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JPL Small-Body Database Browser
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56198 (1999 GB9)
Classification: Main-belt Asteroid          SPK-ID: 2056198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379557104225396 4.0016e-08  
a 2.691815891839247 1.487e-08 au
q 2.320464518153882 1.1026e-07 au
i 12.59874509819233 4.783e-06 deg
node 196.6828955289082 1.7864e-05 deg
peri 48.07830323052592 2.5914e-05 deg
M 171.4965267050372 2.2506e-05 deg
tp 2457832.043507811869
(2017-Mar-19.54350781)
9.7464e-05 TDB
period 1613.119183827772
4.42
1.3367e-05
3.66e-08
d
yr
n .2231701188660813 1.8493e-09 deg/d
Q 3.063167265524613 1.6922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1201  
   data-arc span      7544 days (20.65 yr)  
   first obs. used      1999-04-10  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54447  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:41:57  

Additional Information
 Earth MOID = 1.32924 au 
 Jupiter MOID = 1.97726 au 
 T_jup = 3.323 
[ 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 14.3   n/a MPO459236  

56198 (1999 GB9)          Discovered 1999-Apr-10 by LONEOS at Anderson Mesa
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GB9 = 2000 QU118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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