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JPL Small-Body Database Browser
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71157 (1999 XD194)
Classification: Main-belt Asteroid          SPK-ID: 2071157
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09345553476645994 4.4771e-08  
a 3.014738248316223 2.5011e-08 au
q 2.73299427313893 1.3847e-07 au
i 11.2019391527947 5.1583e-06 deg
node 52.48771233617327 2.5237e-05 deg
peri 11.97606058568209 3.9126e-05 deg
M 271.194249525788 2.9039e-05 deg
tp 2459072.140869362169
(2020-Aug-10.64086936)
0.00015525 TDB
period 1911.9337662676
5.23
2.3793e-05
6.514e-08
d
yr
n .1882910414322445 2.3432e-09 deg/d
Q 3.296482223493516 2.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      10350 days (28.34 yr)  
   first obs. used      1991-05-18  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57313  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:43  

Additional Information
 Earth MOID = 1.74664 au 
 Jupiter MOID = 2.05019 au 
 T_jup = 3.213 
[ 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 14.2   n/a MPO319897  
diameter diameter 5.498 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71157 (1999 XD194)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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