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JPL Small-Body Database Browser
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173985 (2001 XB157)
Classification: Outer Main-belt Asteroid          SPK-ID: 2173985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09021816858537221 5.3986e-08  
a 3.222950668492282 3.8365e-08 au
q 2.932181961739907 1.8113e-07 au
i 15.29312910853298 8.0635e-06 deg
node 299.0663172915918 2.2908e-05 deg
peri 107.7271622057943 5.5873e-05 deg
M 32.58285359577877 4.7641e-05 deg
tp 2458409.221776203510
(2018-Oct-17.72177620)
0.0002796 TDB
period 2113.386427751607
5.79
3.7736e-05
1.033e-07
d
yr
n .170342723542044 3.0416e-09 deg/d
Q 3.513719375244656 4.1826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      6701 days (18.35 yr)  
   first obs. used      2000-09-27  
   last obs. used      2019-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:43:04  

Additional Information
 Earth MOID = 1.98827 au 
 Jupiter MOID = 1.83349 au 
 T_jup = 3.127 
[ 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 14.6   n/a MPO385764  
diameter diameter 6.197 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.026   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

173985 (2001 XB157)          Discovered 2001-Dec-14 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2001 XB157 = 2000 SK314 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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