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146775 (2001 XD226)
Classification: Main-belt Asteroid          SPK-ID: 2146775
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06468133227518581 4.9117e-08  
a 2.778026124489196 1.6716e-08 au
q 2.598339693661964 1.4101e-07 au
i 3.336088677388775 4.3124e-06 deg
node 261.2396835308224 0.00010105 deg
peri 146.3638936490703 0.00010967 deg
M 17.1344294842153 4.1942e-05 deg
tp 2458920.004785331764
(2020-Mar-11.50478533)
0.00019694 TDB
period 1691.23093986063
4.63
1.5264e-05
4.179e-08
d
yr
n .2128627093527905 1.9212e-09 deg/d
Q 2.957712555316429 1.7797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      8494 days (23.26 yr)  
   first obs. used      1996-10-04  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 19:26:41  

Additional Information
 Earth MOID = 1.60897 au 
 Jupiter MOID = 2.29822 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456941.5 (2014-Oct-11.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06369793963961656 4.979e-08  
q 2.601507833796256 1.4281e-07 au
tp 2457217.130494643451
(2015-Jul-13.63049464)
0.00019718 TDB
node 261.4383546356686 0.00010142 deg
peri 143.8427257210724 0.00011011 deg
i 3.328706948344769 4.3043e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      8494 days (23.26 yr)  
   first obs. used      1996-10-04  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 19:26:41  

Additional Information
 Jupiter MOID = 2.29822 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.47900611352727E-15 -7.069481721090085E-15 -4.165956781067082E-12 -1.034229444530055E-14 -9.157341489483826E-13 -5.439005405530096E-16
q -7.069481721090085E-15 2.039338146507031E-14 1.179908525956085E-11 3.182245136748951E-14 2.582596597874121E-12 1.874824278914521E-15
tp -4.165956781067082E-12 1.179908525956085E-11 3.887840243010955E-8 6.141315620943803E-11 8.508145740810538E-9 2.244594780722477E-12
node -1.034229444530055E-14 3.182245136748951E-14 6.141315620943803E-11 1.028507574006846E-8 -1.025428366454229E-8 -8.516056678517094E-11
peri -9.157341489483826E-13 2.582596597874121E-12 8.508145740810538E-9 -1.025428366454229E-8 1.212466474013538E-8 8.548886495690632E-11
i -5.439005405530096E-16 1.874824278914521E-15 2.244594780722477E-12 -8.516056678517094E-11 8.548886495690632E-11 1.852737828015472E-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 16.1   n/a MPO502888  
diameter diameter 3.982 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

146775 (2001 XD226)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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