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118321 (1998 XS12)
Classification: Main-belt Asteroid          SPK-ID: 2118321
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118080093039465 5.8959e-08  
a 2.33106786248558 1.0268e-08 au
q 2.055815152401976 1.3963e-07 au
i 7.641705955633817 3.8849e-06 deg
node 89.11536895806272 4.8671e-05 deg
peri 299.8071891727709 5.3325e-05 deg
M 101.0959318529988 2.0631e-05 deg
tp 2458835.441906583728
(2019-Dec-17.94190658)
7.4343e-05 TDB
period 1299.96243390836
3.56
8.5893e-06
2.352e-08
d
yr
n .2769310793986973 1.8298e-09 deg/d
Q 2.606320572569184 1.1481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      8121 days (22.23 yr)  
   first obs. used      1998-12-15  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58821  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:42  

Additional Information
 Earth MOID = 1.07293 au 
 Jupiter MOID = 2.80804 au 
 T_jup = 3.550 
[ 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 16.2   n/a MPO396012  

118321 (1998 XS12)          Discovered 1998-Dec-15 by Korlevic, K. at Visnjan
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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Alternate Designations
 1998 XS12 = 2001 OU64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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