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4873 Fukaya (1990 EC)
Classification: Main-belt Asteroid          SPK-ID: 2004873
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08896930097613832 3.1857e-08  
a 3.025794434130397 1.5058e-08 au
q 2.756591618428326 9.2887e-08 au
i 10.78688684789072 3.3895e-06 deg
node 145.8935087848303 2.0507e-05 deg
peri 155.2536026984702 2.9841e-05 deg
M 145.9129961040526 2.1942e-05 deg
tp 2458221.299844136208
(2018-Apr-12.79984414)
0.00011668 TDB
period 1922.461080238035
5.26
1.4351e-05
3.929e-08
d
yr
n .1872599678092966 1.3978e-09 deg/d
Q 3.294997249832469 1.6397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2577  
   data-arc span      23593 days (64.59 yr)  
   first obs. used      1955-09-13  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42983  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:13:30  

Additional Information
 Earth MOID = 1.74565 au 
 Jupiter MOID = 1.98699 au 
 T_jup = 3.212 
[ 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 12.1   n/a MPO448962  
diameter diameter 12.437 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.218   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4873 Fukaya (1990 EC)          Discovered 1990-Mar-04 by Sugie, A. at Dynic
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 EC = 1955 RO = 1971 SF = 1982 UM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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