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15449 (1998 XS30)
Classification: Main-belt Asteroid          SPK-ID: 2015449
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352005410142573 3.7801e-08  
a 2.61955785194899 1.1883e-08 au
q 2.265392213147341 1.0118e-07 au
i 12.23606361151602 4.781e-06 deg
node 251.9253204684779 1.8082e-05 deg
peri 277.36157202954 2.5633e-05 deg
M 298.0486594337422 1.9705e-05 deg
tp 2459266.994730391303
(2021-Feb-21.49473039)		 8.5218e-05 TDB
period 1548.60414744798
4.24		 1.0538e-05
2.885e-08		 d
yr
n .2324674130527555 1.5818e-09 deg/d
Q 2.973723490750639 1.349e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1693  
   data-arc span      14171 days (38.80 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:40:17  

Additional Information
 Earth MOID = 1.30932 au 
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457050.5 (2015-Jan-28.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1351833982718033 3.7986e-08  
q 2.26519122400465 1.0169e-07 au
tp 2457720.574241177828
(2016-Nov-28.07424118)		 8.284e-05 TDB
node 251.9678089776226 1.8101e-05 deg
peri 277.7141817214415 2.5588e-05 deg
i 12.22986764448071 4.7789e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1693  
   data-arc span      14171 days (38.80 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:40:17  

Additional Information
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.442915085615084E-15 -3.843692097651535E-15 5.642929948728227E-13 -4.455273132043492E-15 1.818018245727707E-13 2.873176703945428E-15
q -3.843692097651535E-15 1.03418689842722E-14 -1.368206142397587E-12 1.224738331030643E-14 -4.663918369954707E-13 -7.27918198974534E-15
tp 5.642929948728227E-13 -1.368206142397587E-12 6.862483580467617E-9 7.848591187791528E-13 1.506134516704214E-9 -2.262367614163265E-12
node -4.455273132043492E-15 1.224738331030643E-14 7.848591187791528E-13 3.276307326754931E-10 -3.197498344266972E-10 -2.395967107231376E-11
peri 1.818018245727707E-13 -4.663918369954707E-13 1.506134516704214E-9 -3.197498344266972E-10 6.54735362021124E-10 2.301173763094335E-11
i 2.873176703945428E-15 -7.27918198974534E-15 -2.262367614163265E-12 -2.395967107231376E-11 2.301173763094335E-11 2.28380678938864E-11

[ 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 13.8   n/a MPO452389  
diameter diameter 4.835 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.330   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15449 (1998 XS30)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 XS30 = 1981 XE1 = 1996 LE1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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