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74531 (1999 GR40)
Classification: Main-belt Asteroid          SPK-ID: 2074531
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04631194608330486 3.7931e-08  
a 3.064134312836258 2.6759e-08 au
q 2.922228289748181 1.1656e-07 au
i 11.42090146467641 5.9581e-06 deg
node 51.82434489497222 2.7546e-05 deg
peri 219.071129234663 8.3157e-05 deg
M 192.1638336827593 8.0206e-05 deg
tp 2459513.862494723084
(2021-Oct-26.36249472)
0.00043781 TDB
period 1959.115876603132
5.36
2.5664e-05
7.026e-08
d
yr
n .1837563588245715 2.4071e-09 deg/d
Q 3.206040335924335 2.7999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1059  
   data-arc span      7257 days (19.87 yr)  
   first obs. used      1999-04-12  
   last obs. used      2019-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55785  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:28:53  

Additional Information
 Earth MOID = 1.91571 au 
 Jupiter MOID = 1.83084 au 
 T_jup = 3.201 
[ 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 13.7   n/a MPO337819  
diameter diameter 6.239 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.175   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74531 (1999 GR40)          Discovered 1999-Apr-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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