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17864 (1998 KK38)
Classification: Main-belt Asteroid          SPK-ID: 2017864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09452214431365276 5.4137e-08  
a 2.995776345077476 1.8716e-08 au
q 2.712609141056636 1.6334e-07 au
i 8.739557878757356 5.3588e-06 deg
node 239.3861053996546 3.2266e-05 deg
peri 143.3674772669426 4.0751e-05 deg
M 319.0704004221934 2.5061e-05 deg
tp 2459215.826510685217
(2021-Jan-01.32651069)
0.00013239 TDB
period 1893.923826430749
5.19
1.7748e-05
4.859e-08
d
yr
n .1900815624028812 1.7813e-09 deg/d
Q 3.278943549098317 2.0485e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1755  
   data-arc span      13018 days (35.64 yr)  
   first obs. used      1984-10-26  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:16:28  

Additional Information
 Earth MOID = 1.72283 au 
 Jupiter MOID = 2.16159 au 
 T_jup = 3.230 
[ 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 12.6   n/a MPO358803  
diameter diameter 10.007 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.56 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2006) Minor Planet Bull. 33, 39-41.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.148   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17864 (1998 KK38)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KK38 = 1984 UW2 = 1999 RK121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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