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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2990349898233943 3.5592e-08  
a 2.418352514343781 6.9252e-09 au
q 1.695180494827609 8.6956e-08 au
i 7.852367217393713 4.7924e-06 deg
node 357.5099197695431 2.3516e-05 deg
peri 328.2983792442735 2.4585e-05 deg
M 291.7116354437215 7.3421e-06 deg
tp 2459261.068581034474
(2021-Feb-15.56858103)
2.8575e-05 TDB
period 1373.655523630285
3.76
5.9004e-06
1.615e-08
d
yr
n .2620744384651803 1.1257e-09 deg/d
Q 3.141524533859954 8.996e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      13541 days (37.07 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:34:37  

Additional Information
 Earth MOID = .689972 au 
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457140.5 (2015-Apr-28.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2981267540114917 3.5445e-08  
q 1.699386780937459 8.6413e-08 au
tp 2456509.906762793324
(2013-Aug-05.40676279)
2.4474e-05 TDB
node 357.5571140627105 2.3557e-05 deg
peri 327.9554188581154 2.4622e-05 deg
i 7.844166607493377 4.783e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      13541 days (37.07 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:34:37  

Additional Information
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.256339546457346E-15 -3.057949650018093E-15 3.76303660190225E-13 -1.261723727620847E-14 1.245097436157913E-13 -1.083765392696773E-15
q -3.057949650018093E-15 7.467197872890615E-15 -8.886868557160381E-13 2.883013058104605E-14 -2.91608373355523E-13 2.414456877202027E-15
tp 3.76303660190225E-13 -8.886868557160381E-13 5.989815053754115E-10 -8.420050434103506E-12 1.807016535269825E-10 -9.932488834635272E-13
node -1.261723727620847E-14 2.883013058104605E-14 -8.420050434103506E-12 5.549400656040839E-10 -5.522575773990253E-10 2.161838739378456E-11
peri 1.245097436157913E-13 -2.91608373355523E-13 1.807016535269825E-10 -5.522575773990253E-10 6.062513416012363E-10 -2.183172662467649E-11
i -1.083765392696773E-15 2.414456877202027E-15 -9.932488834635272E-13 2.161838739378456E-11 -2.183172662467649E-11 2.28768687714745E-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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