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49028 (1998 QM99)
Classification: Main-belt Asteroid          SPK-ID: 2049028
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2990350313021299 4.6046e-08  
a 2.418352517390745 7.489e-09 au
q 1.695180396653218 1.1082e-07 au
i 7.85237047388833 5.5051e-06 deg
node 357.5098827895699 2.5559e-05 deg
peri 328.2984104615348 2.6434e-05 deg
M 291.7116343326822 7.8477e-06 deg
tp 2459261.068585766326
(2021-Feb-15.56858577)
3.0629e-05 TDB
period 1373.655526226357
3.76
6.3808e-06
1.747e-08
d
yr
n .2620744379698857 1.2174e-09 deg/d
Q 3.141524638128271 9.7285e-09 au
  Orbit Determination Parameters
   # obs. used (total)      940  
   data-arc span      13049 days (35.73 yr)  
   first obs. used      1983-07-13  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57574  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:55  

Additional Information
 Earth MOID = .689971 au 
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456650.5 (2013-Dec-24.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2986969725217414 4.5931e-08  
q 1.696044075430208 1.1043e-07 au
tp 2456509.492240177789
(2013-Aug-04.99224018)
2.503e-05 TDB
node 357.6330494654763 2.5656e-05 deg
peri 327.6353510059795 2.6511e-05 deg
i 7.83941967138067 5.4931e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      940  
   data-arc span      13049 days (35.73 yr)  
   first obs. used      1983-07-13  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57574  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:55  

Additional Information
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.10961245010416E-15 -5.066463608960522E-15 5.382237527127887E-13 -1.383554212482527E-14 1.254935007794167E-13 -5.434895664415841E-15
q -5.066463608960522E-15 1.219534589212556E-14 -1.269091153716493E-12 3.324290987598184E-14 -2.955598030304633E-13 1.307499375763501E-14
tp 5.382237527127887E-13 -1.269091153716493E-12 6.264935625903131E-10 -2.183291426424984E-12 1.737328813987662E-10 -3.420161247797318E-12
node -1.383554212482527E-14 3.324290987598184E-14 -2.183291426424984E-12 6.582064025915381E-10 -6.521338777642336E-10 -4.1631694419332E-12
peri 1.254935007794167E-13 -2.955598030304633E-13 1.737328813987662E-10 -6.521338777642336E-10 7.028303624361602E-10 3.119790405719198E-12
i -5.434895664415841E-15 1.307499375763501E-14 -3.420161247797318E-12 -4.1631694419332E-12 3.119790405719198E-12 3.017383024803376E-11

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 15.0   n/a MPO436126  

49028 (1998 QM99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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