Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3399012540432307 1.4554e-07  
a .7533115212890846 7.6918e-09 AU
q .4972599905177109 1.1071e-07 AU
i 24.92593179012274 8.9704e-06 deg
node 272.7016175427789 3.889e-06 deg
peri 156.610836059851 2.7794e-05 deg
M 194.9031574026817 5.5489e-05 deg
tp 2456910.020800200276
(2014-Sep-09.52080020)
3.7793e-05 JED
period 238.8143071171002
0.65
3.6577e-06
1.001e-08
d
yr
n 1.507447373425067 2.3088e-08 deg/d
Q 1.009363052060458 1.0306e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      137  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      3304 days (9.05 yr)  
   first obs. used      2005-04-01  
   last obs. used      2014-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47101  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-19 05:45:21  

Additional Information
 Earth MOID = .0441537 AU 
 T_jup = 7.556 
[ 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 16.4 mag n/a MPO235360  
rotation period rot_per 11.00 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (E12)
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-25 06:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin