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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497432647244899 4.2541e-08  
a 2.727497382004135 1.8116e-08 au
q 2.319073019495337 1.2027e-07 au
i 12.45979623903104 4.2626e-06 deg
node 62.4337058450196 2.3345e-05 deg
peri 250.5046563356807 2.8044e-05 deg
M 321.5262466994199 1.7369e-05 deg
tp 2459572.335676077297
(2021-Dec-23.83567608)
7.9717e-05 TDB
period 1645.299404331123
4.50
1.6392e-05
4.488e-08
d
yr
n .2188051603570316 2.1799e-09 deg/d
Q 3.135921744512934 2.0829e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1208  
   data-arc span      8539 days (23.38 yr)  
   first obs. used      1998-03-24  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50725  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:34  

Additional Information
 Earth MOID = 1.33932 au 
 Jupiter MOID = 2.17668 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 14.39   n/a MPO637239  
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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