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71121 (1999 XY163)
Classification: Main-belt Asteroid          SPK-ID: 2071121
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07284810003657921 3.4893e-08  
a 2.716998256381879 1.4759e-08 au
q 2.51907009560176 9.3959e-08 au
i 3.379826041901466 3.996e-06 deg
node 285.763215103798 8.1096e-05 deg
peri 212.6998425055666 8.7982e-05 deg
M 45.05764562528834 3.3661e-05 deg
tp 2458395.761998044555
(2018-Oct-04.26199804)
0.00015284 TDB
period 1635.808522196584
4.48
1.3329e-05
3.649e-08
d
yr
n .2200746573422833 1.7932e-09 deg/d
Q 2.914926417161997 1.5834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1379  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49268  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:36:22  

Additional Information
 Earth MOID = 1.53377 au 
 Jupiter MOID = 2.10847 au 
 T_jup = 3.354 
[ 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 14.0   n/a MPO385266  
diameter diameter 3.044 km 0.612 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.576   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71121 (1999 XY163)          Discovered 1999-Dec-08 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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