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120998 (1998 YB2)
Classification: Main-belt Asteroid          SPK-ID: 2120998
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1055797526215479 6.1083e-08  
a 2.277106685864178 1.0059e-08 au
q 2.036690325277766 1.3522e-07 au
i 5.114872960349824 4.091e-06 deg
node 313.8871099171345 6.5233e-05 deg
peri 248.2701305271158 6.9761e-05 deg
M 20.32789779113357 2.2358e-05 deg
tp 2458929.629832016066
(2020-Mar-21.12983202)		 7.8005e-05 TDB
period 1255.086026915396
3.44		 8.3163e-06
2.277e-08		 d
yr
n .2868329280063503 1.9006e-09 deg/d
Q 2.517523046450591 1.1121e-08 au
   Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      10393 days (28.45 yr)  
   first obs. used      1992-01-01  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53991  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:58:06  

Additional Information
 Earth MOID = 1.04047 au 
 Jupiter MOID = 2.46541 au 
 T_jup = 3.596 
[ 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 16.3   n/a MPO260012  

120998 (1998 YB2)          Discovered 1998-Dec-16 by ODAS at Caussols
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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