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74165 (1998 QU104)
Classification: Main-belt Asteroid          SPK-ID: 2074165
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1938792157094338 4.8975e-08  
a 2.632885934593405 1.6129e-08 au
q 2.122424074542036 1.3173e-07 au
i 5.49450069081516 4.9163e-06 deg
node 64.97296717136437 6.126e-05 deg
peri 259.1995016533881 6.2694e-05 deg
M 51.68336436906078 1.3325e-05 deg
tp 2458776.475885486538
(2019-Oct-19.97588549)
5.7297e-05 TDB
period 1560.43791284464
4.27
1.4339e-05
3.926e-08
d
yr
n .2307044689421375 2.1199e-09 deg/d
Q 3.143347794644774 1.9256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      8100 days (22.18 yr)  
   first obs. used      1998-08-26  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:47  

Additional Information
 Earth MOID = 1.1187 au 
 Jupiter MOID = 2.20776 au 
 T_jup = 3.366 
[ 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 15.3   n/a MPO347990  
diameter diameter 2.660 km 0.578 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.131   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74165 (1998 QU104)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QU104 = 2002 QE42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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