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JPL Small-Body Database Browser
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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283968768386997 3.4863e-08  
a 2.65442476740988 1.2013e-08 au
q 2.31360491747116 9.234e-08 au
i 11.69177104083338 4.2174e-06 deg
node 263.0290522372422 2.1385e-05 deg
peri 322.4111760305818 2.8403e-05 deg
M 130.8455289610598 1.867e-05 deg
tp 2458426.369730191944
(2018-Nov-03.86973019)		 8.1801e-05 TDB
period 1579.625217399756
4.32		 1.0724e-05
2.936e-08		 d
yr
n .2279021606103512 1.5472e-09 deg/d
Q 2.9952446173486 1.3556e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1931  
   data-arc span      14422 days (39.49 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:20:29  

Additional Information
 Earth MOID = 1.31411 au 
 Jupiter MOID = 2.06863 au 
 T_jup = 3.348 
[ 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 12.7   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. 2019-August); 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

[ show close-approach data ]
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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