Occultation of C313.2

RCS star position is taken as an average of 11 measurements of the star position by Ron Stone using the FASTT from Jun 18 to Jul 6 2004 (Epoch 2004.5). Charon's position is taken from the unmodified, light-time corrected, geocentric JPL Horizon's ephemeris (PLU006, DE-0406, LE-0406).

Reference star position: (UCAC2, in epoch of event)	RA (J2000)	Dec (J2000)	R Mag
C313.2	17 28 55.0174	-15 00 54.750	14.8
Offsets from Reference Position/Ephemeris
Body	RA (arcsec)	Dec (arcsec)
C313.2	-0.0038 +/- 0.0283	-0.044 +/- 0.0283
Pluto System Barycenter	0 +/-	0 +/-	(from PLU006)
Charon	0 +/-	0 +/-	(from PLU006)

	C313.2 UCAC2.0 Prediction (as of: 2005 1 25)
Geocentric Mid-time (yyyy mm dd hh:mm:ss)	2005 7 11 03:39:16.4745 UT
Minimum Geocentric Separation (arcsec)	0.058 +/- 0.028
Position Angle (deg)	173.692
Geocentric Shadow Velocity (km s^-1)	20.79
Star Magnitude	14.8 R
Solar Angle (deg)	152
East Longitude (deg)	-79.0
Distance (AU)	30.06
Prediction Version	C313.2-RCS-1.0

Prediction Notes

The separation between the center line and each of the limb lines is an estimated Charon radius of 590 km.
The star position is in epoch 2004.5, whereas the reference position is in the epoch of the event (2005.5), and proper motion is neglected.

Archive of all C313.2 occultation predictions based on alternate sources of data, including past predictions.

Please direct all inquiries to Planetary Astronomy Lab (planetary-astronomy@mit.edu)

Last updated by Elisabeth Adams (era@mit.edu) and Michael Person (mjperson@mit.edu) 2005-01-25 16:50 EDT

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