Horologium

Horologium is a small southern constellation which culminates at around midnight in November.

The name ‘Horologium’ is Latin for ‘clock’, and the constellation is usually depicted as a pendulum clock. The name was assigned to this sky area by Nicolas Louis de Lacaille in 1756.

Horologium has only two stars brighter than fifth magnitude, but does have a few deep sky objects of interest, including the globular cluster NGC 1261 and the barred spiral galaxy NGC 1512.

A very much more challenging cluster is Arp-Madore 1, the most distant known globular cluster in orbit around the Milky Way. However, at magnitude 16, a large telescope is needed to see it.

In India the constellation is called ಹೋರಾಸೂಚಿ (Horasoochi)

Horologium contains:

• Stars
  • α-Hor (mag 3.9)
  • δ-Hor (mag 4.9)
  • β-Hor (mag 5.0)
  • μ-Hor (mag 5.1)
  • ζ-Hor (mag 5.2)
  • ν-Hor (mag 5.3)
  • η-Hor (mag 5.3)
  • HD 27588 (mag 5.3)
  • λ-Hor (mag 5.4)
  • ι-Hor (mag 5.4)
  • HD 22231 (mag 5.7)
  • HD 23719 (mag 5.7)
  • γ-Hor (mag 5.8)
  • TW Hor (mag 5.8)
  • HD 14641 (mag 5.8)
  • HD 20640 (mag 5.8)
  • HD 24706 (mag 5.9)
  • TU Hor (mag 6.0)
  • HD 18185 (mag 6.0)
  • HD 19948 (mag 6.1)
  • HD 17254 (mag 6.2)
  • HD 18265 (mag 6.2)
  • HD 16170 (mag 6.3)
  • HD 17326 (mag 6.3)
  • HD 15646 (mag 6.3)
• Open Clusters
  • NGC 1252
• Globular Clusters
  • NGC 1261 (mag 8.4)
• Galaxy
  • NGC 1433 (mag 10.0)
  • NGC 1512 (mag 10.5)
  • NGC 1448 (mag 11.5)
  • NGC 1527 (mag 11.7)
  • NGC 1493 (mag 11.9)
  • NGC 1411 (mag 12.1)
  • IC 1954 (mag 12.1)
  • NGC 1249 (mag 12.2)
  • NGC 1494 (mag 12.3)
  • IC 1970 (mag 12.4)
  • IC 2035 (mag 12.5)
  • IC 2000 (mag 12.9)
  • IC 1933 (mag 12.9)
  • NGC 1311 (mag 12.9)
  • IC 1959 (mag 13.0)
  • NGC 1483 (mag 13.2)
  • NGC 1510 (mag 13.2)
  • IC 1914 (mag 13.3)
  • NGC 1495 (mag 13.3)
  • NGC 1031 (mag 13.6)
  • NGC 1096 (mag 13.8)
  • NGC 1136 (mag 13.8)
  • NGC 1476 (mag 13.8)
  • NGC 1246 (mag 13.9)
  • NGC 1244 (mag 13.9)