Star Almanack
Alexander Ferrari Miller

ISO 2026-W37

Week begins: Monday, September 7, 2026

Notation:

Calendar

DateZodiac dayEvents
Mon, Sep 7, 2026♍ 16
Tue, Sep 8, 2026♍ 17
M75 — Telescope 9 — Tropical Summer
Tabby's Star (KIC 8462852) — Telescope — Northern Summer
Wed, Sep 9, 2026♍ 18
Thu, Sep 10, 2026♍ 19
C27 / NGC 6888 · Crescent Nebula / Finest NGC 98 / NGC 6888 · Crescent Nebula — Telescope 8 — Northern Summer
C37 / NGC 6885 — Telescope 6 — Northern Summer
Fri, Sep 11, 2026♍ 20
🌑 New Moon — 03:27:00 UTC
α1 Cap — Binoculars 4 — Tropical Summer
Algedi (α2 Cap) — Binoculars 4 — Tropical Summer
Sat, Sep 12, 2026♍ 21
Dabih (β Cap) — Naked eye 3 — Tropical Summer
Sadr (γ Cyg) — Naked eye 2 — Northern Summer
Sun, Sep 13, 2026♍ 22
M29 — Telescope 7 — Northern Summer
Peacock (α Pav) — Naked eye 2 — Southern Summer

Weekly Solar-System Ephemeris

Snapshot: Week begins September 7, 2026, 00:00 UTC.

(-90° to +90°; defaults +45°, 21:00 LAT)

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♍︎ 14°24′
β +0°00′		♋︎ 19°58′
β +3°23′		♍︎ 23°39′
β +1°07′		♎︎ 27°43′
β −4°10′		♋︎ 17°10′
β +0°38′		♌︎ 14°57′
β +0°32′		♈︎ 13°19′
β −2°40′
ObservingNightNaked eye -8.6☉︎Naked eye -4.7Naked eye 1.2Naked eye -1.8Naked eye 0.5
Rise05:3000:2906:1809:3000:2802:5319:37
Set18:3016:2318:5419:3815:5617:2208:04

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♋︎ 8°53′
β −0°17′		♊︎ 5°41′
β −0°09′		♈︎ 3°31′
β −1°25′		♒︎ 3°24′
β −4°18′
ObservingTelescope 8.9Binoculars 5.7Telescope 7.7TelescopeTelescope 14.5
Rise23:5221:3819:1017:05
Set15:2012:4707:1601:44

β = ecliptic latitude (+ north, − south).
Rise and set are Local Apparent Time for the selected latitude.
Naked-eye observing uses the Sun’s altitude at the selected Monday observer time: Daylight (Sun ≥ −0.833°), Civil twilight (−0.833° to −6°), Nautical twilight (−6° to −12°), Astronomical twilight (−12° to −18°), and Night (below −18°).
Solar Glare identifies a body too close to the Sun when the sky-state rule does not already supersede its naked-eye classification.
The Sun’s observing status uses this same five-state sky classification.

Notation:

Planet Finder

Planet Finder — Greek / Symbols
Greek / Symbols
Planet Finder — English
English
Planet Finder — Mixed Learner
Mixed Learner

Sky Notes

Kilroy: Sky Notes · generated 2026-10-22 04:11:53 UTC

View:

ISO 2026-W37 runs from September 7 through September 13. Venus is about 3.9° in ecliptic longitude from Spica in Virgo. Uranus is about 4.1° in ecliptic longitude from Aldebaran in Taurus.

Naked eye: 🌑 New Moon — 03:27:00 UTC. The dark Moon favors faint targets and extended star fields. Use Dabih, Sadr, Peacock as the week’s fixed-sky framework.

Dabih: The Southern Crowning Star of Capricorn — A detailed overview of Beta Capricorni, highlighting its characteristics and significance within the constellation.

The star in the middle of the Northern Cross — Sadr sits at the intersection of the Northern Cross, making it one of the most useful landmarks in the rich star fields of Cygnus.

The Peacock Star: A Bright Beacon in the Constellation Perseus — An in-depth look at the prominent star Alpha Pavonis, its astronomical significance, and its place in the southern sky.

