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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0567811877478385 2.5473e-08  
a 3.009014056716937 1.5473e-08 au
q 2.838158664626607 7.926e-08 au
i 11.21821324724912 2.5574e-07 deg
node 77.43652550692181 3.1852e-06 deg
peri 177.30445941993 1.2317e-05 deg
M 314.4995221412355 1.285e-05 deg
tp 2459637.461805535244
(2022-Feb-26.96180554)
6.7984e-05 TDB
period 1906.490966137809
5.22
1.4706e-05
4.026e-08
d
yr
n .1888285894841097 1.4565e-09 deg/d
Q 3.179869448807267 1.6352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2607  
   data-arc span      13232 days (36.23 yr)  
   first obs. used      1985-05-11  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:00:28  

Additional Information
 Earth MOID = 1.82344 au 
 Jupiter MOID = 1.85816 au 
 T_jup = 3.219 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457478.5 (2016-Mar-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .057409941744168 2.5448e-08  
q 2.837126201597462 7.9175e-08 au
tp 2457721.888009731007
(2016-Nov-29.38800973)
6.8093e-05 TDB
node 77.46704939479811 3.1859e-06 deg
peri 175.6831344334495 1.2111e-05 deg
i 11.21706619255836 2.5566e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2607  
   data-arc span      13232 days (36.23 yr)  
   first obs. used      1985-05-11  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:00:28  

Additional Information
 Jupiter MOID = 1.85816 au 
 T_jup = 3.219 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.475810562407861E-16 -1.981067310616265E-15 -4.435182964288913E-13 -6.166860939443769E-15 -1.852311343871279E-14 -1.717097021959203E-16
q -1.981067310616265E-15 6.268719959299674E-15 1.107503984904221E-12 1.871017693439852E-14 6.850650067370624E-16 5.531500629537157E-16
tp -4.435182964288913E-13 1.107503984904221E-12 4.63660924777363E-9 6.039589938777846E-11 7.80480422045524E-10 2.060149908963253E-12
node -6.166860939443769E-15 1.871017693439852E-14 6.039589938777846E-11 1.014974100785252E-11 8.999168601042683E-13 3.963138527011368E-14
peri -1.852311343871279E-14 6.850650067370624E-16 7.80480422045524E-10 8.999168601042683E-13 1.466868721479739E-10 3.115160073405437E-13
i -1.717097021959203E-16 5.531500629537157E-16 2.060149908963253E-12 3.963138527011368E-14 3.115160073405437E-13 6.536315541495748E-14

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 12.58   n/a MPO636296  
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

[ show close-approach data ]
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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