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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456750.5 (2014-Apr-03.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09954583560936703 2.761e-08  
q 2.094601283149617 6.4532e-08 au
tp 2456649.698291769285
(2013-Dec-23.19829177)
6.3229e-05 TDB
node 74.21978479060964 3.017e-05 deg
peri 108.3195440902853 3.4838e-05 deg
i 5.707571327845148 3.4623e-06 deg
  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
 Jupiter MOID = 2.4104 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.623035636510391E-16 -1.773092110212314E-15 1.402608159791684E-13 1.540930974403344E-15 4.724413890538878E-14 -8.697688001323201E-17
q -1.773092110212314E-15 4.164355457553833E-15 -2.588844885415952E-13 -3.972418658760673E-15 -9.053940487836845E-14 2.892583402716984E-16
tp 1.402608159791684E-13 -2.588844885415952E-13 3.997948043273566E-9 -3.52491638345178E-13 1.10868552284534E-9 1.777504087892765E-12
node 1.540930974403344E-15 -3.972418658760673E-15 -3.52491638345178E-13 9.102008067524461E-10 -9.055194959905569E-10 -5.426137349129746E-12
peri 4.724413890538878E-14 -9.053940487836845E-14 1.10868552284534E-9 -9.055194959905569E-10 1.213713135662673E-9 5.874388438800815E-12
i -8.697688001323201E-17 2.892583402716984E-16 1.777504087892765E-12 -5.426137349129746E-12 5.874388438800815E-12 1.198777928258719E-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 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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