ISO week 49 2025
This week is currently in preparation and will be published as part of the Star Almanack.
Week begins: Monday, December 1, 2025
Notation:
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Dec 1, 2025 | ♐ 10 | M103, open cluster in Cassiopeia —  V 7.4 — Northern AutumnC8, NGC 559, open cluster in Cassiopeia —  V 9.5 — Northern Autumn |
| Tue, Dec 2, 2025 | ♐ 11 | M33, Triangulum Galaxy, spiral galaxy in Triangulum — V 5.7 — Northern AutumnM74, spiral galaxy in Pisces — V 9.4 — Tropical Autumn |
| Wed, Dec 3, 2025 | ♐ 12 | Achernar (α Eri) —  V 0 — Southern AutumnCetus center — Constellation — V 3.6 — Tropical AutumnM76, Cork Nebula, planetary nebula in Perseus — V 10.1 — Northern Autumn |
| Thu, Dec 4, 2025 | ♐ 13 | 🌕 Full Moon · Moon Before Yule — 23:14:05 UTC |
| Fri, Dec 5, 2025 | ♐ 14 | C10, NGC 663, open cluster in Cassiopeia — V 7.1 — Finest NGC — Northern Autumn |
| Sat, Dec 6, 2025 | ♐ 15 | Mothallah (α Tri) — V 3 — Northern Autumn |
| Sun, Dec 7, 2025 | ♐ 16 | Sheratan (β Ari) — V 3 — Tropical Autumn |
Weekly Solar-System Ephemeris
Snapshot: December 1, 2025 · 00:00 UTC
Notation:
Naked Eye
| ☉︎ Sun | ☽︎ Moon | ☿︎ Mercury | ♀︎ Venus | ♂︎ Mars | ♃︎ Jupiter | ♄︎ Saturn |
|---|---|---|---|---|---|---|
| ♐︎ 9°02′ β +0°00′ | ♈︎ 13°27′ β +2°27′ | ♏︎ 20°51′ β +2°36′ | ♐︎ 0°12′ β +0°42′ | ♐︎ 19°18′ β −0°40′ | ♋︎ 24°32′ β +0°10′ | ♓︎ 25°10′ β −2°22′ |
| Observing | ||||||
| ☉ | | ☉ | ☉ | ☉ | | |
Extended targets:
| ⚳︎ Ceres | ♅︎ Uranus | ♆︎ Neptune | ♇︎ Pluto |
|---|---|---|---|
| ♈︎ 2°46′ β −11°14′ | ♉︎ 29°03′ β −0°12′ | ♓︎ 29°24′ β −1°21′ | ♒︎ 1°54′ β −3°46′ |
| 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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