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49842 (1999 XS90)
Classification: Main-belt Asteroid          SPK-ID: 2049842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .068204112272508 4.0245e-08  
a 2.292253384579798 9.6755e-09 au
q 2.135912277380881 8.9324e-08 au
i 8.038697580618425 3.9232e-06 deg
node 101.4721483833728 2.9894e-05 deg
peri 79.6413410409953 4.279e-05 deg
M 134.4291656736739 3.1852e-05 deg
tp 2458127.148929858390
(2018-Jan-08.64892986)
0.00011095 TDB
period 1267.629568308414
3.47
8.0259e-06
2.197e-08
d
yr
n .2839946377082395 1.7981e-09 deg/d
Q 2.448594491778715 1.0335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1185  
   data-arc span      23597 days (64.61 yr)  
   first obs. used      1955-03-22  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54012  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:43:53  

Additional Information
 Earth MOID = 1.15691 au 
 Jupiter MOID = 2.54246 au 
 T_jup = 3.581 
[ 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 15.1   n/a MPO493212  
diameter diameter 3.423 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.137   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49842 (1999 XS90)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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