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15989 (1998 XK39)
Classification: Main-belt Asteroid          SPK-ID: 2015989
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09954956939140061 1.6673e-08  
a 2.325985578635694 5.4495e-09 au
q 2.094434715871903 3.9274e-08 au
i 5.708154826862591 2.6014e-07 deg
node 74.18942883533477 9.4344e-06 deg
peri 108.1308257313308 1.2478e-05 deg
M 43.19601136342664 7.6766e-06 deg
tp 2459241.028746739485
(2021-Jan-26.52874674)		 2.7492e-05 TDB
period 1295.71340980742
3.55		 4.5535e-06
1.247e-08		 d
yr
n .2778392175886382 9.7641e-10 deg/d
Q 2.557536441399485 5.992e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2533  
   data-arc span      23436 days (64.16 yr)  
   first obs. used      1957-04-28  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:00:19  

Additional Information
 Earth MOID = 1.10535 au 
 Jupiter MOID = 2.40963 au 
 T_jup = 3.561 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.03   n/a MPO614063  
diameter diameter 3.727 km 0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.609   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15989 (1998 XK39)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XK39 = 1989 HH 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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