Where is Comet C/2021 S3 (PANSTARRS)?

Comet C/2021 S3 (PANSTARRS) is currently in the constellation of Andromeda. Right now, from Greenwich, UK (change location), C/2021 S3 (PANSTARRS) can be observed looking in the North at an altitude of 5.87 degrees above the horizon. View the position of comet C/2021 S3 (PANSTARRS) in an interactive map of the sky. Given its current brightness (magnitude 18.07), C/2021 S3 (PANSTARRS) is visible only through long exposure photography.

The current apparent celestial coordinates of comet C/2021 S3 (PANSTARRS), 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 C/2021 S3 (PANSTARRS) in the constellation of Andromeda on July, 17 2025
Field of view: 50x30 degrees
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Additional Resources on TheSkyLive

• Comet C/2021 S3 (PANSTARRS): Complete reference information on TheSkyLive.com.
• Where is comet C/2021 S3 (PANSTARRS)?: Key information on where to find comet C/2021 S3 (PANSTARRS) in the sky.
• Distance of comet C/2021 S3 (PANSTARRS) from Earth: Find out how far comet C/2021 S3 (PANSTARRS) is from Earth right now.
• How Bright is comet C/2021 S3 (PANSTARRS)?: Current visual brightness (magnitude) and apparent size.
• Rise and Set Times: Rise and set times of comet C/2021 S3 (PANSTARRS) from your location.
• Interactive Sky Map: Planetarium-style interactive visualization of comet C/2021 S3 (PANSTARRS)'s position in the sky.
• Live Position Tracker: High precision real time tracker of comet C/2021 S3 (PANSTARRS)'s position using deep space imagery.
• Ephemeris: 15 days comet C/2021 S3 (PANSTARRS)'s computed ephemeris.