ISO week 23 2025

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

Week begins: Monday, June 2, 2025

Notation:

Calendar

Date	Zodiac day	Events
Mon, Jun 2, 2025	14	ε Cen — V 2 — Southern Spring M3, globular cluster in Canes Venatici — V 6.2 — Northern Spring
Tue, Jun 3, 2025	15	🌓 First Quarter — 03:40:59 UTC C84, NGC 5286, globular cluster in Centaurus — V 7.6 — Southern Spring
Wed, Jun 4, 2025	16	Alkaid (η UMa) — V 2 — Northern Spring
Thu, Jun 5, 2025	17
Fri, Jun 6, 2025	18
Sat, Jun 7, 2025	19
Sun, Jun 8, 2025	20	Hadar (β Cen) — V 1 — Southern Spring Thuban (α Dra) — V 4 — Northern Spring Menkent (θ Cen) — V 2 — Southern Spring M101, Pinwheel Galaxy, spiral galaxy in Ursa Major — V 7.9 — Northern Spring NGC 5466, globular cluster in Boötes — V 9.2 — Finest NGC — Northern Spring

Weekly Solar-System Ephemeris

Snapshot: June 2, 2025 · 00:00 UTC

Notation:

Naked Eye

☉︎ Sun	☽︎ Moon	☿︎ Mercury	♀︎ Venus	♂︎ Mars	♃︎ Jupiter	♄︎ Saturn
♊︎ 11°44′ β −0°00′	♌︎ 28°25′ β +2°11′	♊︎ 15°14′ β +1°01′	♈︎ 25°53′ β −2°12′	♌︎ 21°36′ β +1°26′	♊︎ 28°13′ β −0°11′	♈︎ 0°33′ β −2°07′
Observing
☉		☉			☉

Extended targets:

⚳︎ Ceres	♅︎ Uranus	♆︎ Neptune	♇︎ Pluto
♈︎ 4°57′ β −9°45′	♉︎ 28°10′ β −0°13′	♈︎ 1°53′ β −1°18′	♒︎ 3°38′ β −3°38′
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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