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8509 (1991 FV2)
Classification: Main-belt Asteroid          SPK-ID: 2008509
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .181268751619627 4.1586e-08  
a 2.337526604489696 1.103e-08 au
q 1.913806075016183 1.005e-07 au
i 4.896128487035999 6.107e-06 deg
node 20.06973879007563 5.2203e-05 deg
peri 240.5632447327032 5.5388e-05 deg
M 341.0040487364997 1.7519e-05 deg
tp 2457669.379790337123
(2016-Oct-07.87979034)
6.3571e-05 JED
period 1305.368927167637
3.57
9.2397e-06
2.53e-08
d
yr
n .2757841040242321 1.9521e-09 deg/d
Q 2.761247133963208 1.303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1376  
   data-arc span      22306 days (61.07 yr)  
   first obs. used      1955-03-23  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:02:34  

Additional Information
 Earth MOID = .904273 au 
 Jupiter MOID = 2.31415 au 
 T_jup = 3.539 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO332899  
rotation period rot_per 9.0101 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

8509 (1991 FV2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FV2 = 1959 LG = 1978 VQ1 = 1987 AU 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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