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JPL Small-Body Database Browser
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91055 (1998 FD49)
Classification: Main-belt Asteroid          SPK-ID: 2091055
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1280311344926778 3.972e-08  
a 2.566880493069025 1.0994e-08 au
q 2.238239871434274 1.0298e-07 au
i 13.35798198711442 5.0909e-06 deg
node 357.190336438822 1.894e-05 deg
peri 88.69829674679275 2.8424e-05 deg
M 225.5451528089369 2.0415e-05 deg
tp 2459561.523255443597
(2021-Dec-13.02325544)
8.5486e-05 TDB
period 1502.127860609545
4.11
9.6509e-06
2.642e-08
d
yr
n .239660024582672 1.5398e-09 deg/d
Q 2.895521114703776 1.2402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1577  
   data-arc span      7800 days (21.36 yr)  
   first obs. used      1998-02-23  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48922  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:00:12  

Additional Information
 Earth MOID = 1.301 au 
 Jupiter MOID = 2.35729 au 
 T_jup = 3.383 
[ 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 14.0   n/a MPO302516  
diameter diameter 3.972 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.338   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91055 (1998 FD49)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 FD49 = 2000 OT20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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