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7769 Okuni (1991 VF4)
Classification: Main-belt Asteroid          SPK-ID: 2007769
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470291173097029 3.5288e-08  
a 2.433797721560868 8.6488e-09 au
q 2.075958590849407 8.786e-08 au
i 7.143790532648975 3.392e-06 deg
node 88.01713867539677 3.1568e-05 deg
peri 264.7443700802334 3.3979e-05 deg
M 226.3052787984427 1.4705e-05 deg
tp 2459515.535193457443
(2021-Oct-28.03519346)
5.8072e-05 TDB
period 1386.836129192808
3.80
7.3925e-06
2.024e-08
d
yr
n .2595836612718865 1.3837e-09 deg/d
Q 2.791636852272328 9.9204e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2307  
   data-arc span      18927 days (51.82 yr)  
   first obs. used      1968-10-23  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4551  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:25:44  

Additional Information
 Earth MOID = 1.08519 au 
 Jupiter MOID = 2.65173 au 
 T_jup = 3.480 
[ 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 13.4   n/a MPO502226  
diameter diameter 5.867 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.295   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

7769 Okuni           Discovered 1991 Nov. 4 by S. Otomo at Kiyosato.
Tomimaru Okuni (b. 1931), a retired teacher, is a Japanese amateur astronomer. He has been discovering new minor planets since 1995 at Nanyo in Yamagata prefecture.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1991 VF4 = 1968 UY1 = 1972 XH = 1976 YO5 = 1980 XW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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