-08 au
q 2.693789553497151 1.8939e-07 au
i 9.982267102994733 5.509e-06 deg
node 87.99828818111656 3.3915e-05 deg
peri 277.486720600092 3.8468e-05 deg
M 278.4787963042766 2.2025e-05 deg
tp 2459466.101667532752
(2021-Sep-08.60166753)
0.00013139 TDB
period 2056.11046835639
5.63
4.0123e-05
1.099e-07
d
yr
n .1750878688379891 3.4167e-09 deg/d
Q 3.635116862324579 4.729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      7145 days (19.56 yr)  
   first obs. used      1999-12-06  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56389  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:35  

Additional Information
 Earth MOID = 1.71587 au 
 Jupiter MOID = 1.94395 au 
 T_jup = 3.163 
[ 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 MPO437158  
diameter diameter 4.092 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249231 (2008 GH77)          Discovered 2008-Apr-07 by Spacewatch at Kitt Peak
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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