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4584 Akan (1990 FA)
Classification: Main-belt Asteroid          SPK-ID: 2004584
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .199995048254878 3.1371e-08  
a 2.790816217482794 1.2579e-08 au
q 2.232666793396827 8.9077e-08 au
i 7.668675690915145 4.2388e-06 deg
node 25.17738828297034 3.1427e-05 deg
peri 66.07869165373653 3.3762e-05 deg
M 272.9129457316097 1.3934e-05 deg
tp 2459612.451780099232
(2022-Feb-01.95178010)
6.7302e-05 TDB
period 1702.924069272974
4.66
1.1513e-05
3.152e-08
d
yr
n .2114010873976865 1.4292e-09 deg/d
Q 3.348965641568762 1.5094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1855  
   data-arc span      18240 days (49.94 yr)  
   first obs. used      1971-01-25  
   last obs. used      2021-01-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47728  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:31:57  

Additional Information
 Earth MOID = 1.26176 au 
 Jupiter MOID = 1.93126 au 
 T_jup = 3.287 
[ 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 13.18   n/a E2021B10  
diameter diameter 14.551 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.091   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4584 Akan (1990 FA)          Discovered 1990-Mar-16 by Matsuyama and Watanabe at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 FA = 1951 WA1 = 1971 BR = 1979 VB2 = 1979 YG1 = 1985 BK2 = 1988 UR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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