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JPL Small-Body Database Browser
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71009 (1999 XY44)
Classification: Main-belt Asteroid          SPK-ID: 2071009
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817392687264726 5.444e-08  
a 2.604875940271282 1.8527e-08 au
q 2.131467691763197 1.4148e-07 au
i 14.52664231908545 6.4069e-06 deg
node 57.00190851157073 2.6186e-05 deg
peri 220.5098472332445 3.1813e-05 deg
M 347.6899274659697 2.0259e-05 deg
tp 2458653.009405903510
(2019-Jun-18.50940590)
8.6606e-05 TDB
period 1535.603147179409
4.20
1.6383e-05
4.485e-08
d
yr
n .2344355705842665 2.5012e-09 deg/d
Q 3.078284188779367 2.1894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      7222 days (19.77 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51642  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:33  

Additional Information
 Earth MOID = 1.13574 au 
 Jupiter MOID = 2.07237 au 
 T_jup = 3.345 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO351343  
diameter diameter 3.075 km 0.450 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71009 (1999 XY44)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY44 = 2002 JX112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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