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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349361227701052 4.0876e-08  
a 3.083903986965495 1.9513e-08 au
q 2.667773939969102 1.3051e-07 au
i 10.62408508724102 5.5114e-06 deg
node 39.15895621620497 2.4843e-05 deg
peri 74.70454466023342 3.451e-05 deg
M 26.89133242828287 2.17e-05 deg
tp 2458852.739102547219
(2020-Jan-04.23910255)
0.00011922 TDB
period 1978.106634353856
5.42
1.8774e-05
5.14e-08
d
yr
n .1819922110101983 1.7273e-09 deg/d
Q 3.500034033961889 2.2146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1073  
   data-arc span      9842 days (26.95 yr)  
   first obs. used      1993-01-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:50:31  

Additional Information
 Earth MOID = 1.70875 au 
 Jupiter MOID = 1.73922 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 13.9   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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