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JPL Small-Body Database Browser
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74530 (1999 GW39)
Classification: Main-belt Asteroid          SPK-ID: 2074530
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349361217550151 4.0808e-08  
a 3.083903989274462 1.8452e-08 au
q 2.667773945096946 1.2991e-07 au
i 10.62408424551714 4.6059e-06 deg
node 39.15895747471382 2.449e-05 deg
peri 74.70454626852373 3.3302e-05 deg
M 26.89132905490662 1.9521e-05 deg
tp 2458852.739120917100
(2020-Jan-04.23912092)
0.00010747 TDB
period 1978.106636575414
5.42
1.7754e-05
4.861e-08
d
yr
n .1819922108058077 1.6334e-09 deg/d
Q 3.500034033451978 2.0942e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      9872 days (27.03 yr)  
   first obs. used      1993-01-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5489  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:16  

Additional Information
 Earth MOID = 1.70875 au 
 Jupiter MOID = 1.73922 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457306.5 (2015-Oct-11.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135775339043798 4.0971e-08  
q 2.663952072958547 1.3071e-07 au
tp 2456877.834723756149
(2014-Aug-08.33472376)
0.00011051 TDB
node 39.17262394032733 2.4489e-05 deg
peri 75.10956697594919 3.315e-05 deg
i 10.62633253582321 4.6067e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      9872 days (27.03 yr)  
   first obs. used      1993-01-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5489  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:16  

Additional Information
 Jupiter MOID = 1.73922 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.678587159378923E-15 -5.317179966430502E-15 1.31718422795328E-12 4.693981491533103E-15 2.805706833387088E-13 -6.034977712190427E-15
q -5.317179966430502E-15 1.708623667785441E-14 -4.650508789136199E-12 -1.368075388812445E-14 -9.738440809816366E-13 1.967446910573807E-14
tp 1.31718422795328E-12 -4.650508789136199E-12 1.221343363245313E-8 5.582872958040113E-12 2.493025114867032E-9 -7.22467040245531E-12
node 4.693981491533103E-15 -1.368075388812445E-14 5.582872958040113E-12 5.997320751266973E-10 -5.877336282905987E-10 -1.042388738455093E-11
peri 2.805706833387088E-13 -9.738440809816366E-13 2.493025114867032E-9 -5.877336282905987E-10 1.098910875464402E-9 8.752285618508056E-12
i -6.034977712190427E-15 1.967446910573807E-14 -7.22467040245531E-12 -1.042388738455093E-11 8.752285618508056E-12 2.122197331770685E-11

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 13.9   n/a MPO502608  
diameter diameter 6.016 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.201   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74530 (1999 GW39)          Discovered 1999-Apr-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GW39 = 2002 TB45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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