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15520 (1999 XK98)
Classification: Main-belt Asteroid          SPK-ID: 2015520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283968754486983 3.4818e-08  
a 2.654424762290818 1.0741e-08 au
q 2.313604916699024 9.2298e-08 au
i 11.69176983023259 3.5646e-06 deg
node 263.0290479574414 1.9132e-05 deg
peri 322.4111914739477 2.4202e-05 deg
M 130.8455204891914 1.6511e-05 deg
tp 2458426.369769026030
(2018-Nov-03.86976903)
7.1361e-05 TDB
period 1579.625212830292
4.32
9.5877e-06
2.625e-08
d
yr
n .2279021612696156 1.3833e-09 deg/d
Q 2.995244607882613 1.212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2319  
   data-arc span      14738 days (40.35 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:00:10  

Additional Information
 Earth MOID = 1.31411 au 
 Jupiter MOID = 2.06863 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457137.5 (2015-Apr-25.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1274937787277022 3.4883e-08  
q 2.31729935357716 9.2463e-08 au
tp 2456846.879355476264
(2014-Jul-08.37935548)
6.9688e-05 TDB
node 263.0614410794172 1.9142e-05 deg
peri 322.7585667082696 2.4261e-05 deg
i 11.68579918783071 3.5633e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2319  
   data-arc span      14738 days (40.35 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:00:10  

Additional Information
 Jupiter MOID = 2.06863 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.216810389631388E-15 -3.208749252149635E-15 -1.116140363241302E-14 3.603681547797048E-15 -3.479664951670036E-14 1.901281546247269E-15
q -3.208749252149635E-15 8.549370255646556E-15 1.268056248452663E-13 -1.019288870035619E-14 1.162695388635842E-13 -5.109011753705343E-15
tp -1.116140363241302E-14 1.268056248452663E-13 4.856396284181936E-9 -6.558524914159314E-13 1.055400537055631E-9 -1.542880365079553E-12
node 3.603681547797048E-15 -1.019288870035619E-14 -6.558524914159314E-13 3.664161547073807E-10 -3.589648401102886E-10 -6.702537912894659E-12
peri -3.479664951670036E-14 1.162695388635842E-13 1.055400537055631E-9 -3.589648401102886E-10 5.886006340430612E-10 6.163909954010274E-12
i 1.901281546247269E-15 -5.109011753705343E-15 -1.542880365079553E-12 -6.702537912894659E-12 6.163909954010274E-12 1.269735358501013E-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 12.7   n/a MPO350926  
diameter diameter 8.641 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.7904 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Clark, M. (2016) Minor Planet Bull. 43, 132-135.]
geometric albedo albedo 0.237   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

15520 (1999 XK98)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
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
2130-Jan-14 09:36 00:01 Europ 0.0250723424237273 0.0250639345816254 0.0250807620988007 5.91166157741796 5.91166150571003 2499039.900047069 1.00202245121645 957.599152672925 29.9500821782998 64.080626665954 112610.83175527 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 03:00:16 2020-Dec-18 03:00

Alternate Designations
 1999 XK98 = 1990 VX11 = 1993 MM = 1998 QF90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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