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58595 Joepollock (1997 TX9)
Classification: Main-belt Asteroid          SPK-ID: 2058595
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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.

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1853645187514197 2.9219e-08  
a 2.251593009079242 8.5351e-09 au
q 1.834227554527208 6.7059e-08 au
i 6.387048564707073 3.9781e-06 deg
node 43.0422318800587 2.978e-05 deg
peri 240.8775735252902 3.2179e-05 deg
M 329.6719339773406 1.0901e-05 deg
tp 2459104.462204556011
3.7238e-05 TDB
period 1234.051443049515
n .2917220364091057 1.6588e-09 deg/d
Q 2.668958463631277 1.0117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1058  
   data-arc span      11877 days (32.52 yr)  
   first obs. used      1987-12-11  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51244  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:34:18  

Additional Information
 Earth MOID = .828225 au 
 Jupiter MOID = 2.49221 au 
 T_jup = 3.596 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO319768  
diameter diameter 2.874 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.63 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.135   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

58595 Joepollock           Discovered 1997 Oct. 5 by P. Pravec at Ondrejov.
Joseph T. Pollock (b. 1950) is a professor of astronomy at the Appalachian State University, Boone, North Carolina. His photometric observations of asteroids with the PROMPT telescopes have been critical for the characterization of several binary and tumbling asteroids.
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 2014-07-12Last Updated: 2014-08-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Oct-25 09:02 UT
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