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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2626801606977454 4.2215e-08  
a 2.602205317001937 1.0678e-08 au
q 1.918657606163341 1.0723e-07 au
i 12.24708076363141 5.5511e-06 deg
node 314.9696284535376 2.3518e-05 deg
peri 160.5156167331394 2.6789e-05 deg
M 108.7298757790261 1.4158e-05 deg
tp 2458737.418791671985
(2019-Sep-10.91879167)
5.8428e-05 TDB
period 1533.24220968386
4.20
9.4371e-06
2.584e-08
d
yr
n .2347965622954175 1.4452e-09 deg/d
Q 3.285753027840534 1.3482e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:32:56  

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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2632151423355343 4.2404e-08  
q 1.917524005745246 1.0802e-07 au
tp 2457205.259326543982
(2015-Jul-01.75932654)
5.2791e-05 TDB
node 314.9983891305339 2.3505e-05 deg
peri 160.7403701196383 2.6737e-05 deg
i 12.25119730525581 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:32:56  

Additional Information
 Jupiter MOID = 1.82999 au 
 T_jup = 3.333 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.798137951578603E-15 -4.570031567005347E-15 1.009912419301252E-12 -8.408096901718872E-15 2.595026616423025E-13 -2.036347295181796E-15
q -4.570031567005347E-15 1.166750964610274E-14 -2.428699757497432E-12 1.906831102921244E-14 -6.27618662328523E-13 5.395305365955767E-15
tp 1.009912419301252E-12 -2.428699757497432E-12 2.786865255681414E-9 9.695702901806392E-13 6.964612810311108E-10 -2.32972226254382E-13
node -8.408096901718872E-15 1.906831102921244E-14 9.695702901806392E-13 5.524748621089082E-10 -5.398007183008334E-10 4.460566350475598E-11
peri 2.595026616423025E-13 -6.27618662328523E-13 6.964612810311108E-10 -5.398007183008334E-10 7.148421947157259E-10 -4.378288466212345E-11
i -2.036347295181796E-15 5.395305365955767E-15 -2.32972226254382E-13 4.460566350475598E-11 -4.378288466212345E-11 3.08320970666121E-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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