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20385 (1998 KS53)
Classification: Main-belt Asteroid          SPK-ID: 2020385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1308783932091271 3.6396e-08  
a 2.777993952598198 1.4065e-08 au
q 2.414414567737474 1.0108e-07 au
i 9.891973471012559 4.3097e-06 deg
node 133.8833436031042 1.958e-05 deg
peri 160.0689933630213 2.3991e-05 deg
M 276.8328875602424 1.486e-05 deg
tp 2459591.200973310926
(2022-Jan-11.70097331)
7.0681e-05 TDB
period 1691.201561119674
4.63
1.2844e-05
3.516e-08
d
yr
n .2128664071015043 1.6166e-09 deg/d
Q 3.141573337458923 1.5906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      9713 days (26.59 yr)  
   first obs. used      1994-08-11  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46389  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:04  

Additional Information
 Earth MOID = 1.39915 au 
 Jupiter MOID = 2.08646 au 
 T_jup = 3.300 
[ 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 13.94   n/a E2021B10  
diameter diameter 6.115 km 0.484 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.03663 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.143   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20385 (1998 KS53)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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