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115015 Chang Diaz (2003 QX84)
Classification: Main-belt Asteroid          SPK-ID: 2115015
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .297468166559498 4.9816e-08  
a 3.000370974811456 1.7017e-08 au
q 2.107856121935958 1.5026e-07 au
i 17.50998717958798 4.1847e-06 deg
node 151.8388470989343 1.5972e-05 deg
peri 253.5021417537027 1.8082e-05 deg
M 77.59949043952592 5.9664e-06 deg
tp 2458791.317332886605
(2019-Nov-03.81733289)
3.1277e-05 TDB
period 1898.282570239546
5.20
1.615e-05
4.422e-08
d
yr
n .1896451063945508 1.6134e-09 deg/d
Q 3.892885827686953 2.208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      9541 days (26.12 yr)  
   first obs. used      1995-02-03  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:56:07  

Additional Information
 Earth MOID = 1.18824 au 
 Jupiter MOID = 1.94475 au 
 T_jup = 3.117 
[ 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 15.05   n/a E2021B55  
diameter diameter 6.148 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115015 Chang Díaz           Discovered 2003 Aug. 24 by M. W. Buie at Cerro Tololo.
Franklin R. Chang Díaz (b. 1950) was an astronaut for 25 years and flew seven Space Shuttle missions from 1986 to 2002. He logged more than 1600 hours in space and helped to deploy the Galileo spacecraft to Jupiter. He is the first Costa Rican astronaut and is also of Chinese descent.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2021-01-27Last Updated: 2021-02-23

[ show close-approach data ]
Alternate Designations
 2003 QX84 = 2000 EV78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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