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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352005404745824 3.7784e-08  
a 2.619557851840864 1.1807e-08 au
q 2.265392214467544 1.0116e-07 au
i 12.23606343008232 4.749e-06 deg
node 251.9253208862149 1.8033e-05 deg
peri 277.3615713490723 2.5442e-05 deg
M 298.0486597633012 1.9382e-05 deg
tp 2459266.994728957147
(2021-Feb-21.49472896)
8.3799e-05 TDB
period 1548.6041473521
4.24
1.047e-05
2.867e-08
d
yr
n .2324674130671485 1.5717e-09 deg/d
Q 2.973723489214185 1.3404e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      14222 days (38.94 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49423  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:59:56  

Additional Information
 Earth MOID = 1.30932 au 
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457078.5 (2015-Feb-25.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352100355292956 3.7968e-08  
q 2.265060509386866 1.0167e-07 au
tp 2457720.574566806617
(2016-Nov-28.07456681)
8.1584e-05 TDB
node 251.9668713307605 1.8051e-05 deg
peri 277.7210487317474 2.5395e-05 deg
i 12.22997761282565 4.747e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      14222 days (38.94 yr)  
   first obs. used      1981-12-04  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49423  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:59:56  

Additional Information
 Jupiter MOID = 2.16549 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.441604498198316E-15 -3.841396608098973E-15 5.481355080195275E-13 -4.487215351525202E-15 1.786134195742359E-13 2.890046467022136E-15
q -3.841396608098973E-15 1.03374925453864E-14 -1.342147242652101E-12 1.231436894347108E-14 -4.612526189654435E-13 -7.313574082045535E-15
tp 5.481355080195275E-13 -1.342147242652101E-12 6.655870090037027E-9 6.387170159623231E-13 1.465119119509987E-9 -2.15617159267178E-12
node -4.487215351525202E-15 1.231436894347108E-14 6.387170159623231E-13 3.258414893610427E-10 -3.180294535773505E-10 -2.322651656704828E-11
peri 1.786134195742359E-13 -4.612526189654435E-13 1.465119119509987E-9 -3.180294535773505E-10 6.448827401857367E-10 2.231626671096971E-11
i 2.890046467022136E-15 -7.313574082045535E-15 -2.15617159267178E-12 -2.322651656704828E-11 2.231626671096971E-11 2.25344660718825E-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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