| Prediction Version | Date & Time of Prediction (y m d) |
Date and Time (y m d h:s) |
Minimum Separation (arcsec) |
C313.2 Right Ascension (J2000) (h m s) |
C313.2 Declination (J2000) (d m s) |
Pluto Barycenter Right Ascension Offset (arcsec) |
Pluto Barycenter Declination Offset (arcsec) |
Position Angle (deg) |
Data Used | Notes |
| C313.2-U2.0-1.0 | 2004 09 18 11:03 AM EDT |
2005 07 11 03:38 UT |
0.008 ±0.030 | 17 28 55.0174 | –15 00 54.750 | Offset: 0.00 |
Offset: 0.00 |
173.7 | UCAC2 Catalogue and PLU006 ephemeris | A, B (see below) |
| C313.2-RCS-1.0 | 2005 01 25 16:50 PM EDT |
2005 07 11 03:39 UT |
0.058 ±0.028 | Offset: +0.0038 ± 0.0283 |
Offset: –0.044 ±0.028 |
Offset: 0.00 |
Offset: 0.00 |
173.7 | 11 observations at FASTT at USNO by Ron Stone and PLU006 ephemeris | A, B, C (see below) |
| C313.2-U2.0-2.0 | 2005 05 25 15:00 PM EDT |
2005 07 11 03:37 UT |
0.035 ±0.020 | Offset: 0.00 |
Offset: 0.00 |
Offset: 0.00 |
Offset: 0.00 |
173.7 | UCAC2 Catalogue and PLU013 ephemeris | A, C (see below) |
| C313.2-U2.0-2.1 | 2005 06 10 15:00 PM EDT |
2005 07 11 03:36 UT |
0.058 ±0.005 | Offset: +0.0046 ±0.0041 |
Offset: +0.0240 ±0.0050 |
Offset: 0.00 |
Offset: 0.00 |
173.7 | 157 strip scans and PLU013 ephemeris | A, C, D (see below) |
| C313.2-U2.0-2.2 | 2005 06 27 11:00 PM EDT |
2005 07 11 03:37 UT |
0.055 ±0.008 | Offset: +0.0098 ± 0.0028 |
Offset: +0.0291 ± 0.0037 |
Offset: –0.0040 ±0.0066 |
Offset: +0.0084 ± 0.0064 |
173.7 | 244 strip scans and offsets to PLU013 ephemeris | A, C, D (see below) |
| C313.2-USNO-1.0 | 2005 07 08 15:00 PM EDT |
2005 07 11 03:36 UT |
0.058 ±0.002 |
Offset: –0.0163 ± 0.0010 |
Offset: +0.0350 ± 0.0019 |
Offset: –0.0026 ±0.0020 |
Offset: –0.0311 ± 0.0040 |
173.7 | 23 USNO frames |
|
| C313.2-USNO-1.1 | 2005 07 09 15:00 PM EDT |
2005 07 11 03:37 UT |
0.100 ±0.004 | Offset: –0.0151 ± 0.0010 |
Offset: +0.0340 ± 0.0017 |
Offset: –0.0004 ±0.0020 |
Offset: –0.0325 ± 0.0033 |
173.7 | 28 USNO frames |
NOTES
A) The separation between the center line and each of the limb lines is an estimated Charon radius. (590 km)
B) The ephemeris used in this prediction is that generated for Charon with JPL's Horizon's Ephemeris service (corrected for Light Travel time). Ephemeris Files used included PLU006.
C) The ephemeris used in this prediction is that generated for Charon with JPL's Horizon's Ephemeris service (corrected for Light Travel time). Ephemeris Files used included PLU013.
D) Results for C313.2 are tabulated as offsets from the position given in prediction version C313.2-U2.0-1.0. Results for Charon (if any) are tabulated as offsets from the unmodified JPL Horizon's ephemeris. Strip scan reduction includes simultaneous least-squares point spread fitting to Pluto and Charon as well as C313.2, and uses the UCAC2 catalog for astrometric calibration.
Please direct all inquiries to Planetary Astronomy Lab (planetary-astronomy@mit.edu)
Last updated by Emily A Kramer (ekramer@mit.edu) 2005 07 09