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JPL Small-Body Database Browser
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74142 (1998 QL77)
Classification: Main-belt Asteroid          SPK-ID: 2074142
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 .1498819190384906 6.2549e-08  
a 2.636493830112284 1.6464e-08 au
q 2.241331075321915 1.7101e-07 au
i 9.874458830033021 5.0563e-06 deg
node 260.3917612080551 3.5288e-05 deg
peri 78.32721661971937 3.972e-05 deg
M 309.047358486774 1.6728e-05 deg
tp 2458821.810881980371
(2019-Dec-04.31088198)
7.302e-05 TDB
period 1563.646459668881
4.28
1.4647e-05
4.01e-08
d
yr
n .230231071591614 2.1566e-09 deg/d
Q 3.031656584902654 1.8932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      7678 days (21.02 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51706  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:43:22  

Additional Information
 Earth MOID = 1.25633 au 
 Jupiter MOID = 2.38334 au 
 T_jup = 3.360 
[ 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 MPO347990  
diameter diameter 6.412 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74142 (1998 QL77)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QL77 = 2002 LY36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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