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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2990349858072711 4.0036e-08  
a 2.418352513911459 7.1424e-09 au
q 1.695180504236967 9.7055e-08 au
i 7.852370731129423 5.2276e-06 deg
node 357.5099083752791 2.4382e-05 deg
peri 328.2983901229534 2.5347e-05 deg
M 291.7116361328267 7.5474e-06 deg
tp 2459261.068578335176
(2021-Feb-15.56857833)
2.9408e-05 TDB
period 1373.655523261938
3.76
6.0855e-06
1.666e-08
d
yr
n .2620744385354557 1.161e-09 deg/d
Q 3.141524523585951 9.2782e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1014  
   data-arc span      13439 days (36.79 yr)  
   first obs. used      1983-07-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:50:37  

Additional Information
 Earth MOID = .689972 au 
 Jupiter MOID = 2.23561 au 
 T_jup = 3.441 
[ 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 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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