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216890 (2008 YL91)
Classification: Main-belt Asteroid          SPK-ID: 2216890
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0922043815986901 4.9811e-08  
a 2.807073386297084 3.3371e-08 au
q 2.54824892061142 1.5151e-07 au
i 7.633689332615047 6.7392e-06 deg
node 286.3913346023461 4.9186e-05 deg
peri 299.3530154326626 6.5549e-05 deg
M 87.0496671434976 4.1416e-05 deg
tp 2458785.121808666624
(2019-Oct-28.62180867)
0.00019857 TDB
period 1717.825625151574
4.70
3.0633e-05
8.387e-08
d
yr
n .2095672545158563 3.7371e-09 deg/d
Q 3.065897851982748 3.6448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      6063 days (16.60 yr)  
   first obs. used      2002-09-03  
   last obs. used      2019-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61178  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:41  

Additional Information
 Earth MOID = 1.54744 au 
 Jupiter MOID = 1.993 au 
 T_jup = 3.303 
[ 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 15.87   n/a MPCxxxxx  

216890 (2008 YL91)          Discovered 2008-Dec-29 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2008 YL91 = 2006 OG8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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