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74123 (1998 QG56)
Classification: Main-belt Asteroid          SPK-ID: 2074123
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289695537737998 8.8048e-08  
a 2.546977378511797 1.2922e-08 au
q 1.963797104681988 2.3144e-07 au
i 16.96259464351648 9.1572e-06 deg
node 358.1570705172941 1.2165e-05 deg
peri 29.76938752567753 2.6108e-05 deg
M 22.92031769136539 2.1804e-05 deg
tp 2458505.973366598673
(2019-Jan-22.47336660)
8.9377e-05 TDB
period 1484.69094026988
4.06
1.1299e-05
3.093e-08
d
yr
n .2424747065100034 1.8452e-09 deg/d
Q 3.130157652341605 1.588e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1538  
   data-arc span      7466 days (20.44 yr)  
   first obs. used      1998-08-28  
   last obs. used      2019-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48852  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:07:44  

Additional Information
 Earth MOID = .980461 au 
 Jupiter MOID = 2.39402 au 
 T_jup = 3.346 
[ 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 14.4   n/a MPO333431  
diameter diameter 4.885 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.117   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74123 (1998 QG56)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QG56 = 2000 DX15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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