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250000 (2001 XB242)
Classification: Main-belt Asteroid          SPK-ID: 2250000
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1499179228514038 5.5323e-08  
a 2.880307919566392 2.8275e-08 au
q 2.44849813909255 1.6848e-07 au
i 12.87159373110564 6.6358e-06 deg
node 75.19018426632881 2.4186e-05 deg
peri 245.7974759874627 3.5284e-05 deg
M 18.22063730789014 2.5357e-05 deg
tp 2458910.131334863572
(2020-Mar-01.63133486)
0.00012525 TDB
period 1785.487461244083
4.89
2.6291e-05
7.198e-08
d
yr
n .2016256108285191 2.9689e-09 deg/d
Q 3.312117700040234 3.2514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      7414 days (20.30 yr)  
   first obs. used      1999-03-20  
   last obs. used      2019-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65066  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:19:29  

Additional Information
 Earth MOID = 1.46822 au 
 Jupiter MOID = 2.03809 au 
 T_jup = 3.241 
[ 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 15.8   n/a MPO446306  
diameter diameter 4.286 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

250000 (2001 XB242)          Discovered 2001-Dec-14 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 2001 XB242 = 2005 PZ6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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