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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1942902341969973 4.9674e-08  
a 2.634080639573213 1.655e-08 au
q 2.122304495216757 1.34e-07 au
i 5.494997919672688 4.9193e-06 deg
node 64.97787690211017 6.1867e-05 deg
peri 259.1421884958329 6.3304e-05 deg
M 319.4673286494796 1.3148e-05 deg
tp 2458776.310477261585
(2019-Oct-19.81047726)		 5.7347e-05 TDB
period 1561.500135701221
4.28		 1.4717e-05
4.029e-08		 d
yr
n .2305475303966818 2.1729e-09 deg/d
Q 3.145856783929668 1.9766e-08 au
   Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      7704 days (21.09 yr)  
   first obs. used      1998-08-26  
   last obs. used      2019-09-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58722  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:50:31  

Additional Information
 Earth MOID = 1.1177 au 
 Jupiter MOID = 2.20247 au 
 T_jup = 3.365 
[ 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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