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JPL Small-Body Database Browser
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91397 (1999 LL8)
Classification: Main-belt Asteroid          SPK-ID: 2091397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1160176426409982 4.2739e-08  
a 2.601496662662173 2.2925e-08 au
q 2.299677152521684 1.167e-07 au
i 5.366989723655051 5.9659e-06 deg
node 150.1820583298471 4.7284e-05 deg
peri 96.23679426714199 6.5641e-05 deg
M 357.9641272976682 5.5386e-05 deg
tp 2459009.167252621625
(2020-Jun-08.66725262)
0.00023589 TDB
period 1532.615934292648
4.20
2.0259e-05
5.547e-08
d
yr
n .2348925076040995 3.1049e-09 deg/d
Q 2.903316172802663 2.5585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      7211 days (19.74 yr)  
   first obs. used      1999-05-13  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61531  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:07:23  

Additional Information
 Earth MOID = 1.29383 au 
 Jupiter MOID = 2.12916 au 
 T_jup = 3.399 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO426569  

91397 (1999 LL8)          Discovered 1999-Jun-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 LL8 = 2003 FB83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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