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JPL Small-Body Database Browser
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71102 (1999 XH144)
Classification: Main-belt Asteroid          SPK-ID: 2071102
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 .1903373135896562 4.5437e-08  
a 2.707935198437273 1.3667e-08 au
q 2.19251408739185 1.2075e-07 au
i 14.98437406370353 4.7797e-06 deg
node 61.98185980311888 1.4413e-05 deg
peri 342.9057788780373 1.7493e-05 deg
M 254.5888118102185 1.2711e-05 deg
tp 2459477.084634110505
(2021-Sep-19.58463411)
6.0048e-05 TDB
period 1627.630531693539
4.46
1.2322e-05
3.374e-08
d
yr
n .2211804171708566 1.6744e-09 deg/d
Q 3.223356309482696 1.6268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1997-06-07  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:20:57  

Additional Information
 Earth MOID = 1.20691 au 
 Jupiter MOID = 2.17461 au 
 T_jup = 3.290 
[ 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 14.0   n/a MPO390208  
diameter diameter 4.493 km 0.427 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.167   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71102 (1999 XH144)          Discovered 1999-Dec-15 by Juels, C. W. at Fountain Hills
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XH144 = 1997 LZ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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