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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429425763862179 4.9493e-08  
a 2.688501213930687 1.9312e-08 au
q 2.304199923793961 1.2738e-07 au
i 10.41722449424266 5.8244e-06 deg
node 255.5949823372584 2.7909e-05 deg
peri 264.1594763521073 3.4159e-05 deg
M 158.0369350650904 2.0839e-05 deg
tp 2458293.662015349797
(2018-Jun-24.16201535)
9.1673e-05 TDB
period 1610.140530561848
4.41
1.7349e-05
4.75e-08
d
yr
n .2235829687948916 2.4091e-09 deg/d
Q 3.072802504067414 2.2073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      657  
   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      .52594  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:19:14  

Additional Information
 Earth MOID = 1.34125 au 
 Jupiter MOID = 2.06423 au 
 T_jup = 3.335 
[ 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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