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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2483877258858389 3.5078e-08  
a 2.694070636326139 1.2846e-08 au
q 2.024896557593275 9.6151e-08 au
i 5.388681858105434 4.3366e-06 deg
node 135.4648409097468 4.9742e-05 deg
peri 166.7189730615653 5.064e-05 deg
M 353.8841098182023 1.0223e-05 deg
tp 2459027.939050071672
(2020-Jun-27.43905007)
4.5948e-05 TDB
period 1615.146402595827
4.42
1.1552e-05
3.163e-08
d
yr
n .2228900113459784 1.5942e-09 deg/d
Q 3.363244715059004 1.6037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      8947 days (24.50 yr)  
   first obs. used      1995-12-18  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:48:33  

Additional Information
 Earth MOID = 1.01001 au 
 Jupiter MOID = 1.89573 au 
 T_jup = 3.319 
[ 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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