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JPL Small-Body Database Browser
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109558 (2001 QT261)
Classification: Main-belt Asteroid          SPK-ID: 2109558
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03829497931258825 5.4603e-08  
a 2.765557560017592 1.9001e-08 au
q 2.659650590468946 1.5024e-07 au
i 5.893385027161307 5.1489e-06 deg
node 277.2241261281848 5.1672e-05 deg
peri 239.2338732554655 8.2061e-05 deg
M 150.288342016911 6.5192e-05 deg
tp 2457899.213833147615
(2017-May-25.71383315)
0.0003038 TDB
period 1679.85764350538
4.60
1.7312e-05
4.74e-08
d
yr
n .2143038735406075 2.2086e-09 deg/d
Q 2.871464529566237 1.9729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      6639 days (18.18 yr)  
   first obs. used      2001-08-25  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:52:54  

Additional Information
 Earth MOID = 1.67597 au 
 Jupiter MOID = 2.15127 au 
 T_jup = 3.331 
[ 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 MPO449653  
diameter diameter 6.062 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109558 (2001 QT261)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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