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135512 (2001 XX257)
Classification: Main-belt Asteroid          SPK-ID: 2135512
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1383625866507366 4.4731e-08  
a 3.164769160815867 2.73e-08 au
q 2.726883513572902 1.3824e-07 au
i 17.270848856114 5.2481e-06 deg
node 268.6808511829317 1.905e-05 deg
peri 150.0261183636085 2.9276e-05 deg
M 126.3600596904819 2.1161e-05 deg
tp 2458478.696796177256
(2018-Dec-26.19679618)
0.00011956 TDB
period 2056.41841269058
5.63
2.6609e-05
7.285e-08
d
yr
n .1750616497977095 2.2652e-09 deg/d
Q 3.602654808058831 3.1077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      586  
   data-arc span      7266 days (19.89 yr)  
   first obs. used      2000-06-03  
   last obs. used      2020-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52618  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:13:23  

Additional Information
 Earth MOID = 1.75315 au 
 Jupiter MOID = 1.72967 au 
 T_jup = 3.119 
[ 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 14.4   n/a MPO469425  
diameter diameter 8.379 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

135512 (2001 XX257)          Discovered 2001-Dec-07 by NEAT at Palomar
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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