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7604 Kridsadaporn (1995 QY2)
Classification: Mars-crossing Asteroid          SPK-ID: 2007604
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5740170533244923 4.0495e-08  
a 3.112452811170026 1.9692e-08 au
q 1.325851819890675 1.2335e-07 au
i 20.45094619597668 8.4755e-06 deg
node 147.2379559993096 1.59e-05 deg
peri 266.2919177672181 1.8366e-05 deg
M 265.5579799753036 1.0832e-05 deg
tp 2458126.657005631078
6.4463e-05 JED
period 2005.638189204933
n .1794939894631293 1.7034e-09 deg/d
Q 4.899053802449377 3.0995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      923  
   data-arc span      11341 days (31.05 yr)  
   first obs. used      1984-06-23  
   last obs. used      2015-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5676  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:22:32  

Additional Information
 Earth MOID = .521207 au 
 Jupiter MOID = 1.75892 au 
 T_jup = 2.859 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO263417  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7604 Kridsadaporn           Discovered 1995 Aug. 31 by R. H. McNaught at Siding Spring.
Kridsadaporn (San) Ritsmitchai (1964-2004) was born in Songhkla, Thailand. She and her husband Martin Callaway both lived and worked at Siding Spring Observatory. San is remembered in Coonabarabran for her caring nature and community work. She died tragically in a car accident.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15

[ show close-approach data ]
Alternate Designations
 1995 QY2 = 1984 QD1 = 1991 CF3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-04 07:55 UT
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