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91211 (1998 YJ2)
Classification: Main-belt Asteroid          SPK-ID: 2091211
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .07843734753362007 4.6145e-08  
a 2.27600923534368 8.9804e-09 au
q 2.097485107961299 1.0533e-07 au
i 5.869688893806013 3.9941e-06 deg
node 312.2943586638608 4.9101e-05 deg
peri 279.7772371672078 5.7574e-05 deg
M 346.6132465645319 2.9794e-05 deg
tp 2459047.137173371527
(2020-Jul-16.63717337)
0.00010373 TDB
period 1254.178804045674
3.43
7.4229e-06
2.032e-08
d
yr
n .2870404114937425 1.6989e-09 deg/d
Q 2.454533362726061 9.6848e-09 au
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      7846 days (21.48 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58656  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:38:33  

Additional Information
 Earth MOID = 1.09594 au 
 Jupiter MOID = 2.56037 au 
 T_jup = 3.598 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO453351  

91211 (1998 YJ2)          Discovered 1998-Dec-17 by ODAS at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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