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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1351189726469708 1.8304e-08  
a 2.619542062311717 1.0473e-08 au
q 2.265592230046631 4.9241e-08 au
i 12.23518654317158 9.5611e-07 deg
node 251.9210441116101 1.9247e-06 deg
peri 277.3311464068729 8.5554e-06 deg
M 344.5645185563291 9.2528e-06 deg
tp 2459266.897873503679
(2021-Feb-21.39787350)
3.9828e-05 TDB
period 1548.590145928085
4.24
9.2874e-06
2.543e-08
d
yr
n .2324695148981776 1.3942e-09 deg/d
Q 2.973491894576803 1.1889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2030  
   data-arc span      14347 days (39.28 yr)  
   first obs. used      1981-12-04  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:58:48  

Additional Information
 Earth MOID = 1.30916 au 
 Jupiter MOID = 2.1647 au 
 T_jup = 3.360 
[ show covariance matrix ]

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 13.82   n/a E2021B10  
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 39 CATAB v2.0f-lin.ifort 2021-Apr-13 00:59:38 2021-Apr-13 00:59

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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