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15451 (1998 XK42)
Classification: Main-belt Asteroid          SPK-ID: 2015451
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05689637377616668 2.5481e-08  
a 3.009724626419668 1.687e-08 au
q 2.83848220911156 7.9468e-08 au
i 11.21787016878412 2.5597e-07 deg
node 77.44218422887811 3.1879e-06 deg
peri 177.0975932319141 1.2299e-05 deg
M 277.70052648538 1.2833e-05 deg
tp 2459636.496623306137
(2022-Feb-25.99662331)
6.7916e-05 TDB
period 1907.166324245397
5.22
1.6035e-05
4.39e-08
d
yr
n .1887617222595623 1.587e-09 deg/d
Q 3.180967043727775 1.7829e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      13092 days (35.84 yr)  
   first obs. used      1985-05-11  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:58:52  

Additional Information
 Earth MOID = 1.82204 au 
 Jupiter MOID = 1.85808 au 
 T_jup = 3.218 
[ 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 12.55   n/a E2021B10  
diameter diameter 10.956 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 38.851 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.177   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15451 (1998 XK42)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 XK42 = 1985 JM1 = 2000 FP31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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