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308242 (2005 GO21)
Classification: Aten [NEO, PHA]          SPK-ID: 2308242
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3399523155734785 1.2048e-07  
a .7532029203098868 3.8047e-09 au
q .4971498434538346 9.1915e-08 au
i 24.92638586176337 5.9649e-06 deg
node 272.6967628642552 3.047e-06 deg
peri 156.6212457988856 2.2717e-05 deg
M 321.0098651430791 4.8149e-05 deg
tp 2457626.359412635240
(2016-Aug-25.85941264)
3.2047e-05 JED
period 238.7626660653596
0.65
1.8091e-06
4.953e-09
d
yr
n 1.507773413375492 1.1425e-08 deg/d
Q 1.009255997165939 5.0982e-09 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   # delay obs. used      6  
   # Doppler obs. used      2  
   data-arc span      4041 days (11.06 yr)  
   first obs. used      2005-04-01  
   last obs. used      2016-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44304  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 05:50:19  

Additional Information
 Earth MOID = .0440747 au 
 Jupiter MOID = 4.2502 au 
 T_jup = 7.557 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5 mag n/a MPO300358  
rotation period rot_per 11.00 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Benner, L.A.M. http://echo.jpl.nasa.gov/asteroids/2005GO21/2 005GO21_planning.html]
[Higgins, D.J. (2012) http://www.david-higgins.com/Astronomy/astero id/lightcurves.htm]

308242 (2005 GO21)          Discovered 2005-Apr-01 by Siding Spring Survey at Siding Spring
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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