Printable finder charts for Thyra
| Color schemes | ||||
| Date span | Date of opposition | Dark on light | Light on dark | Pastel |
| Sep 2000 – Feb 2001 | 25 Nov | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG |
| Nov 2004 – Apr 2005 | 27 Jan | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG |
| Sep 2011 – Feb 2012 | 22 Nov | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG |
| Nov 2015 – Apr 2016 | 25 Jan | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG |
| Sep 2022 – Feb 2023 | 19 Nov | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG | PNGPDF-RGBPDF-CMYKSVG |
Credits
The charts above were generated using StarCharter, a command-line tool for producing vector-graphics charts of the night sky, written by the author and freely available for download.
The paths of the planets are taken from the DE430 planetary ephemeris computed by the Jet Propulsion Laboratory (JPL). Planetary positions were extracted from the DE430 files using EphemerisCompute, which was also written by the author, and is also freely available for download.
The positions of asteroids are calculated from orbital elements published by Ted Bowell of the Lowell Observatory. Comet positions are computed from orbital elements published by the Minor Planet Center (MPC).
Star positions and magnitudes were taken from the Hipparcos, Tycho, Tycho-2 and Gaia EDR3 catalogs.