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66186 (1998 XS49)
Classification: Main-belt Asteroid          SPK-ID: 2066186
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1818186666485493 6.5008e-08  
a 2.571822220474051 1.5848e-08 au
q 2.104216933490347 1.6983e-07 au
i 12.59986892394998 5.627e-06 deg
node 335.871187147781 1.3414e-05 deg
peri 12.75302999969563 1.6115e-05 deg
M 202.162120134283 8.1493e-06 deg
tp 2459860.993550496760
(2022-Oct-08.49355050)
3.4953e-05 TDB
period 1506.467765413008
4.12
1.3924e-05
3.812e-08
d
yr
n .2389696004556086 2.2088e-09 deg/d
Q 3.039427507457754 1.8729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1606  
   data-arc span      11530 days (31.57 yr)  
   first obs. used      1989-08-28  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47272  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:01:03  

Additional Information
 Earth MOID = 1.09703 au 
 Jupiter MOID = 2.38276 au 
 T_jup = 3.373 
[ 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 14.28   n/a E2021B10  
diameter diameter 3.984 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.255   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

66186 (1998 XS49)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XS49 = 1989 QY = 1989 RS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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