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46580 Ryouichiirie (1992 GC)
Classification: Main-belt Asteroid          SPK-ID: 2046580
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1337672368416983 3.3678e-08  
a 2.65852965294909 1.2714e-08 au
q 2.302905487212372 8.7007e-08 au
i 13.64432361855121 5.5367e-06 deg
node 27.01826684785102 1.5264e-05 deg
peri 230.708548191901 2.6944e-05 deg
M 128.6185626334128 2.1644e-05 deg
tp 2458434.831700678275
(2018-Nov-12.33170068)
9.5462e-05 TDB
period 1583.290806446308
4.33
1.1357e-05
3.109e-08
d
yr
n .2273745281247601 1.631e-09 deg/d
Q 3.014153818685809 1.4414e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1438  
   data-arc span      16282 days (44.58 yr)  
   first obs. used      1975-06-08  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:43  

Additional Information
 Earth MOID = 1.31485 au 
 Jupiter MOID = 2.07615 au 
 T_jup = 3.334 
[ 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 13.9   n/a MPO436107  
diameter diameter 4.282 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.167   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46580 Ryouichiirie           Discovered 1992 Apr. 2 by T. Seki at Geisei.
Ryouichi Irie (b. 1949) is a Japanese amateur astronomer in Toyooka city, Hyogo prefecture, and an independent discoverer of C/1988 P1 (Machholz). He is also an award-winning astro-photographer and exhibits his works widely. The name was suggested by M. Sugano.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-07-22Last Updated: 2014-08-13

Alternate Designations
 1992 GC = 1975 LZ = 1989 SL6 = 1998 VT21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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