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71103 (1999 XN144)
Classification: Main-belt Asteroid          SPK-ID: 2071103
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866075706747813 4.3311e-08  
a 2.550924673208079 1.2004e-08 au
q 2.074902816966359 1.1237e-07 au
i 5.690538710103982 5.3332e-06 deg
node 49.72562648265992 3.4877e-05 deg
peri 123.6538076152769 3.6904e-05 deg
M 294.7496392021442 1.2495e-05 deg
tp 2459270.227542274545
(2021-Feb-24.72754227)
5.2194e-05 TDB
period 1488.143728732101
4.07
1.0504e-05
2.876e-08
d
yr
n .2419121171223966 1.7075e-09 deg/d
Q 3.026946529449798 1.4243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1326  
   data-arc span      9272 days (25.39 yr)  
   first obs. used      1994-09-06  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:20:57  

Additional Information
 Earth MOID = 1.08599 au 
 Jupiter MOID = 1.9488 au 
 T_jup = 3.409 
[ 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 MPO351343  
diameter diameter 3.550 km 1.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71103 (1999 XN144)          Discovered 1999-Dec-11 by Urata, T. at Oohira
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XN144 = 2001 HB29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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