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15055 (1998 YS9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2015055
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355906759492054 4.0921e-08  
a 3.210696122694754 1.8288e-08 au
q 2.775355665151079 1.3354e-07 au
i 3.013847637301264 3.9382e-06 deg
node 137.2654634863052 8.9677e-05 deg
peri 18.87827602888532 9.0951e-05 deg
M 259.4603711415586 1.6802e-05 deg
tp 2459787.356621610156
(2022-Jul-26.85662161)
0.00010052 TDB
period 2101.344377122375
5.75
1.7954e-05
4.916e-08
d
yr
n .1713188965689629 1.4637e-09 deg/d
Q 3.646036580238428 2.0768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1193  
   data-arc span      8944 days (24.49 yr)  
   first obs. used      1996-09-10  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:46:19  

Additional Information
 Earth MOID = 1.78512 au 
 Jupiter MOID = 1.34091 au 
 T_jup = 3.175 
[ 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 13.99   n/a E2021B10  
diameter diameter 8.424 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.090   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15055 (1998 YS9)          Discovered 1998-Dec-25 by Korlevic, K., Juric, M. at Visnjan
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YS9 = 1996 RY26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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