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43159 (1999 XP121)
Classification: Main-belt Asteroid          SPK-ID: 2043159
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02094404116244923 3.7601e-08  
a 2.907080145488523 1.6396e-08 au
q 2.846194139258872 1.0815e-07 au
i 2.015463513319445 6.3194e-06 deg
node 2.691427816595145 0.00012311 deg
peri 72.19994912373176 0.00020482 deg
M 78.45459056860906 0.00016265 deg
tp 2458805.952047520190
(2019-Nov-18.45204752)
0.00081759 TDB
period 1810.439158031412
4.96
1.5316e-05
4.193e-08
d
yr
n .1988467816788979 1.6822e-09 deg/d
Q 2.967966151718173 1.6739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      9168 days (25.10 yr)  
   first obs. used      1996-02-15  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:24:12  

Additional Information
 Earth MOID = 1.86088 au 
 Jupiter MOID = 2.07029 au 
 T_jup = 3.284 
[ 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 14.83   n/a MPCxxxxx  
diameter diameter 3.345 km 0.896 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43159 (1999 XP121)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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