Andrew Planck

Astronomer, Teacher, Musician

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lunar dates

Messier and Messier A: Small Pair of Moon Craters on the Sea of Fertility

Messier and Messier A: Small Pair of Moon Craters on the Sea of Fertility

The week of January 31 – February 6 takes us from Day 29 to Day 6. This week we will highlight the moon craters Messier and Messier A, viewable on Friday night. Messier1: [SE/K14] One of my favorite objects on

Andrew Planck January 31, 2022January 30, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Lunar Days in January No Comments Read more

3 Interesting Facts About Moon Crater Plato

3 Interesting Facts About Moon Crater Plato

The week of January 24-30 takes us from Day 21 to Day 28. This week we will highlight the moon crater Plato, viewable on Monday and Tuesday nights. Plato: [NW/D9; L=9°W] When the terminator is a little to the east

Andrew Planck January 24, 2022January 23, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January, Unusual Features on the Moon No Comments Read more

Geminus and Burckhardt: Two Unique Moon Craters

Geminus and Burckhardt: Two Unique Moon Craters

The week of January 17-23 takes us from Full Moon to Day 21. This week we will highlight the moon craters Geminus and Burckhardt, viewable on Tuesday and Wednesday nights. Geminus: [NE/F15] Roughly 200 miles north of Mare Crisium 1

Andrew Planck January 17, 2022January 16, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January No Comments Read more

Peirce and Picard: Two Largest Intact Moon Craters on Mare Crisium

Peirce and Picard: Two Largest Intact Moon Craters on Mare Crisium

The week of January 3-9 takes us from Day 2 to Day 8. This week we will highlight the craters Peirce and Picard located in the NE quadrant of the Field Map and viewable on Wednesday evening. Peirce & Picard:

Andrew Planck January 3, 2022January 3, 2022 Dates to Observe Objects on the Moon, Intact Moon Craters, Lunar Days in January, Unusual Features on the Moon No Comments Read more

Hippalus Rilles on the Moon

Hippalus Rilles on the Moon

The week of December 27 – January 2 takes us from Day 23 to New Moon. This week we will highlight the Hippalus Rilles located in the SW quadrant of the Field Map at M6 and viewable on Tuesday morning.

Andrew Planck December 27, 2021December 23, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Rilles on the Moon No Comments Read more

Moon Crater Proclus: One of the Brightest Spots on the Moon

Moon Crater Proclus: One of the Brightest Spots on the Moon

The week of December 20-26 takes us from Day 17 to Day 21. This week we will highlight the crater Proclus located in the NE quadrant of the Field Map at H14, the Ursid meteor shower, and the Winter Solstice.

Andrew Planck December 20, 2021December 20, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

Rheita Valley – Longest Distinct Valley on the Moon

Rheita Valley – Longest Distinct Valley on the Moon

The week of December 6-12 takes us from Day 3 to Day 9. This week we will highlight Vallis Rheita, viewable on Tuesday & Wednesday evening, Days 4 and 5. Vallis Rheita: [SE/N14; L=52°E] At 276 miles, the Rheita Valley

Andrew Planck December 6, 2021December 5, 2021 Unusual Features on the Moon, Valleys on the Moon No Comments Read more

Mare Nectaris: Multi-Ring Basin on the Moon

Mare Nectaris: Multi-Ring Basin on the Moon

The week of November 22-28 takes us from Day 18 to Day 23. This week we will highlight Mare Nectaris, best viewable on Tuesday night. Mare Nectaris: [SE/L13; L=36°E] The Nectaris basin was excavated 3.9 billion years ago. The oldest

Andrew Planck November 22, 2021November 21, 2021 Dates to Observe Objects on the Moon, Lunar Days in November, Multi-ring basin on the moon No Comments Read more

The Lunar X and Moon Crater Maurolycus

The Lunar X and Moon Crater Maurolycus

The week of November 8-14 takes us from Day 5 to Day 11. This week we will highlight the moon crater Maurolycus and a feature informally referred to as “The Lunar X,” both viewable on Thursday evening, Day 8. Maurolycus:

Andrew Planck November 8, 2021November 8, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in November No Comments Read more

Moon Crater Hevelius and Lunar Basin Grimaldi is the Darkest Spot on the Moon

Moon Crater Hevelius and Lunar Basin Grimaldi is the Darkest Spot on the Moon

The week of November 1-7 takes us from Day 26 to Day 3. This week we will highlight the moon crater Hevelius and the lunar basin Grimaldi located near the western limb of the Moon and viewable before sunrise on

Andrew Planck November 1, 2021November 1, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Basin, Lunar Days in November, Rilles on the Moon, Uncategorized No Comments Read more
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