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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2177085848699704 4.9583e-08  
a 2.355092522579567 8.7826e-09 au
q 1.842368662250921 1.1919e-07 au
i 10.05384980502856 5.3873e-06 deg
node 334.5326479529238 2.2148e-05 deg
peri 351.8115807452033 2.381e-05 deg
M 280.7706319031179 9.9133e-06 deg
tp 2459687.032070156439
(2022-Apr-17.53207016)
3.7136e-05 TDB
period 1320.110809522336
3.61
7.3844e-06
2.022e-08
d
yr
n .2727043801196213 1.5255e-09 deg/d
Q 2.867816382908213 1.0695e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      8120 days (22.23 yr)  
   first obs. used      1999-03-20  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:16  

Additional Information
 Earth MOID = .830849 au 
 Jupiter MOID = 2.48578 au 
 T_jup = 3.502 
[ 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 15.32   n/a MPO637241  
diameter diameter 3.313 km 0.605 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 397.233 h n/a LCDB (Rev. 2020-October); 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:
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
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

Alternate Designations
 1999 FB55 = 2000 MA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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