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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135200540248737 3.7788e-08  
a 2.619557851433961 1.1848e-08 au
q 2.265392214707269 1.0117e-07 au
i 12.23606357965627 4.7666e-06 deg
node 251.9253205515694 1.8056e-05 deg
peri 277.3615708165514 2.5542e-05 deg
M 298.0486608376556 1.9556e-05 deg
tp 2459266.994724273526
(2021-Feb-21.49472427)		 8.4561e-05 TDB
period 1548.604146991276
4.24		 1.0507e-05
2.877e-08		 d
yr
n .2324674131213134 1.5772e-09 deg/d
Q 2.973723488160653 1.345e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1723  
   data-arc span      14202 days (38.88 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:33:35  

Additional Information
 Earth MOID = 1.30932 au 
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457065.5 (2015-Feb-12.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1351977780593638 3.7973e-08  
q 2.265121102459465 1.0168e-07 au
tp 2457720.573690333435
(2016-Nov-28.07369033)		 8.2256e-05 TDB
node 251.9673057371447 1.8074e-05 deg
peri 277.7177070822082 2.5495e-05 deg
i 12.22992382718913 4.7646e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1723  
   data-arc span      14202 days (38.88 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:33:35  

Additional Information
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.441942482865074E-15 -3.841834791272335E-15 5.545804574024829E-13 -4.482754384285102E-15 1.798902397571345E-13 2.885989993947269E-15
q -3.841834791272335E-15 1.03381928043346E-14 -1.350283856377236E-12 1.231110907837086E-14 -4.628719835730953E-13 -7.308285316008757E-15
tp 5.545804574024829E-13 -1.350283856377236E-12 6.766083222524657E-9 7.340487173960872E-13 1.486937931450583E-9 -2.223993515057202E-12
node -4.482754384285102E-15 1.231110907837086E-14 7.340487173960872E-13 3.266808231092257E-10 -3.188310165409406E-10 -2.360006524779505E-11
peri 1.798902397571345E-13 -4.628719835730953E-13 1.486937931450583E-9 -3.188310165409406E-10 6.500042643601764E-10 2.26678276052611E-11
i 2.885989993947269E-15 -7.308285316008757E-15 -2.223993515057202E-12 -2.360006524779505E-11 2.26678276052611E-11 2.270119719921585E-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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1994-Nov-11 21:58 < 00:01 Vesta 0.0309345203077136 0.0309337877468337 0.0309352528698703 6.40985375440072 6.40985315432908 2449668.414959856 0.636022029506922 152.239571940733 36.3893539142908 89.0552250966093 126941.919389936 T 34 CATAB v2.0f-lin.ifort 2020-Nov-13 02:33:40 2020-Nov-13 02:33

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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