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186859 (2004 GW56)
Classification: Main-belt Asteroid          SPK-ID: 2186859
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119787064339638 4.5734e-08  
a 2.430582325026073 1.5107e-08 au
q 2.158408860388398 1.136e-07 au
i 7.431500867853262 5.3574e-06 deg
node 17.63494714016804 3.9753e-05 deg
peri 332.4720271781719 4.629e-05 deg
M 350.6064421798088 2.4237e-05 deg
tp 2459236.615326227986
(2021-Jan-22.11532623)
9.3249e-05 TDB
period 1384.088722393197
3.79
1.2904e-05
3.533e-08
d
yr
n .2600989330926214 2.425e-09 deg/d
Q 2.70275578966375 1.6799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      406  
   data-arc span      5978 days (16.37 yr)  
   first obs. used      2004-03-27  
   last obs. used      2020-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56292  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:00  

Additional Information
 Earth MOID = 1.1544 au 
 Jupiter MOID = 2.71629 au 
 T_jup = 3.488 
[ 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 16.28   n/a E2021B55  
rotation period rot_per 54.724 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

186859 (2004 GW56)          Discovered 2004-Apr-14 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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