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JPL Small-Body Database Browser
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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2990349933955729 4.5819e-08  
a 2.418352514658785 7.4741e-09 au
q 1.695180486409628 1.1027e-07 au
i 7.852373389330121 5.4892e-06 deg
node 357.5098963258469 2.5466e-05 deg
peri 328.2984019091602 2.634e-05 deg
M 291.7116355271833 7.8385e-06 deg
tp 2459261.068580766918
(2021-Feb-15.56858077)
3.0593e-05 TDB
period 1373.655523898673
3.76
6.3681e-06
1.743e-08
d
yr
n .2620744384139754 1.2149e-09 deg/d
Q 3.141524542907941 9.7092e-09 au
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      13350 days (36.55 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:18:36  

Additional Information
 Earth MOID = .689972 au 
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456671.5 (2014-Jan-14.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2986882444181967 4.5705e-08  
q 1.696055862138124 1.0988e-07 au
tp 2456509.492462036377
(2013-Aug-04.99246204)
2.5e-05 TDB
node 357.633047868171 2.5562e-05 deg
peri 327.6360516888273 2.6417e-05 deg
i 7.839420165423209 5.4771e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      13350 days (36.55 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:18:36  

Additional Information
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.088966247917606E-15 -5.016433641990453E-15 5.35402007877675E-13 -1.360621209416527E-14 1.248338080769396E-13 -5.403977497419063E-15
q -5.016433641990453E-15 1.207400905082044E-14 -1.262245719765236E-12 3.272355289273487E-14 -2.939050324793517E-13 1.299219728404644E-14
tp 5.35402007877675E-13 -1.262245719765236E-12 6.249893041730589E-10 -2.065097208433827E-12 1.731231652539028E-10 -3.418732339257541E-12
node -1.360621209416527E-14 3.272355289273487E-14 -2.065097208433827E-12 6.534055944795598E-10 -6.47353956487246E-10 -3.811245498745307E-12
peri 1.248338080769396E-13 -2.939050324793517E-13 1.731231652539028E-10 -6.47353956487246E-10 6.978418504331255E-10 2.772624562165891E-12
i -5.403977497419063E-15 1.299219728404644E-14 -3.418732339257541E-12 -3.811245498745307E-12 2.772624562165891E-12 2.999870029608447E-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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