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129105 (2004 XT20)
Classification: Main-belt Asteroid          SPK-ID: 2129105
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2023735153316661 3.6941e-08  
a 3.036884486704609 2.5102e-08 au
q 2.422299497473995 1.2115e-07 au
i 3.491964464168135 4.4187e-06 deg
node 100.5489954649717 8.2587e-05 deg
peri 308.367083582821 8.3677e-05 deg
M 351.966130384074 1.423e-05 deg
tp 2459043.638308790506
(2020-Jul-13.13830879)
7.6652e-05 TDB
period 1933.039980359738
5.29
2.3966e-05
6.562e-08
d
yr
n .186235154811958 2.309e-09 deg/d
Q 3.651469475935223 3.0181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      537  
   data-arc span      9544 days (26.13 yr)  
   first obs. used      1993-10-09  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53729  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:50:11  

Additional Information
 Earth MOID = 1.43457 au 
 Jupiter MOID = 1.74117 au 
 T_jup = 3.207 
[ 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 15.2   n/a MPO453770  
diameter diameter 5.235 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129105 (2004 XT20)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2004 XT20 = 1993 TF28 = 1998 RJ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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