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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2291333784184218 7.393e-08  
a 2.54659115599286 1.1029e-08 au
q 1.963082120969742 1.9344e-07 au
i 16.96484408845403 8.461e-06 deg
node 358.1470781185105 1.2045e-05 deg
peri 29.72690396271701 2.4781e-05 deg
M 119.9538539849296 2.012e-05 deg
tp 2458505.905853989069
(2019-Jan-22.40585399)
8.0696e-05 TDB
period 1484.353246260059
4.06
9.6428e-06
2.64e-08
d
yr
n .2425298701013707 1.5755e-09 deg/d
Q 3.130100191015978 1.3556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      7906 days (21.65 yr)  
   first obs. used      1998-08-28  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47315  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:14  

Additional Information
 Earth MOID = .980461 au 
 Jupiter MOID = 2.39718 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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