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172739 (2004 CT23)
Classification: Main-belt Asteroid          SPK-ID: 2172739
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.

Note: If the applet is not working, here are some notes that might help.
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .065771401035017 5.3752e-08  
a 2.787466528726125 2.9268e-08 au
q 2.604130949793593 1.5918e-07 au
i 6.131551822977731 6.351e-06 deg
node 96.35460624572086 5.895e-05 deg
peri 229.7214274662019 7.9237e-05 deg
M 345.5811123069489 5.4702e-05 deg
tp 2459068.583547565999
0.0002586 TDB
period 1699.85907689481
n .2117822617729136 3.3355e-09 deg/d
Q 2.970802107658658 3.1192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      6032 days (16.51 yr)  
   first obs. used      2002-11-21  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:53:21  

Additional Information
 Earth MOID = 1.59673 au 
 Jupiter MOID = 2.24386 au 
 T_jup = 3.319 
[ 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 15.8   n/a MPO436858  

172739 (2004 CT23)          Discovered 2004-Feb-12 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2108-Nov-15 07:00 00:11 Amphi 0.0471438703815943 0.0470996890849699 0.0471880556454965 3.20027099840328 3.20027096030012 2491309.791761815 10.6928304726937 2304.44286881337 49.1455372299205 17.2010325028265 42502.811461683 T 12 CATAB v2.0f-lin.ifort 2020-Feb-24 16:53:36 2020-Feb-24 16:53

Alternate Designations
 2004 CT23 = 2005 GC144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jul-05 21:20 UT
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