Skywatch Line Archive

Skywatch Line for Friday, January 21, through Sunday, January 23, 2022

This is Dudley Observatory’s Skywatch Line for Friday, January 21, through Sunday, January 23, written by Sam Salem. On Friday, Sun rises at 7:20am and sets at 4:54pm; Moon sets at 9:38am and rises at 8:45pm. Venus, at magnitude –4.3, emerges into dawn view. Look for it low in the east-southeast about 45 or 30 minutes before sunrise. It gets higher every day. In a telescope or good binoculars, it’s a thin crescent, getting thicker every day. Mars, fainter at magnitude +1.5, is low in the southeast in early dawn. If Venus has risen at the time of observation, it… Continue reading

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Skywatch Line for Wednesday and Thursday, January 19 and 20, 2022

This is Dudley Observatory’s Skywatch Line for Wednesday and Thursday, January 19 and 20, written by Alan French. The Sun sets at 4:52 P.M. on Wednesday and rises at 7:21 A.M. on Thursday. Sunset on Thursday is at 4:53. Reaching full early this past Monday evening, a waning gibbous Moon now rises early in the evening and sets after sunrise. On Wednesday the Moon rises at 6:31 P.M. in the east northeast, appearing 97% illuminated. It rises at 7:38 P.M. on Thursday and its visible face will be 90% sunlit. Look for the bright Moon low toward the west before… Continue reading

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Skywatch Line for Monday and Tuesday January 17th, and 18th, 2022

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday January 17th, and 18th, written by Joe Slomka. The Sun sets at 4:49 PM; night falls at 6:29. Dawn begins at 5:42 AM and ends with the Sun rising at 7:22. Cancer houses the Moon on both nights. Monday’s Full “Wolf Moon” rises at 4:23 PM in the Northeast, appears 29 Arc-minutes in size and sets at 8:11 AM, Tuesday. Tuesday’s Moon rises at 5:26 PM, appears the same as Monday’s and sets at 8:45 AM on Wednesday. Comet Borrelly lies about 34° high above the southwestern horizon at… Continue reading

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Skywatch Line for Friday, January 14, through Sunday, January 16, 2022

This is Dudley Observatory’s Skywatch Line for Friday, January 14, through Sunday, January 16, written by Sam Salem. On Friday, Sun rises at 7:24am and sets at 4:45pm; Moon sets at 4:51am and rises at 1:52pm. Fading Mercury is low in the west-southwest in twilight, with Saturn near it. Venus is out of sight. Next week it will begin emerging low in the dawn. Mars, at +1.5 magnitude in the feet of Ophiuchus, is low in the southeast in early dawn. To its right or upper right, Mars-colored Antares twinkles a little brighter at magnitude +1.0. Mars and Antares are… Continue reading

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Skywatch Line for Wednesday and Thursday, January 12 and 13, 2022

This is Dudley Observatory’s Skywatch Line for Wednesday and Thursday, January 12 and 13, written by Alan French. The Sun sets at 4:44 P.M. on Wednesday and rises at 7:25 A.M. on Thursday. Sunset on Thursday is at 4:45. Reaching first quarter last Sunday, a waxing gibbous Moon now rises early in the afternoon and sets after midnight. On Wednesday the Moon rises at 12:47 P.M. and is high toward the southeast as darkness falls, appearing 79% illuminated. It rises at 1:17 P.M. on Thursday and will be toward the east southeast as night falls, with 86% of its face… Continue reading

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Skywatch Line for Monday and Tuesday January 10th, and 11th, 2022

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday January 10th, and 11th, written by Joe Slomka. The Sun sets at 4:41 PM; night falls at 6:22. Dawn begins at 5:44 AM and ends with the Sun rising at 7:25. Monday’s 8-day-old Moon occupies Cetus, rises at 11:59 AM in the Southeast, appears 29 arc-minutes in size, 61% illuminated and sets at 1:44 AM, Tuesday. Tuesday’s Moon rises in Aries, appears the same size but 70% lit and sets at 2:47 AM, Wednesday. Note that Monday’s Moon lies 7° below Uranus and on Tuesday it lies 5° above… Continue reading

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Skywatch Line for Friday, January 7, through Sunday, January 9, 2022

This is Dudley Observatory’s Skywatch Line for Friday, January 7, through Sunday, January 9, written by Sam Salem. On Friday, Sun rises at 7:26am and sets at 4:38pm; Moon rises at 10:55am and sets at 10:30pm. The Moon and planet Neptune sit 7 degrees apart an hour after sunset on Friday. Neptune requires binoculars or a small telescope to observe. It sits just less than 19 degrees east-northeast of Jupiter. The solar system’s outermost planet, Neptune, is currently about 3.3 degrees northeast of 4th-magnitude Phi (ϕ) Aquarii in the constellation of Aquarius. Mercury reaches greatest eastern elongation, 19 degrees east… Continue reading

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Skywatch Line for Wednesday and Thursday, January 5 and 6, 2022

This is Dudley Observatory’s Skywatch Line for Wednesday and Thursday, January 5 and 6, written by Alan French. The Sun sets at 4:36 P.M. on Wednesday and rises at 7:26 A.M. on Thursday. Sunset on Thursday is at 4:35. Our days continue to lengthen. Reaching new last Sunday, a crescent Moon now graces the early evening sky. As darkness falls on Wednesday night, look for a slender, 13% illuminated, crescent low toward the southwest. Bright Jupiter will be six degrees above the Moon, and the pair will be a lovely sight. With the proper choice of a foreground, they’ll make… Continue reading

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Skywatch Line for Monday and Tuesday January 3rd, and 4th, 2022

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday January 3rd, and 4th, written by Joe Slomka. The Sun sets at 4:34 PM; night falls at 6:16. Dawn begins at 5:44 AM and ends with the Sun rising at 7:26. Southwestern Capricornus houses the Moon on both nights. Monday’s 1-day-old Moon rises at 8:36 AM, appears 33 arc-minutes in size, 2% illuminated, 2° high at 5:16 PM and sets at 5:33 PM. Tuesday’s Moon rises at 9:24 AM, 32 arc-minutes, 7% lit, 14° high at 5 PM and sets at 6:51 PM. Monday’s Moon lies just below Mercury;… Continue reading

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Skywatch Line for Friday, December 31, 2021 through Sunday, January 2, 2022

This is Dudley Observatory’s Skywatch Line for Friday, December 31, through Sunday, January 2, written by Sam Salem. On Friday, Sun rises at 7:26am and sets at 4:31pm; Moon rises at 5:03am and sets at 2:22pm. New Moon occurs on Sunday at 1:33 p.m. This new Moon will occur less than a day after lunar perigee, resulting in large tides around the world. The Moon and Mars both are visible on Friday morning, just 4 degrees apart in the southeastern sky an hour before sunrise. Look for a hint of earthshine, sunlight reflecting off our planet to illuminate the portion… Continue reading

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