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JPL Small-Body Database Browser
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74118 (1998 QS50)
Classification: Main-belt Asteroid          SPK-ID: 2074118
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2481375552782635 3.5569e-08  
a 2.692516043683673 1.5903e-08 au
q 2.024401695056504 9.8405e-08 au
i 5.38806415596985 4.4748e-06 deg
node 135.4794882569835 5.4114e-05 deg
peri 166.8297130513001 5.5191e-05 deg
M 264.5667248857486 1.3463e-05 deg
tp 2459028.292537247884
(2020-Jun-27.79253725)
6.273e-05 TDB
period 1613.748592667132
4.42
1.4297e-05
3.914e-08
d
yr
n .2230830760354114 1.9764e-09 deg/d
Q 3.360630392310841 1.9849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      863  
   data-arc span      8528 days (23.35 yr)  
   first obs. used      1995-12-18  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55666  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:02:12  

Additional Information
 Earth MOID = 1.00875 au 
 Jupiter MOID = 1.89646 au 
 T_jup = 3.320 
[ 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 14.8   n/a MPO436301  
diameter diameter 6.365 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74118 (1998 QS50)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QS50 = 2001 DK11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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