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JPL Small-Body Database Browser
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91309 (1999 FB55)
Classification: Main-belt Asteroid          SPK-ID: 2091309
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174538612928106 6.1229e-08  
a 2.355797911015549 9.3264e-09 au
q 1.843520558839681 1.4645e-07 au
i 10.05270346549678 6.8107e-06 deg
node 334.5312844045878 2.5093e-05 deg
peri 351.7462341451697 2.7018e-05 deg
M 172.8777647631211 9.9181e-06 deg
tp 2458366.276816464881
(2018-Sep-04.77681646)
3.547e-05 TDB
period 1320.703945851508
3.62
7.8428e-06
2.147e-08
d
yr
n .2725819068920056 1.6187e-09 deg/d
Q 2.868075263191418 1.1354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1284  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:02:02  

Additional Information
 Earth MOID = .832733 au 
 Jupiter MOID = 2.48553 au 
 T_jup = 3.502 
[ 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 15.3   n/a MPO453352  
diameter diameter 3.313 km 0.605 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.161   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91309 (1999 FB55)          Discovered 1999-Mar-20 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 FB55 = 2000 MA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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