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JPL Small-Body Database Browser
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91038 (1998 FW8)
Classification: Main-belt Asteroid          SPK-ID: 2091038
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259016043848706 4.5246e-08  
a 2.742996537812263 1.9724e-08 au
q 2.397648872879554 1.2697e-07 au
i 6.941836807366045 5.3265e-06 deg
node 41.23177476367094 4.3038e-05 deg
peri 292.3279254631132 4.836e-05 deg
M 194.4719007009744 2.422e-05 deg
tp 2459763.466629888784
(2022-Jul-02.96662989)
0.00011369 TDB
period 1659.343567183577
4.54
1.7898e-05
4.9e-08
d
yr
n .2169532621933336 2.3401e-09 deg/d
Q 3.088344202744973 2.2208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      8840 days (24.20 yr)  
   first obs. used      1995-11-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52618  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:22:26  

Additional Information
 Earth MOID = 1.39864 au 
 Jupiter MOID = 2.29372 au 
 T_jup = 3.327 
[ 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 15.2   n/a MPO468895  
diameter diameter 5.512 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91038 (1998 FW8)          Discovered 1998-Mar-22 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 FW8 = 1995 WU32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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