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JPL Small-Body Database Browser
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109226 (2001 QH91)
Classification: Mars-crossing Asteroid          SPK-ID: 2109226
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3853584618949886 4.2689e-08  
a 2.626262560874468 9.774e-09 au
q 1.614210059883489 1.0928e-07 au
i 6.134919214081452 4.8864e-06 deg
node 220.7756797311978 5.7987e-05 deg
peri 202.4545934001749 5.8585e-05 deg
M 40.314513515158 6.9488e-06 deg
tp 2458426.413712661891
(2018-Nov-03.91371266)
2.9657e-05 TDB
period 1554.553384804093
4.26
8.6782e-06
2.376e-08
d
yr
n .2315777660124343 1.2928e-09 deg/d
Q 3.638315061865447 1.354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      540  
   data-arc span      7678 days (21.02 yr)  
   first obs. used      1998-02-24  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50314  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:44:34  

Additional Information
 Earth MOID = .628923 au 
 Jupiter MOID = 1.71992 au 
 T_jup = 3.285 
[ 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 16.0   n/a MPO453551  
diameter diameter 3.971 km 0.901 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.045   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

109226 (2001 QH91)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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