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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2945304357527516 5.6952e-08  
a 3.04360159518392 1.4443e-08 au
q 2.14716829109663 1.7572e-07 au
i 1.430987164600439 5.4695e-06 deg
node 249.2412631264467 0.00026314 deg
peri 169.223566887084 0.00026338 deg
M 67.41013898073624 9.6042e-06 deg
tp 2458837.335947903681
(2019-Dec-19.83594790)
5.0758e-05 TDB
period 1939.456893747631
5.31
1.3805e-05
3.78e-08
d
yr
n .1856189746524186 1.3212e-09 deg/d
Q 3.94003489927121 1.8697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      8646 days (23.67 yr)  
   first obs. used      1997-07-11  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:14  

Additional Information
 Earth MOID = 1.15887 au 
 Jupiter MOID = 1.42776 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 15.91   n/a E2021B55  
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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