Description

The maps on this page illustrate Lacaille's zodiacal catalog from Éphémérides des mouvemens célestes [1, pp. lxv-lxxvij]. The previous page has explanations.

They represent Lacaille's zodiacal stars as blue disks sized according to their magnitude. Many zodiacal stars have no magnitude assigned in the catalog; their icons correspond to the arbitrary magnitude 6.

Reference stars adjusted to the catalog's epoch and equinox are represented as + crosses (the same star set as on the reference maps), or x crosses for the few additional stars from the Draper catalog linked to zodiacal stars. A blue line, often reduced to a dot, connects Lacaille's position to the modern one.

Maps

The four maps below cover the whole catalog. They are aligned with the ecliptic coordinate system and centered on the equinoxes and solstices. They use the equirectangular projection.

Capricorn
ZOD_3
Libra
ZOD_2
Cancer
ZOD_1
Aries
ZOD_0

References

[1] Éphémérides des mouvemens célestes, pour dix années, depuis 1765 jusqu'en 1775, et pour le meridien de la ville de Paris, Tome VI, Paris: Jean-Thomas Heissant, 1763.


Acknowledgment. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.