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91907 Shiho (1999 VA26)
Classification: Main-belt Asteroid          SPK-ID: 2091907
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2334653977606526 4.0884e-08  
a 3.067177259206765 1.851e-08 au
q 2.351097500383629 1.2747e-07 au
i 12.82711242484193 4.2557e-06 deg
node 63.00395274119051 2.5033e-05 deg
peri 60.6962135416713 2.7366e-05 deg
M 271.8559114857384 1.2206e-05 deg
tp 2459680.893840810827
(2022-Apr-11.39384081)
6.8984e-05 TDB
period 1962.034954436178
5.37
1.7761e-05
4.863e-08
d
yr
n .1834829696515023 1.661e-09 deg/d
Q 3.7832570180299 2.2832e-08 au
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      8990 days (24.61 yr)  
   first obs. used      1996-05-15  
   last obs. used      2020-12-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56233  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:48:25  

Additional Information
 Earth MOID = 1.39728 au 
 Jupiter MOID = 1.55544 au 
 T_jup = 3.152 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457649.5 (2016-Sep-18.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289684448133072 4.154e-08  
q 2.369152166136069 1.2962e-07 au
tp 2457716.430783335832
(2016-Nov-23.93078334)
6.2694e-05 TDB
node 63.0742834646096 2.5022e-05 deg
peri 60.85305041167422 2.7481e-05 deg
i 12.81936927829109 4.2579e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      8990 days (24.61 yr)  
   first obs. used      1996-05-15  
   last obs. used      2020-12-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56233  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:48:25  

Additional Information
 Jupiter MOID = 1.55544 au 
 T_jup = 3.152 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.725607393795892E-15 -5.351909550756752E-15 1.017266638862901E-12 1.494120182144911E-14 2.217211070644487E-13 -4.065605547395085E-15
q -5.351909550756752E-15 1.680071577251324E-14 -2.835548119003603E-12 -6.291041892463828E-14 -6.205382724756959E-13 1.775177884153391E-14
tp 1.017266638862901E-12 -2.835548119003603E-12 3.930597417608289E-9 8.879601553224215E-12 7.615061674099753E-10 7.202133351952569E-13
node 1.494120182144911E-14 -6.291041892463828E-14 8.879601553224215E-12 6.261227563233534E-10 -6.091102572651551E-10 -3.414223647314187E-11
peri 2.217211070644487E-13 -6.205382724756959E-13 7.615061674099753E-10 -6.091102572651551E-10 7.552279300843579E-10 3.345114340659366E-11
i -4.065605547395085E-15 1.775177884153391E-14 7.202133351952569E-13 -3.414223647314187E-11 3.345114340659366E-11 1.813005944619326E-11

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 14.61   n/a MPCxxxxx  

91907 Shiho           Discovered 1999 Nov. 13 by A. Nakamura at Kuma Kogen.
Shiho Ochi (b. 1984), born in Ehime prefecture, is the vocalist of the band "Superfly". Since their major debut in 2007 with Hello Hello, her rich voice and the band's soulful rock-and-roll music have fascinated many fans in Japan, including the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

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