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5591 Koyo (1990 VF2)
Classification: Main-belt Asteroid          SPK-ID: 2005591
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08670898024838308 4.246e-08  
a 2.780093784815727 1.1883e-08 au
q 2.539034687739488 1.1751e-07 au
i 4.237355036850682 4.3859e-06 deg
node 188.0814353484642 5.1133e-05 deg
peri 191.9310788447095 5.5452e-05 deg
M 63.45625122440544 2.1672e-05 deg
tp 2458302.058297882020
(2018-Jul-02.55829788)
0.00010181 TDB
period 1693.119443544302
4.64
1.0855e-05
2.972e-08
d
yr
n .2126252825059948 1.3632e-09 deg/d
Q 3.021152881891966 1.2913e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2163  
   data-arc span      13891 days (38.03 yr)  
   first obs. used      1981-11-25  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5027  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:01:28  

Additional Information
 Earth MOID = 1.54052 au 
 Jupiter MOID = 2.41216 au 
 T_jup = 3.324 
[ 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 13.3   n/a MPO502207  
diameter diameter 17.075 km 0.218 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Cb   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)

5591 Koyo (1990 VF2)          Discovered 1990-Nov-10 by Urata, T. at Oohira
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1990 VF2 = 1981 WG8 = 1985 PW1 = 1987 BG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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