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101533 (1998 YK9)
Classification: Main-belt Asteroid          SPK-ID: 2101533
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2944422687953216 6.0996e-08  
a 3.043672068669379 1.517e-08 au
q 2.147486359301417 1.8907e-07 au
i 1.431078107299866 6.4573e-06 deg
node 249.2493616323197 0.00026437 deg
peri 169.236016810864 0.00026466 deg
M 30.27969477166084 9.5571e-06 deg
tp 2458837.366104301067
(2019-Dec-19.86610430)
5.1108e-05 TDB
period 1939.524255263643
5.31
1.45e-05
3.97e-08
d
yr
n .1856125279294662 1.3877e-09 deg/d
Q 3.93985777803734 1.9637e-08 au
  Orbit Determination Parameters
   # obs. used (total)      488  
   data-arc span      8302 days (22.73 yr)  
   first obs. used      1997-07-11  
   last obs. used      2020-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:01  

Additional Information
 Earth MOID = 1.15989 au 
 Jupiter MOID = 1.42697 au 
 T_jup = 3.171 
[ 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 15.8   n/a MPO502726  
diameter diameter 3.991 km 0.747 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101533 (1998 YK9)          Discovered 1998-Dec-26 by Comba, P. G. at Prescott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 YK9 = 2003 UN15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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