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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637134292441848 5.0886e-08  
a 2.422112527384901 1.7497e-08 au
q 2.025580179511419 1.2983e-07 au
i 6.965022305554306 5.2656e-06 deg
node 285.5831772780581 5.4209e-05 deg
peri 315.8832148742325 6.0029e-05 deg
M 253.1154686547932 3.0681e-05 deg
tp 2459609.291876823932
(2022-Jan-29.79187682)
0.00011974 TDB
period 1376.860372632537
3.77
1.492e-05
4.085e-08
d
yr
n .2614644209068819 2.8332e-09 deg/d
Q 2.818644875258383 2.0362e-08 au
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      7029 days (19.24 yr)  
   first obs. used      2001-12-14  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55931  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:03:24  

Additional Information
 Earth MOID = 1.0177 au 
 Jupiter MOID = 2.23568 au 
 T_jup = 3.484 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457288.5 (2015-Sep-23.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639336583305651 5.0804e-08  
q 2.024800411863929 1.296e-07 au
tp 2456856.836860458496
(2014-Jul-18.33686046)
0.00010631 TDB
node 285.6296621918884 5.4244e-05 deg
peri 315.9768931877747 6.0082e-05 deg
i 6.962800900741779 5.265e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      7029 days (19.24 yr)  
   first obs. used      2001-12-14  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55931  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:03:24  

Additional Information
 Jupiter MOID = 2.23568 au 
 T_jup = 3.484 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.581017944054315E-15 -6.549270871870785E-15 -2.159826307588122E-12 1.385543845227856E-14 -5.45672986472305E-13 4.730776808053868E-15
q -6.549270871870785E-15 1.679714410492794E-14 5.759900643471978E-12 -4.017465179244633E-14 1.467767988159751E-12 -1.199672435138512E-14
tp -2.159826307588122E-12 5.759900643471978E-12 1.130163332106517E-8 -6.006159603923125E-11 2.802718221453014E-9 -1.406604671259695E-11
node 1.385543845227856E-14 -4.017465179244633E-14 -6.006159603923125E-11 2.942385181238462E-9 -2.934808317791597E-9 7.585765786740905E-11
peri -5.45672986472305E-13 1.467767988159751E-12 2.802718221453014E-9 -2.934808317791597E-9 3.609852339794193E-9 -7.869182185911771E-11
i 4.730776808053868E-15 -1.199672435138512E-14 -1.406604671259695E-11 7.585765786740905E-11 -7.869182185911771E-11 2.772000323416613E-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 16.37   n/a MPCxxxxx  
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

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