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135490 (2001 XT9)
Classification: Main-belt Asteroid          SPK-ID: 2135490
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2191464811823022 4.7184e-08  
a 2.883581089628451 1.6081e-08 au
q 2.251654440632547 1.3856e-07 au
i 9.105806793631897 3.7756e-06 deg
node 46.75664888300904 2.8017e-05 deg
peri 328.1385012810633 2.9521e-05 deg
M 3.906687704685359 7.933e-06 deg
tp 2459181.091012739464
(2020-Nov-27.59101274)
3.9425e-05 TDB
period 1788.531856644999
4.90
1.4961e-05
4.096e-08
d
yr
n .2012824086204999 1.6837e-09 deg/d
Q 3.515507738624355 1.9605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      851  
   data-arc span      10679 days (29.24 yr)  
   first obs. used      1991-11-11  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:13:17  

Additional Information
 Earth MOID = 1.25804 au 
 Jupiter MOID = 1.96171 au 
 T_jup = 3.239 
[ 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 15.10   n/a MPCxxxxx  
diameter diameter 6.626 km 0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

135490 (2001 XT9)          Discovered 2001-Dec-09 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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