ISO week 42 2025
This week is currently in preparation and will be published as part of the Star Almanack.
Week begins: Monday, October 13, 2025
Notation:
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Oct 13, 2025 | ♎ 22 | 🌗 Last Quarter — 18:12:42 UTC C16, NGC 7243, open cluster in Lacerta —  V 6.4 — Northern Autumn |
| Tue, Oct 14, 2025 | ♎ 23 | α Tuc —  V 3 — Southern AutumnPiscis Austrinus center — Constellation — V 4.3 — Southern Autumn |
| Wed, Oct 15, 2025 | ♎ 24 | Cepheus center — Constellation — V 3.5 — Arctic Autumn |
| Thu, Oct 16, 2025 | ♎ 25 | β Lac — V 4 — Northern Autumn — in the Milky WayAquarius center — Constellation — V 3.9 — Tropical Autumn |
| Fri, Oct 17, 2025 | ♎ 26 | Lacerta center — Constellation — V 4.5 — Northern AutumnWater Jar center — Asterism — V 3.6 — Tropical AutumnC63, NGC 7293, Helix Nebula, planetary nebula in Aquarius — V 6.5 — Finest NGC — Tropical Autumn |
| Sat, Oct 18, 2025 | ♎ 27 | α Lac — V 4 — Northern Autumn — in the Milky Wayβ PsA — V 4 — Southern AutumnGrus center — Constellation — V 3.7 — Southern Autumn |
| Sun, Oct 19, 2025 | ♎ 28 | C30, NGC 7331, Deer Lick Group, spiral galaxy in Pegasus —  V 9.5 — Finest NGC — Northern Autumn |
Weekly Solar-System Ephemeris
Snapshot: October 13, 2025 · 00:00 UTC
Notation:
Naked Eye
| ☉︎ Sun | ☽︎ Moon | ☿︎ Mercury | ♀︎ Venus | ♂︎ Mars | ♃︎ Jupiter | ♄︎ Saturn |
|---|---|---|---|---|---|---|
| ♎︎ 19°55′ β +0°00′ | ♋︎ 10°12′ β +4°49′ | ♏︎ 9°15′ β −1°31′ | ♍︎ 28°54′ β +1°30′ | ♏︎ 14°06′ β −0°12′ | ♋︎ 23°45′ β +0°03′ | ♓︎ 26°53′ β −2°30′ |
| Observing | ||||||
| ☉ | | ☉ | | | | |
Extended targets:
| ⚳︎ Ceres | ♅︎ Uranus | ♆︎ Neptune | ♇︎ Pluto |
|---|---|---|---|
| ♈︎ 7°17′ β −14°48′ | ♊︎ 0°55′ β −0°13′ | ♈︎ 0°14′ β −1°22′ | ♒︎ 1°22′ 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
Sky Notes
Naked eye
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Binoculars
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Telescope
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