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JPL Small-Body Database Browser
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71016 (1999 XR55)
Classification: Main-belt Asteroid          SPK-ID: 2071016
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414909264399209 4.9686e-08  
a 2.690388595644056 1.9152e-08 au
q 2.309723020762981 1.2762e-07 au
i 10.42200713883826 5.8336e-06 deg
node 255.6193412941179 2.7923e-05 deg
peri 264.2521241452497 3.4326e-05 deg
M 68.6648397811487 2.0945e-05 deg
tp 2458293.065319353378
(2018-Jun-23.56531935)
9.3196e-05 TDB
period 1611.836354465205
4.41
1.7212e-05
4.712e-08
d
yr
n .2233477356449411 2.385e-09 deg/d
Q 3.071054170525131 2.1862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7230 days (19.79 yr)  
   first obs. used      1999-11-03  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53103  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:33  

Additional Information
 Earth MOID = 1.34718 au 
 Jupiter MOID = 2.06698 au 
 T_jup = 3.334 
[ 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 14.8   n/a MPO344810  
diameter diameter 6.107 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71016 (1999 XR55)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XR55 = 2001 HA49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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