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74117 (1998 QG50)
Classification: Main-belt Asteroid          SPK-ID: 2074117
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2010077132305701 6.4292e-08  
a 2.625919536889458 1.5173e-08 au
q 2.09808945565183 1.702e-07 au
i 13.60665493714027 6.3247e-06 deg
node 353.400901788741 1.9286e-05 deg
peri 338.81110825 2.1825e-05 deg
M 46.33346653834524 1.0601e-05 deg
tp 2458800.461844333878
(2019-Nov-12.96184433)
4.5127e-05 TDB
period 1554.248827469146
4.26
1.3471e-05
3.688e-08
d
yr
n .2316231440149801 2.0076e-09 deg/d
Q 3.153749618127085 1.8223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      10108 days (27.67 yr)  
   first obs. used      1992-02-23  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44752  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:10  

Additional Information
 Earth MOID = 1.09441 au 
 Jupiter MOID = 2.2578 au 
 T_jup = 3.334 
[ 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 14.9   n/a MPO436301  
diameter diameter 4.710 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.105   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74117 (1998 QG50)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QG50 = 1993 LZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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