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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2990349902130615 3.5704e-08  
a 2.418352514395434 6.9298e-09 au
q 1.695180493921463 8.721e-08 au
i 7.852366865174532 4.8112e-06 deg
node 357.5099204020007 2.3524e-05 deg
peri 328.298378620796 2.4592e-05 deg
M 291.7116353993141 7.3492e-06 deg
tp 2459261.068581212267
(2021-Feb-15.56858121)
2.8603e-05 TDB
period 1373.655523674294
3.76
5.9043e-06
1.617e-08
d
yr
n .2620744384567839 1.1265e-09 deg/d
Q 3.141524534869406 9.0021e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      13483 days (36.91 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55553  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:51:07  

Additional Information
 Earth MOID = .689972 au 
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457127.5 (2015-Apr-15.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2981502683448156 3.5551e-08  
q 1.699280902119777 8.6646e-08 au
tp 2456509.874365333412
(2013-Aug-05.37436533)
2.4474e-05 TDB
node 357.5602281861481 2.3569e-05 deg
peri 327.9430172091764 2.4632e-05 deg
i 7.843686959235557 4.8014e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      13483 days (36.91 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55553  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:51:07  

Additional Information
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.263850317669516E-15 -3.075351053985015E-15 3.778983773507596E-13 -1.266360695177579E-14 1.246946080430734E-13 -1.15584152215061E-15
q -3.075351053985015E-15 7.507478316739536E-15 -8.921014885987964E-13 2.899733202126819E-14 -2.919743204350635E-13 2.583335606449408E-15
tp 3.778983773507596E-13 -8.921014885987964E-13 5.989850910144729E-10 -8.324330266799086E-12 1.805598665527959E-10 -1.04159212762491E-12
node -1.266360695177579E-14 2.899733202126819E-14 -8.324330266799086E-12 5.554960649858895E-10 -5.527768695903878E-10 2.137171565240176E-11
peri 1.246946080430734E-13 -2.919743204350635E-13 1.805598665527959E-10 -5.527768695903878E-10 6.067376701836475E-10 -2.160215751228026E-11
i -1.15584152215061E-15 2.583335606449408E-15 -1.04159212762491E-12 2.137171565240176E-11 -2.160215751228026E-11 2.305355420338012E-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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