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71191 (1999 XX229)
Classification: Main-belt Asteroid          SPK-ID: 2071191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470661490225202 4.1497e-08  
a 2.721093243195417 1.5233e-08 au
q 2.320912538787467 1.1003e-07 au
i 7.94954231794298 5.3553e-06 deg
node 346.3314840739007 3.2915e-05 deg
peri 126.8158783710358 3.796e-05 deg
M 165.6449294518758 2.042e-05 deg
tp 2458246.121663535871
(2018-May-07.62166354)
9.0183e-05 TDB
period 1639.508085310794
4.49
1.3767e-05
3.769e-08
d
yr
n .2195780571169044 1.8439e-09 deg/d
Q 3.121273947603367 1.7473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      9380 days (25.68 yr)  
   first obs. used      1994-10-10  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:38:45  

Additional Information
 Earth MOID = 1.34725 au 
 Jupiter MOID = 1.98863 au 
 T_jup = 3.329 
[ 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 MPO385267  
diameter diameter 6.885 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71191 (1999 XX229)          Discovered 1999-Dec-07 by CSS at Catalina
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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