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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350803387095226 4.0978e-08  
a 3.084255607239047 2.0989e-08 au
q 2.667633315146452 1.3141e-07 au
i 10.62501926417139 6.3964e-06 deg
node 39.16895170668528 2.5577e-05 deg
peri 74.79519727174073 3.6511e-05 deg
M 314.0272568706176 2.4715e-05 deg
tp 2458853.151504545692
(2020-Jan-04.65150455)
0.00013628 TDB
period 1978.444953360148
5.42
2.0196e-05
5.529e-08
d
yr
n .1819610898896044 1.8574e-09 deg/d
Q 3.500877899331641 2.3824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1009  
   data-arc span      9804 days (26.84 yr)  
   first obs. used      1993-01-24  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58491  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:48:34  

Additional Information
 Earth MOID = 1.70888 au 
 Jupiter MOID = 1.73961 au 
 T_jup = 3.187 
[ 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 13.8   n/a MPO319938  
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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