ISO week 37 2025

This week is currently in preparation and will be published as part of the Star Almanack.

Week begins: Monday, September 8, 2025

Notation:

Calendar

Date	Zodiac day	Events
Mon, Sep 8, 2025	18	Northern Cross center — Asterism — V 1.2 — Northern Summer
Tue, Sep 9, 2025	19	C27, NGC 6888, Crescent Nebula, bright nebula in Cygnus — V 7.5 — Finest NGC — Northern Summer C37, NGC 6885, open cluster in Vulpecula — V 5.7 — Northern Summer
Wed, Sep 10, 2025	20	M29, open cluster in Cygnus — V 7.1 — Northern Summer
Thu, Sep 11, 2025	21	α1 Cap — V 4 — Tropical Summer Algedi (α2 Cap) — V 4 — Tropical Summer Vulpecula center — Constellation — V 4.5 — Northern Summer
Fri, Sep 12, 2025	22	Dabih (β Cap) — V 3 — Tropical Summer Sadr (γ Cyg) — V 2 — Northern Summer
Sat, Sep 13, 2025	23	Peacock (α Pav) — V 2 — Southern Summer
Sun, Sep 14, 2025	24	🌗 Last Quarter — 10:32:58 UTC

Weekly Solar-System Ephemeris

Snapshot: September 8, 2025 · 00:00 UTC

Notation:

Naked Eye

☉︎ Sun	☽︎ Moon	☿︎ Mercury	♀︎ Venus	♂︎ Mars	♃︎ Jupiter	♄︎ Saturn
♍︎ 15°37′ β −0°00′	♓︎ 18°51′ β +0°03′	♍︎ 10°31′ β +1°47′	♌︎ 16°00′ β +0°28′	♎︎ 20°29′ β +0°10′	♋︎ 19°05′ β −0°01′	♓︎ 29°31′ β −2°30′
Observing
☉		☉

Extended targets:

⚳︎ Ceres	♅︎ Uranus	♆︎ Neptune	♇︎ Pluto
♈︎ 14°36′ β −14°52′	♊︎ 1°28′ β −0°13′	♈︎ 1°11′ β −1°22′	♒︎ 1°40′ β −3°47′
Observing

β = ecliptic latitude (+ north, − south). Observing combines visual magnitude with solar elongation. Two telescope glyphs = substantial telescope. ☉ = Near Sun — not currently observable.

Notation:

Planet Finder

Planet Finder — Mixed Learner — Mixed Learner

Sky Notes

Naked eye

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Binoculars

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Telescope

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