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101532 (1998 XS99)
Classification: Main-belt Asteroid          SPK-ID: 2101532
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1766971504308752 3.8218e-08  
a 2.380229845812937 7.8878e-09 au
q 1.95965001468727 9.0642e-08 au
i 3.379340602061855 4.522e-06 deg
node 38.82597965767931 5.0296e-05 deg
peri 345.3240834903828 5.1357e-05 deg
M 26.55654356114047 8.9806e-06 deg
tp 2459101.554551791874
(2020-Sep-09.05455179)
3.3502e-05 TDB
period 1341.302616167555
3.67
6.6674e-06
1.825e-08
d
yr
n .2683958084183957 1.3341e-09 deg/d
Q 2.800809676938604 9.2815e-09 au
  Orbit Determination Parameters
   # obs. used (total)      628  
   data-arc span      9091 days (24.89 yr)  
   first obs. used      1996-03-22  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:13  

Additional Information
 Earth MOID = .962325 au 
 Jupiter MOID = 2.6531 au 
 T_jup = 3.515 
[ 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 16.4   n/a MPO436475  
diameter diameter 3.171 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101532 (1998 XS99)          Discovered 1998-Dec-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 XS99 = 2003 AA22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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