Where is Comet 21P/Giacobini-Zinner?

Comet 21P/Giacobini-Zinner is currently in the constellation of Monoceros. Right now, from Greenwich, UK (change location), 21P/Giacobini-Zinner can be observed looking in the West-South-West at an altitude of 13.97 degrees above the horizon. View the position of comet 21P/Giacobini-Zinner in an interactive map of the sky. Given its current brightness (magnitude 17.47), 21P/Giacobini-Zinner is visible only through long exposure photography.

The current apparent celestial coordinates of comet 21P/Giacobini-Zinner, useful for pointing an equatorial telescope, the hour angle, and the sidereal time are provided in the table below:

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Star map showing the position of comet 21P/Giacobini-Zinner in the constellation of Monoceros on July, 17 2025
Field of view: 50x30 degrees
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Additional Resources on TheSkyLive

• Comet 21P/Giacobini-Zinner: Complete reference information on TheSkyLive.com.
• Where is comet 21P/Giacobini-Zinner?: Key information on where to find comet 21P/Giacobini-Zinner in the sky.
• Distance of comet 21P/Giacobini-Zinner from Earth: Find out how far comet 21P/Giacobini-Zinner is from Earth right now.
• How Bright is comet 21P/Giacobini-Zinner?: Current visual brightness (magnitude) and apparent size.
• Rise and Set Times: Rise and set times of comet 21P/Giacobini-Zinner from your location.
• Interactive Sky Map: Planetarium-style interactive visualization of comet 21P/Giacobini-Zinner's position in the sky.
• Live Position Tracker: High precision real time tracker of comet 21P/Giacobini-Zinner's position using deep space imagery.
• Ephemeris: 15 days comet 21P/Giacobini-Zinner's computed ephemeris.