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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09981317722474052 2.7541e-08  
a 2.326516120069305 7.0529e-09 au
q 2.094299154260611 6.4404e-08 au
i 5.708215361889682 3.4632e-06 deg
node 74.19567577238168 3.0157e-05 deg
peri 108.1463722047201 3.4824e-05 deg
M 293.179537477121 1.8291e-05 deg
tp 2459241.082759855556
(2021-Jan-26.58275986)
6.6223e-05 TDB
period 1296.156750162352
3.55
5.894e-06
1.614e-08
d
yr
n .2777441848409982 1.263e-09 deg/d
Q 2.558733085877998 7.7569e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2052  
   data-arc span      23000 days (62.97 yr)  
   first obs. used      1957-04-28  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:17:50  

Additional Information
 Earth MOID = 1.10443 au 
 Jupiter MOID = 2.4104 au 
 T_jup = 3.561 
[ 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 14.0   n/a MPO502292  
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

[ show close-approach data ]
Alternate Designations
 1998 XK39 = 1989 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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