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11959 Okunokeno (1994 GG1)
Classification: Main-belt Asteroid          SPK-ID: 2011959
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534449437300493 4.6361e-08  
a 2.646995747175798 1.8626e-08 au
q 2.240827633696728 1.2681e-07 au
i 13.29392281451548 4.9116e-06 deg
node 142.351009741744 1.9388e-05 deg
peri 69.87344948781362 2.6629e-05 deg
M 287.5634753551004 2.2372e-05 deg
tp 2458917.007056481747
(2020-Mar-08.50705648)
9.9441e-05 TDB
period 1572.99844093848
4.31
1.6603e-05
4.546e-08
d
yr
n .228862273878172 2.4157e-09 deg/d
Q 3.053163860654868 2.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1259  
   data-arc span      12414 days (33.99 yr)  
   first obs. used      1985-02-13  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:14:58  

Additional Information
 Earth MOID = 1.27741 au 
 Jupiter MOID = 2.02526 au 
 T_jup = 3.338 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO431638  
diameter diameter 6.663 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.144   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11959 Okunokeno           Discovered 1994 Apr. 13 by K. Endate and K. Watanabe at Kitami.
Keno Okuno (b. 1932), an amateur astronomer and a member of the Kawasaki Astronomical Association, has greatly contributed to the popularization of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1994 GG1 = 1985 CD1 = 1998 HX6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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