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JPL Small-Body Database Browser
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80354 (1999 XJ121)
Classification: Main-belt Asteroid          SPK-ID: 2080354
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804265200192109 3.6243e-08  
a 2.359039992037461 1.0511e-08 au
q 1.933406615687995 8.7122e-08 au
i 1.971792313531381 4.5872e-06 deg
node 317.5866978779012 0.00017622 deg
peri 141.5531391686966 0.00017756 deg
M 104.3616573079974 2.1052e-05 deg
tp 2458216.845895821832
(2018-Apr-08.34589582)
7.6728e-05 TDB
period 1323.431239660434
3.62
8.8447e-06
2.422e-08
d
yr
n .2720201769548442 1.818e-09 deg/d
Q 2.784673368386927 1.2407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      547  
   data-arc span      8064 days (22.08 yr)  
   first obs. used      1997-04-05  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:49:35  

Additional Information
 Earth MOID = .950864 au 
 Jupiter MOID = 2.37363 au 
 T_jup = 3.529 
[ 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 16.2   n/a MPO432352  

80354 (1999 XJ121)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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