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160931 (2001 XE248)
Classification: Main-belt Asteroid          SPK-ID: 2160931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638700896148437 6.7567e-08  
a 2.421881392430453 2.2366e-08 au
q 2.025007471616353 1.6144e-07 au
i 6.965383230621723 5.2994e-06 deg
node 285.5827445288465 8.0299e-05 deg
peri 315.8801593690182 8.4066e-05 deg
M 200.8358916814188 3.0396e-05 deg
tp 2459609.153848496451
(2022-Jan-29.65384850)
0.00011988 TDB
period 1376.663292833227
3.77
1.907e-05
5.221e-08
d
yr
n .2615018515232623 3.6225e-09 deg/d
Q 2.818755313244554 2.6031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      6549 days (17.93 yr)  
   first obs. used      2001-12-14  
   last obs. used      2019-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57264  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 12:25:37  

Additional Information
 Earth MOID = 1.0186 au 
 Jupiter MOID = 2.23666 au 
 T_jup = 3.485 
[ show covariance matrix ]

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 16.3   n/a MPO366955  
diameter diameter 1.579 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160931 (2001 XE248)          Discovered 2001-Dec-14 by Spacewatch at Kitt Peak
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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