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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006722554372607 5.2251e-08  
a 2.198569219936163 9.3934e-09 au
q 1.977234297830251 1.1884e-07 au
i 6.744095644848112 3.866e-06 deg
node 311.1621383007042 3.8518e-05 deg
peri 53.29115273269769 4.2892e-05 deg
M 318.8277003600868 1.6644e-05 deg
tp 2459136.679352909482
(2020-Oct-14.17935291)		 5.4777e-05 TDB
period 1190.71724135341
3.26		 7.6311e-06
2.089e-08		 d
yr
n .3023387816160382 1.9376e-09 deg/d
Q 2.419904142042076 1.0339e-08 au
   Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      7992 days (21.88 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 12:23:00  

Additional Information
 Earth MOID = .982049 au 
 Jupiter MOID = 2.98637 au 
 T_jup = 3.651 
[ 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 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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