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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135627745290322 4.9436e-08  
a 3.210034493778006 2.1213e-08 au
q 2.774664753082734 1.5554e-07 au
i 3.013912630750535 5.0708e-06 deg
node 137.2676057297882 9.0785e-05 deg
peri 18.97174840415456 9.2052e-05 deg
M 225.0828846025879 1.6958e-05 deg
tp 2459787.776924168005
(2022-Jul-27.27692417)
0.00010292 TDB
period 2100.694873779654
5.75
2.0823e-05
5.701e-08
d
yr
n .1713718658018495 1.6987e-09 deg/d
Q 3.645404234473277 2.409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1996-09-10  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59923  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:53:50  

Additional Information
 Earth MOID = 1.78462 au 
 Jupiter MOID = 1.34223 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 13.9   n/a MPO412294  
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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