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66191 (1998 YS6)
Classification: Main-belt Asteroid          SPK-ID: 2066191
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16055608588441 3.0349e-08  
a 3.110091743878499 1.525e-08 au
q 2.610747586739949 9.904e-08 au
i .1462173977041822 3.1738e-06 deg
node 214.7658417812259 0.0014055 deg
peri 164.7130757024354 0.0014056 deg
M 50.17164375648721 1.0607e-05 deg
tp 2458921.300872641618
(2020-Mar-12.80087264)
5.8955e-05 TDB
period 2003.356444466127
5.48
1.4735e-05
4.034e-08
d
yr
n .1796984261060623 1.3217e-09 deg/d
Q 3.609435901017049 1.7699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2025  
   data-arc span      9913 days (27.14 yr)  
   first obs. used      1994-01-18  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:07  

Additional Information
 Earth MOID = 1.61174 au 
 Jupiter MOID = 1.85414 au 
 T_jup = 3.199 
[ 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 13.83   n/a E2021B10  
diameter diameter 10.522 km 0.258 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.19 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.058   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66191 (1998 YS6)          Discovered 1998-Dec-19 by Kawasato, N. at Uenohara
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YS6 = 2000 CK77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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