My Blue Room

A fresh comet is swinging through the inner solar system, and it is brightening rapidly as it approaches the sun. Presenting, Comet McNaught (C/2009 R1):

Amateur astronomer John Chumack of Yellow Springs, Ohio, caught the comet passing by galaxy NGC 891 just before sunrise on June 8th. “I used a 5.5 inch telescope and a Canon Rebel Xsi digital camera to take this 15 minute exposure,” he says. “It also looked great through binoculars.”

Comet McNaught can be found low in the northeastern sky before dawn gliding through the constellation Perseus. It is brightening as it approaches Earth for a 1.13 AU close encounter on June 15th and 16th. Currently, the comet is at the threshold of naked eye visibility (6th magnitude) and could become as bright as the stars of the Big Dipper (2nd magnitude) before the end of the month. Because this is the comet’s first visit to the inner solar system, predictions of future brightness are necessarily uncertain; amateur astronomers should be alert for the unexpected. [ephemeris] [3D orbit] [Sky & Telescope: sky map, full story]

more images: from Dr Paolo Candy of Ci.A.O. Cimini Astronomical Observatory, Italy; from Michael Jäger of Stixendorf, Austria; from Anthony Ayiomamitis of Athens, Greece; from Primoz Cigler of Bohor, Slovenia; from Pete Lawrence of Selsey, West Sussex, UK; from Feys Filip at the Public Observatory “Sasteria” in Crete; from Monika Landy-Gyebnar of Veszprem, Hungary; from Petr Horalek of Ustupky, Czech republic;

A fresh comet is swinging through the inner solar system, and it is brightening rapidly as it approaches the sun. Presenting, Comet McNaught (C/2009 R1):

Michael Jäger of Stixendorf, Austria, took the picture on June 6th using an 8-inch telescope. The comet’s green atmosphere is larger than the planet Jupiter, while the long willowy ion tail stretches more than a million kilometers through space. These dimensions make the comet a fine target for backyard telescopes.

Comet McNaught can be found low in the northeastern sky before dawn gliding through the constellation Perseus. It is brightening as it approaches Earth for a 1.13 AU close encounter on June 15th and 16th. Currently, the comet is at the threshold of naked eye visibility (5th to 6th magnitude) and could become as bright as the stars of the Big Dipper (2nd magnitude) before the end of the month. Because this is the comet’s first visit to the inner solar system, predictions of future brightness are necessarily uncertain; amateur astronomers should be alert for the unexpected. [ephemeris] [3D orbit] [Sky & Telescope: sky map, full story]

more images: from John Chumack of Yellow Springs, Ohio; from Primoz Cigler of Bohor, Slovenia; from Pete Lawrence of Selsey, West Sussex, UK; from Feys Filip at the Public Observatory “Sasteria” in Crete; from Monika Landy-Gyebnar of Veszprem, Hungary; from Petr Horalek of Ustupky, Czech republic;