12/12 彗星 + 流星雨
又週六 寶二團
http://www.skyandtelescope.com/observing/comet-catalina-sails-into-northern-skies111120151111/Comet Catalina highlights:
* November 24 — Approximate date of first visibility in the dawn sky
* December 7 — Catalina gets company! The comet pairs up with the planet Venus and the waning crescent Moon this morning. From the central United States, Venus shines 4° southwest and the Moon 5° southwest of the comet.
* December 23–24 — Comet crosses into Boötes
* January 1, 2016 — Close pass (0.5°) of Arcturus on the first day of 2016
* January 9 — Comet crosses into Canes Venatici
* January 12 — Closest to Earth at 66.9 million miles
* January 14 — Comet crosses into Ursa Major
* January 14–15 — Passes just 1° north of Alkaid, the star at the end of the Big Dipper's handle
* January 16 — Passes 2° southwest of the 8th-magnitude galaxy, M101
* January 17 — Passes 3.4° northeast of the double star Mizar in the bend of the Big Dipper's handle
* January 21 — Comet crosses into Draco
* January 25 — Comet crosses into Camelopardalis
- See more at:
http://www.skyandtelescope.com/observing/comet-catalina-sails-into-northern-skies111120151111/#sthash.1G34HmLF.dpuf