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JPL Small-Body Database Browser
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109331 (2001 QY142)
Classification: Main-belt Asteroid          SPK-ID: 2109331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2758240942427855 4.7289e-08  
a 2.438479742242245 1.0031e-08 au
q 1.765888276008897 1.1909e-07 au
i 9.152362051257009 4.038e-06 deg
node 95.3838614505752 3.3457e-05 deg
peri 307.2153108957633 3.4685e-05 deg
M 215.9943290280889 1.141e-05 deg
tp 2459156.857887172111
(2020-Nov-03.35788717)
4.6521e-05 TDB
period 1390.839944220163
3.81
8.5822e-06
2.35e-08
d
yr
n .2588363970247131 1.5971e-09 deg/d
Q 3.111071208475594 1.2798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      13011 days (35.62 yr)  
   first obs. used      1982-10-18  
   last obs. used      2018-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58866  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:17:47  

Additional Information
 Earth MOID = .792197 au 
 Jupiter MOID = 2.32993 au 
 T_jup = 3.433 
[ 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 15.1   n/a MPO436525  
diameter diameter 2.441 km 0.652 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.262   0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

109331 (2001 QY142)          Discovered 2001-Aug-24 by Tucker, R. A. at Goodricke-Pigott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 QY142 = 1982 US2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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