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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08696623003393063 4.0987e-08  
a 2.779247612650702 1.1281e-08 au
q 2.537546925447668 1.1237e-07 au
i 4.237959285186113 4.0893e-06 deg
node 188.0702471303689 4.6313e-05 deg
peri 191.7721943734678 5.0464e-05 deg
M 148.6792356182015 2.0841e-05 deg
tp 2458301.564486860876
(2018-Jul-02.06448686)
9.7196e-05 TDB
period 1692.346504768293
4.63
1.0304e-05
2.821e-08
d
yr
n .2127223940166375 1.2952e-09 deg/d
Q 3.020948299853735 1.2262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2407  
   data-arc span      14034 days (38.42 yr)  
   first obs. used      1981-11-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:23:08  

Additional Information
 Earth MOID = 1.53977 au 
 Jupiter MOID = 2.41237 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456838.5 (2014-Jun-30.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08403863479536576 4.0685e-08  
q 2.546430135730184 1.1106e-07 au
tp 2456605.076164356199
(2013-Nov-08.57616436)
0.00010031 TDB
node 188.1968287169182 4.6472e-05 deg
peri 191.1727519996189 5.0941e-05 deg
i 4.228124611774818 4.0832e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2407  
   data-arc span      14034 days (38.42 yr)  
   first obs. used      1981-11-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:23:08  

Additional Information
 Jupiter MOID = 2.41237 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.65524111499687E-15 -4.499616088469173E-15 3.259714420922665E-13 1.02169497306715E-14 6.588569220392789E-15 -1.308109664364397E-16
q -4.499616088469173E-15 1.233379390867518E-14 -8.422537039245628E-13 -2.687520740390168E-14 -7.175765135101719E-15 4.929023534089864E-16
tp 3.259714420922665E-13 -8.422537039245628E-13 1.006139967188274E-8 -2.029084010900539E-13 2.099386315897692E-9 -1.738963291245313E-12
node 1.02169497306715E-14 -2.687520740390168E-14 -2.029084010900539E-13 2.159650023666095E-9 -2.153940007436902E-9 1.411750323485335E-12
peri 6.588569220392789E-15 -7.175765135101719E-15 2.099386315897692E-9 -2.153940007436902E-9 2.595000186319098E-9 -1.774181110160447E-12
i -1.308109664364397E-16 4.929023534089864E-16 -1.738963291245313E-12 1.411750323485335E-12 -1.774181110160447E-12 1.667247349889778E-11

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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