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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813162861529605 5.4487e-08  
a 2.603639753049381 1.7943e-08 au
q 2.131557462546256 1.4125e-07 au
i 14.52532291150685 6.3509e-06 deg
node 56.99412713675886 2.6021e-05 deg
peri 220.4552117589513 3.1489e-05 deg
M 81.57067608224142 1.9821e-05 deg
tp 2458652.802691582932
(2019-Jun-18.30269158)
8.3345e-05 TDB
period 1534.51015784084
4.20
1.5862e-05
4.343e-08
d
yr
n .2346025525869079 2.4251e-09 deg/d
Q 3.075722043552506 2.1196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      7284 days (19.94 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:24:13  

Additional Information
 Earth MOID = 1.13617 au 
 Jupiter MOID = 2.07489 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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