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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058253776099357 6.1118e-08  
a 2.277954280691086 1.0076e-08 au
q 2.036888908758783 1.3533e-07 au
i 5.115085607520499 4.0915e-06 deg
node 313.8840100943106 6.5215e-05 deg
peri 248.4238433545967 6.9716e-05 deg
M 77.52197157251142 2.2232e-05 deg
tp 2458930.080353618334
(2020-Mar-21.58035362)
7.7764e-05 TDB
period 1255.78685271621
3.44
8.3318e-06
2.281e-08
d
yr
n .2866728531369286 1.902e-09 deg/d
Q 2.51901965262339 1.1142e-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 = 1.03983 au 
 Jupiter MOID = 2.46294 au 
 T_jup = 3.595 
[ 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 16.35   n/a E2021B55  

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

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