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109391 (2001 QY171)
Classification: Main-belt Asteroid          SPK-ID: 2109391
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 .2814257725021348 6.1838e-08  
a 2.582838434711995 1.4114e-08 au
q 1.855961132974967 1.6267e-07 au
i 12.75414595511016 4.5734e-06 deg
node 174.6914106140674 2.3886e-05 deg
peri 245.2023316716875 2.5517e-05 deg
M 127.997834826164 6.9955e-06 deg
tp 2458461.430935087801
(2018-Dec-08.93093509)
2.8284e-05 TDB
period 1516.157391505523
4.15
1.2428e-05
3.403e-08
d
yr
n .237442367142718 1.9463e-09 deg/d
Q 3.309715736449023 1.8087e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      9151 days (25.05 yr)  
   first obs. used      1995-04-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51917  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:04:18  

Additional Information
 Earth MOID = .906871 au 
 Jupiter MOID = 2.20972 au 
 T_jup = 3.333 
[ 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 15.9   n/a MPO469118  
diameter diameter 4.286 km 0.916 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.044   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

109391 (2001 QY171)          Discovered 2001-Aug-25 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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