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160921 (2001 XH115)
Classification: Main-belt Asteroid          SPK-ID: 2160921
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006722556468719 5.224e-08  
a 2.198569219758924 9.3697e-09 au
q 1.97723429721001 1.1882e-07 au
i 6.744095996402112 3.7929e-06 deg
node 311.1621376137797 3.8495e-05 deg
peri 53.29115306339171 4.2837e-05 deg
M 318.8277008105392 1.651e-05 deg
tp 2459136.679351403122
(2020-Oct-14.17935140)
5.4323e-05 TDB
period 1190.717241209424
3.26
7.6118e-06
2.084e-08
d
yr
n .302338781652598 1.9327e-09 deg/d
Q 2.419904142307839 1.0313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8007 days (21.92 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:17:41  

Additional Information
 Earth MOID = .982049 au 
 Jupiter MOID = 2.98637 au 
 T_jup = 3.651 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458018.5 (2017-Sep-22.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013031394579234 5.2241e-08  
q 1.975685321484226 1.1894e-07 au
tp 2457947.172285123812
(2017-Jul-12.67228512)
5.6756e-05 TDB
node 311.1947936712645 3.8529e-05 deg
peri 53.59466258023846 4.2809e-05 deg
i 6.741340952058354 3.7916e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8007 days (21.92 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:17:41  

Additional Information
 Jupiter MOID = 2.98637 au 
 T_jup = 3.651 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.72909014164461E-15 -6.20124185139618E-15 3.753868441151643E-13 3.753603318107788E-14 5.797815599423542E-14 -7.682462961546038E-15
q -6.20124185139618E-15 1.41477568063962E-14 -1.036734467160058E-12 -8.378589891521703E-14 -1.906620130769059E-13 1.78686300367903E-14
tp 3.753868441151643E-13 -1.036734467160058E-12 3.221276668876756E-9 -1.706165938694289E-11 1.078933600192081E-9 -3.455362259413552E-12
node 3.753603318107788E-14 -8.378589891521703E-14 -1.706165938694289E-11 1.484454772972908E-9 -1.480029471101589E-9 7.752569581037927E-11
peri 5.797815599423542E-14 -1.906620130769059E-13 1.078933600192081E-9 -1.480029471101589E-9 1.832632733087278E-9 -7.807226400117775E-11
i -7.682462961546038E-15 1.78686300367903E-14 -3.455362259413552E-12 7.752569581037927E-11 -7.807226400117775E-11 1.437620792389314E-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 16.1   n/a MPO436811  
diameter diameter 1.811 km 0.505 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160921 (2001 XH115)          Discovered 2001-Dec-13 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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