This past weekend Comet McNaught peaked at a brightness that surpassed even Venus. Fascinated sky enthusiasts in the Earth's northern hemisphere were treated to an instantly visible [
http://antwrp.gsfc.
] comet head and a faint elongated tail near sunrise and sunset. Recent brightness estimates [
http://cfa-www.harv
] had Comet McNaught [
http://en.wikipedia
] brighter than magnitude [
http://csep10.phys.
] -5 (minus five) over this past weekend, making it the brightest comet [
http://cfa-www.harv
] since Comet Ikeya-Seki [
http://en.wikipedia
] in 1965, which was recorded at -7 (minus seven). The Great Comet [
http://en.wikipedia
] of 2007 reached its brightest as it rounded the Sun well inside the orbit of Mercury. Over the next week Comet McNaught [
http://cometography
] will begin to fade as it moves south and away from the Sun. The unexpectedly bright comet should remain visible [
http://cfa-www.harv
] to observers in the southern hemisphere [
http://www.assa.org
] with unaided eyes for the rest of January. The above image, vertically compressed, was taken at sunset last Friday from mountains above Catalonia [
http://en.wikipedia
], Spain [
http://en.wikipedia
].
Explanation
This past weekend Comet McNaught peaked at a brightness that surpassed even Venus. Fascinated sky enthusiasts in the Earth's northern hemisphere were treated to an instantly visible [
http://antwrp.gsfc.
] comet head and a faint elongated tail near sunrise and sunset. Recent brightness estimates [
http://cfa-www.harv
] had Comet McNaught [
http://en.wikipedia
] brighter than magnitude [
http://csep10.phys.
] -5 (minus five) over this past weekend, making it the brightest comet [
http://cfa-www.harv
] since Comet Ikeya-Seki [
http://en.wikipedia
] in 1965, which was recorded at -7 (minus seven). The Great Comet [
http://en.wikipedia
] of 2007 reached its brightest as it rounded the Sun well inside the orbit of Mercury. Over the next week Comet McNaught [
http://cometography
] will begin to fade as it moves south and away from the Sun. The unexpectedly bright comet should remain visible [
http://cfa-www.harv
] to observers in the southern hemisphere [
http://www.assa.org
] with unaided eyes for the rest of January. The above image, vertically compressed, was taken at sunset last Friday from mountains above Catalonia [
http://en.wikipedia
], Spain [
http://en.wikipedia
].
Explanation