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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259016053206305 4.5216e-08  
a 2.742996534978138 1.9081e-08 au
q 2.397648867835463 1.2667e-07 au
i 6.941837658294838 4.9551e-06 deg
node 41.23177715585056 4.2412e-05 deg
peri 292.3279273058749 4.7287e-05 deg
M 194.4718975641394 2.3642e-05 deg
tp 2459763.466643164888
(2022-Jul-02.96664316)
0.00011151 TDB
period 1659.34356461187
4.54
1.7315e-05
4.741e-08
d
yr
n .2169532625295751 2.2638e-09 deg/d
Q 3.088344202120813 2.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      8926 days (24.44 yr)  
   first obs. used      1995-11-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53119  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:37:15  

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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