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91121 (1998 HS105)
Classification: Main-belt Asteroid          SPK-ID: 2091121
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494964054531646 4.4031e-08  
a 2.727848181308394 2.0799e-08 au
q 2.320044683580837 1.2302e-07 au
i 12.45919187167538 4.7527e-06 deg
node 62.43846480940586 2.5007e-05 deg
peri 250.4296266455869 3.0426e-05 deg
M 234.9316593015443 1.9093e-05 deg
tp 2459572.207129394892
(2021-Dec-23.70712940)
8.8497e-05 TDB
period 1645.616831827869
4.51
1.8821e-05
5.153e-08
d
yr
n .2187629544358331 2.502e-09 deg/d
Q 3.135651679035951 2.3908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      7988 days (21.87 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:23:44  

Additional Information
 Earth MOID = 1.34073 au 
 Jupiter MOID = 2.17801 au 
 T_jup = 3.306 
[ 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 14.3   n/a MPO320098  
diameter diameter 3.860 km 0.699 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91121 (1998 HS105)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 HS105 = 2000 YK26 = 2002 FO29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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