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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03837662424583181 5.4029e-08  
a 2.765434462392001 1.8565e-08 au
q 2.659306423152309 1.4894e-07 au
i 5.893547098914381 5.1008e-06 deg
node 277.2247879168269 5.1368e-05 deg
peri 238.8222289195727 8.1691e-05 deg
M 236.4562295455497 6.5045e-05 deg
tp 2459576.950252285562
(2021-Dec-28.45025229)
0.00030409 TDB
period 1679.745486635558
4.60
1.6915e-05
4.631e-08
d
yr
n .2143181826438844 2.1582e-09 deg/d
Q 2.871562501631693 1.9278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      6916 days (18.93 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54645  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:34:24  

Additional Information
 Earth MOID = 1.6752 au 
 Jupiter MOID = 2.15005 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03628183613198293 5.4185e-08  
q 2.666588115792347 1.4906e-07 au
tp 2456218.777633925392
(2012-Oct-18.27763393)
0.00031897 TDB
node 277.3411288031609 5.1459e-05 deg
peri 239.4072371470148 8.4471e-05 deg
i 5.886202721040393 5.0965e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      6916 days (18.93 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54645  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:34:24  

Additional Information
 Jupiter MOID = 2.15005 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.936008533358656E-15 -8.017982710879289E-15 -2.477496813761369E-12 -4.786724181251995E-15 -4.475363690343595E-13 2.94705349163062E-15
q -8.017982710879289E-15 2.22196680053714E-14 6.764365398068297E-12 1.6914989547172E-14 1.237735782753929E-12 -7.270430326356277E-15
tp -2.477496813761369E-12 6.764365398068297E-12 1.017400026737215E-7 1.550957135191219E-11 2.13976108293729E-8 2.188143047588986E-12
node -4.786724181251995E-15 1.6914989547172E-14 1.550957135191219E-11 2.64797826405549E-9 -2.63006579457867E-9 4.497864204981176E-11
peri -4.475363690343595E-13 1.237735782753929E-12 2.13976108293729E-8 -2.63006579457867E-9 7.135349497725207E-9 -4.414977984834774E-11
i 2.94705349163062E-15 -7.270430326356277E-15 2.188143047588986E-12 4.497864204981176E-11 -4.414977984834774E-11 2.597454340668774E-11

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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