ISO week 39 2027

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

Week begins: Monday, September 27, 2027

Notation:

Calendar

Date	Zodiac day	Events
Mon, Sep 27, 2027	5	Equuleus center — Constellation — V 4.2 — Tropical Autumn Octans center — Constellation — V 4.1 — Antarctic Autumn
Tue, Sep 28, 2027	6	Alderamin (α Cep) — V 2 — Northern Autumn Kitalpha (α Equ) — V 4 — Tropical Autumn
Wed, Sep 29, 2027	7
Thu, Sep 30, 2027	8	🌑 New Moon — 02:36:05 UTC β Equ — V 5 — Tropical Autumn
Fri, Oct 1, 2027	9	Alfirk (β Cep) — V 3 — Arctic Autumn Indus center — Constellation — V 4.0 — Southern Autumn
Sat, Oct 2, 2027	10	Sadalsuud (β Aqr) — V 3 — Tropical Autumn M15, Great Pegasus Cluster, globular cluster in Pegasus — V 6.2 — Tropical Autumn M39, open cluster in Cygnus — V 4.6 — Northern Autumn
Sun, Oct 3, 2027	11	M2, globular cluster in Aquarius — V 6.5 — Tropical Autumn

Weekly Solar-System Ephemeris

Snapshot: September 27, 2027 · 00:00 UTC

Notation:

Naked Eye

☉︎ Sun	☽︎ Moon	☿︎ Mercury	♀︎ Venus	♂︎ Mars	♃︎ Jupiter	♄︎ Saturn
♎︎ 3°40′ β −0°00′	♌︎ 21°10′ β −0°58′	♎︎ 29°40′ β −2°59′	♎︎ 16°07′ β +1°01′	♏︎ 16°43′ β −0°33′	♍︎ 13°26′ β +0°57′	♈︎ 26°01′ β −2°46′
Observing
☉			☉

Extended targets:

⚳︎ Ceres	♅︎ Uranus	♆︎ Neptune	♇︎ Pluto
♍︎ 26°02′ β +7°38′	♊︎ 9°54′ β −0°06′	♈︎ 5°17′ β −1°28′	♒︎ 4°51′ β −4°48′
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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