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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494915974962288 6.2494e-08  
a 2.635227205221864 1.6191e-08 au
q 2.241282880547725 1.7074e-07 au
i 9.874587489492399 5.0528e-06 deg
node 260.3913155265744 3.5098e-05 deg
peri 78.44533060242998 3.9576e-05 deg
M 41.07774089261672 1.6921e-05 deg
tp 2458822.208936592330
(2019-Dec-04.70893659)
7.3136e-05 TDB
period 1562.519784000525
4.28
1.44e-05
3.943e-08
d
yr
n .2303970827673558 2.1234e-09 deg/d
Q 3.029171529896002 1.8612e-08 au
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52044  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:11:32  

Additional Information
 Earth MOID = 1.25723 au 
 Jupiter MOID = 2.38815 au 
 T_jup = 3.361 
[ 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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