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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822738201650446 4.6411e-08  
a 2.336945934668154 1.4123e-08 AU
q 1.910981871637019 1.0858e-07 AU
i 4.895070406185384 6.2747e-06 deg
node 20.10234853378639 6.5942e-05 deg
peri 240.5826110226661 6.8612e-05 deg
M 175.5492396132065 1.8883e-05 deg
tp 2456364.191277741669
(2013-Mar-12.69127774)
6.731e-05 JED
period 1304.882553280887
3.57
1.1829e-05
3.239e-08
d
yr
n .2758868980927412 2.5009e-09 deg/d
Q 2.762909997699289 1.6697e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1101  
   data-arc span      21880 days (59.90 yr)  
   first obs. used      1955-03-23  
   last obs. used      2015-02-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51757  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:14:07  

Additional Information
 Earth MOID = .903139 AU 
 T_jup = 3.540 
[ 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 14.0 mag n/a PDS3 (MPC 31498)  

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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