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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09439189577531655 1.8602e-08  
a 2.995081296708962 1.3211e-08 au
q 2.71236989511141 5.8542e-08 au
i 8.739866766534336 5.9228e-07 deg
node 239.3809965671173 2.3872e-06 deg
peri 143.512257014242 1.5971e-05 deg
M 356.9701091988508 1.2184e-05 deg
tp 2459216.434404048227
(2021-Jan-01.93440405)
6.406e-05 TDB
period 1893.264752375183
5.18
1.2527e-05
3.43e-08
d
yr
n .1901477326656847 1.2581e-09 deg/d
Q 3.277792698306514 1.4458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2390  
   data-arc span      13257 days (36.30 yr)  
   first obs. used      1984-10-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 01:44:14  

Additional Information
 Earth MOID = 1.72136 au 
 Jupiter MOID = 2.16298 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 12.68   n/a E2021B10  
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. 2020-October); 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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