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541021 (2017 YK9)
Classification: Main-belt Asteroid          SPK-ID: 2541021
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2186101245124125 1.579e-07  
a 2.454327894447796 3.7091e-08 au
q 1.917786967848276 3.6623e-07 au
i 5.623978565235525 5.5213e-06 deg
node 128.2240514055487 9.0704e-05 deg
peri 275.8415177302019 9.1576e-05 deg
M 302.3124213911625 1.367e-05 deg
tp 2459425.549012326084
(2021-Jul-30.04901233)
5.5938e-05 TDB
period 1404.420958396384
3.85
3.1836e-05
8.716e-08
d
yr
n .2563334005005596 5.8108e-09 deg/d
Q 2.990868821047315 4.5199e-08 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      5939 days (16.26 yr)  
   first obs. used      2003-02-02  
   last obs. used      2019-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .72373  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:21:51  

Additional Information
 Earth MOID = .935701 au 
 Jupiter MOID = 2.43249 au 
 T_jup = 3.454 
[ 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 17.38   n/a MPCxxxxx  

541021 (2017 YK9)          Discovered 2009-Sep-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-05-29

Alternate Designations
 2017 YK9 = 2003 CH27 = 2009 SB281 = 2013 XR4 = 2015 FS250 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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