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9191 Hokuto (1991 XU)
Classification: Main-belt Asteroid          SPK-ID: 2009191
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1114517956612266 6.0898e-08  
a 2.600772019951436 2.1087e-08 AU
q 2.310911308222373 1.6362e-07 AU
i 11.92551878505411 8.9656e-06 deg
node 288.0751762690812 2.7292e-05 deg
peri 254.1093588538873 4.9272e-05 deg
M 58.15468238186151 4.1666e-05 deg
tp 2456553.023457103480
(2013-Sep-17.52345710)
0.00017707 JED
period 1531.975617332836
4.19
1.8632e-05
5.101e-08
d
yr
n .2349906851825479 2.8579e-09 deg/d
Q 2.890632731680499 2.3437e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      8204 days (22.46 yr)  
   first obs. used      1991-12-13  
   last obs. used      2014-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49335  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:41:45  

Additional Information
 Earth MOID = 1.34894 AU 
 T_jup = 3.376 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4 mag n/a MPO259407  

9191 Hokuto           Discovered 1991 Dec. 13 by S. Otomo at Kiyosato.
Hokuto-shi is the largest city in Yamanashi-ken in Japan. The city, home to the discoverer, is famous for its beautiful starlit sky.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 1991 XU = 1995 WV41 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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