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91118 (1998 HU88)
Classification: Main-belt Asteroid          SPK-ID: 2091118
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 .05045188727221073 6.3359e-08  
a 2.730482346586645 1.7609e-08 au
q 2.592724359037894 1.7668e-07 au
i 4.109351886213876 5.972e-06 deg
node 220.5928347016304 6.9501e-05 deg
peri 339.5948143647012 8.4967e-05 deg
M 337.3071050316698 4.6462e-05 deg
tp 2459104.383097049890
(2020-Sep-11.88309705)
0.00021263 TDB
period 1648.001058928461
4.51
1.5942e-05
4.365e-08
d
yr
n .2184464615781702 2.1131e-09 deg/d
Q 2.868240334135395 1.8497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      9007 days (24.66 yr)  
   first obs. used      1995-08-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:37:58  

Additional Information
 Earth MOID = 1.5897 au 
 Jupiter MOID = 2.09595 au 
 T_jup = 3.349 
[ 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 15.6   n/a MPO351483  
diameter diameter 5.403 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91118 (1998 HU88)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 HU88 = 1995 QZ13 = 2002 EK75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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