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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750976428716823 4.7098e-08  
a 2.436835358363847 1.0015e-08 au
q 1.766467695211582 1.1839e-07 au
i 9.155019436418643 4.0397e-06 deg
node 95.37586211780237 3.3439e-05 deg
peri 307.4105465208047 3.4698e-05 deg
M 319.2654527903042 1.1942e-05 deg
tp 2459157.716491712495
(2020-Nov-04.21649171)
4.6763e-05 TDB
period 1389.433316274264
3.80
8.5654e-06
2.345e-08
d
yr
n .2590984365952391 1.5973e-09 deg/d
Q 3.107203021516113 1.277e-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 = .793212 au 
 Jupiter MOID = 2.33432 au 
 T_jup = 3.434 
[ 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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