This is the ESO Homepage for the unusual Comet 1995 O1 (Hale-Bopp). It will be updated regularly as new information and images, from ESO as well as from other sources, become available.
This page contains general information, in particular summaries and updates about the current situation. From here there is also access to other pages with supplementary, more specialised information, including one with links to other Hale-Bopp sites.
MPG/ESO 2.2-m + WFI (March 2, 2001)
ESO PR Photo 07a/01
Latest news (March 6, 2001)
An image was obtained on February 27 - March 2, 2001 with the Wide-Field Imager (WFI) at the ESO La Silla Observatory, cf. ESO PR Photos 07a-b/01. It shows that Comet Hale-Bopp is still active at a distance of about 2,000 million km from the Sun. It is also a very large object, measuring at least 2 million km across.
Recent magnitude estimates may be found at the special webpage at the "International Comet Quarterly".
A group of astronomers led by Alan Stern (South-West Research Institute, USA) announced in early June 2000 the discovery of the noble gas argon in Comet Hale-Bopp. The astronomers made the observation on March 29, 1997, by means of an ultraviolet-sensitive instrument on a sounding rocket. More details are available, e.g. in a report published on June 5, 2000 at space.com.
Images from the 3.5-m New Technology Telescope at La Silla have been published at the ESO website on June 29, 1999, cf. ESO PR Photos 28a-b/99. They showed that Comet Hale-Bopp still possessed an enormous halo.
Comet Hale-Bopp Updates
- Comet Hale-Bopp - Update (12 February 1998)
- Comet Hale-Bopp - Update (25 September 1997)
- Comet Hale-Bopp - Update (1 August 1997)
- Comet Hale-Bopp - Update (13 June 1997)
- Comet Hale-Bopp - Update (16 May 1997)
- Older Updates
Images, Links, etc.
- ESO activities (images, texts, etc.)
- Ephemerides for observers
- Other Hale-Bopp Websites
- Information about meeting on Canary Islands (February 1998)
- Local information about activities around Munich
- Miscellaneous information
- Information about some other comets