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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174538647414305 5.7394e-08  
a 2.355797911330018 8.9132e-09 au
q 1.843520550961516 1.3673e-07 au
i 10.05270144584171 6.38e-06 deg
node 334.5312726780489 2.3782e-05 deg
peri 351.746247593968 2.5435e-05 deg
M 172.8777627598069 9.716e-06 deg
tp 2458366.276823687293
(2018-Sep-04.77682369)
3.4407e-05 TDB
period 1320.703946115953
3.62
7.4954e-06
2.052e-08
d
yr
n .2725819068374263 1.547e-09 deg/d
Q 2.86807527169852 1.0851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1388  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:39:26  

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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