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109281 (2001 QX118)
Classification: Main-belt Asteroid          SPK-ID: 2109281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2626801611729729 4.2215e-08  
a 2.602205319950654 1.0678e-08 au
q 1.918657607100849 1.0723e-07 au
i 12.24708076448531 5.5511e-06 deg
node 314.9696284255016 2.3518e-05 deg
peri 160.5156165341109 2.6789e-05 deg
M 108.729875738242 1.4158e-05 deg
tp 2458737.418791058566
(2019-Sep-10.91879106)
5.8428e-05 TDB
period 1533.242212289975
4.20
9.4371e-06
2.584e-08
d
yr
n .2347965618963241 1.4452e-09 deg/d
Q 3.28575303280046 1.3483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      7767 days (21.26 yr)  
   first obs. used      1999-02-23  
   last obs. used      2020-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:14:56  

Additional Information
 Earth MOID = .938833 au 
 Jupiter MOID = 1.82999 au 
 T_jup = 3.333 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457226.5 (2015-Jul-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2632151436174485 4.2404e-08  
q 1.917524002101825 1.0802e-07 au
tp 2457205.259325313949
(2015-Jul-01.75932531)
5.2791e-05 TDB
node 314.9983891410736 2.3505e-05 deg
peri 160.7403699525062 2.6737e-05 deg
i 12.25119731282237 5.5527e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      7767 days (21.26 yr)  
   first obs. used      1999-02-23  
   last obs. used      2020-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:14:56  

Additional Information
 Jupiter MOID = 1.82999 au 
 T_jup = 3.333 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.798137864751818E-15 -4.570030689267558E-15 1.009912666473939E-12 -8.408032209515059E-15 2.595025994366659E-13 -2.036342814503269E-15
q -4.570030689267558E-15 1.166750568100979E-14 -2.428699862318465E-12 1.906812990872146E-14 -6.276184124562595E-13 5.395294462530811E-15
tp 1.009912666473939E-12 -2.428699862318465E-12 2.786863581645034E-9 9.694987668158449E-13 6.964610939282997E-10 -2.329662253099607E-13
node -8.408032209515059E-15 1.906812990872146E-14 9.694987668158449E-13 5.524748792806896E-10 -5.398007436001261E-10 4.4605653845847E-11
peri 2.595025994366659E-13 -6.276184124562595E-13 6.964610939282997E-10 -5.398007436001261E-10 7.148421738239373E-10 -4.378287333048603E-11
i -2.036342814503269E-15 5.395294462530811E-15 -2.329662253099607E-13 4.4605653845847E-11 -4.378287333048603E-11 3.083209555696366E-11

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 14.95   n/a E2021B55  
diameter diameter 4.811 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.101   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

109281 (2001 QX118)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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