Planets: Moon: Naked eye; magnitude -8.6; direct motion; 21.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Sep 11 03:26 UTC. Conjunction with Mercury in ecliptic longitude Sep 12 04:21 UTC. Conjunction with Jupiter in ecliptic longitude Sep 08 18:36 UTC. Mercury: In solar glare; magnitude -0.9; direct motion; 95.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Sep 12 04:21 UTC. Venus: Naked eye; magnitude -4.7; direct motion; 34.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 1.2; direct motion; 91.6% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.9; direct motion; 97.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -1.8; direct motion; 99.8% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Sep 08 18:36 UTC. Saturn: Naked eye; magnitude 0.5; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Uranus: Binoculars; magnitude 5.7; direct motion; 99.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Station Sep 10 18:27 UTC: turns retrograde. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: Substantial telescope; magnitude 14.5; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot.

Binoculars: Trace Capricornus’s charted figure in the finder, then identify Alpha1 Cap at its charted position. Trace Capricornus’s closed figure in the finder, then identify Algedi at its charted position.

Alpha1 Cap: A Bright Beacon in the Sea of Capricorn — Discover the characteristics and significance of Alpha1 Cap in the constellation Capricornus.

Algedi: A Stellar Beacon in the Sea of Capella — Discover the enduring allure of Algedi, a distinguished star in the constellation Capricornus, guiding observers through the cosmic ocean.

Small telescope: M75: consult its dedicated finder and observing story for equipment guidance; Crescent Nebula: consult its dedicated finder and observing story for equipment guidance; NGC 6885: consult its dedicated finder and observing story for equipment guidance; M29: consult its dedicated finder and observing story for equipment guidance

M75: A Globular Cluster Hidden in Sagittarius — An exploration of Messier 75, a dense collection of ancient stars residing in the constellation Sagittarius.

The Crescent Nebula: A Stellar Emission Wonder in Cygnus — An overview of this luminous nebula, its characteristics, and significance in the cosmos.

The Open Cluster in Vulpecula: A Celestial Gathering — An enduring feature of the night sky, this open cluster offers a glimpse into stellar formation and evolution.

A small cluster in a crowded city — M29 is easy to underestimate because it sits in one of the richest stellar neighborhoods in the northern Milky Way.

Substantial telescope: No fixed-sky Calendar object is classified as requiring a substantial telescope this week.

Other objects listed this week: None

Mercury

Mercury: in solar glare at the Monday 00:00 UTC snapshot. Rises 06:18; sets 18:54 (45°N, local apparent solar time). Visual magnitude -0.9. The disk is 95.9% illuminated (gibbous). It is 9.3° from the Sun, on its east side. Motion is direct at 1.763° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 3.9° away. Conjunction with Moon in ecliptic longitude Sep 12 04:21 UTC. Mercury: 3.9° from Zavijava in the Pathfinder.

Venus

Venus: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 14.6° below the horizon. Rises 09:30; sets 19:38 (45°N, local apparent solar time). Visual magnitude -4.7. The disk is 34.7% illuminated (crescent). It is 43.5° from the Sun, on its east side. Motion is direct at 0.713° per day in ecliptic longitude at the snapshot. Position reference: Spica, 4.1° away. Venus: 4.1° from Spica in the Pathfinder.

Moon

Moon: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 19.2° below the horizon. Rises 00:29; sets 16:23 (45°N, local apparent solar time). Visual magnitude -8.6. The disk is 21.1% illuminated (waning crescent). It is 54.5° from the Sun, on its west side. Motion is direct at 14.317° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 4.9° away. Mars is 3.9° away at the snapshot. Solar conjunction in ecliptic longitude Sep 11 03:26 UTC. Conjunction with Mercury in ecliptic longitude Sep 12 04:21 UTC. Conjunction with Jupiter in ecliptic longitude Sep 08 18:36 UTC. Moon: 4.9° from Pollux in the Pathfinder.

Mars

Mars: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 21.1° below the horizon. Rises 00:28; sets 15:56 (45°N, local apparent solar time). Visual magnitude 1.2. The disk is 91.6% illuminated (gibbous). It is 57.2° from the Sun, on its west side. Motion is direct at 0.625° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 8.8° away. Moon is 3.9° away at the snapshot. Mars: 8.8° from Pollux in the Pathfinder.

Jupiter

Jupiter: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 26.1° below the horizon. Rises 02:53; sets 17:22 (45°N, local apparent solar time). Visual magnitude -1.8. The disk is 99.8% illuminated (nearly full). It is 29.5° from the Sun, on its west side. Motion is direct at 0.206° per day in ecliptic longitude at the snapshot. Position reference: Acubens, 5.7° away. Conjunction with Moon in ecliptic longitude Sep 08 18:36 UTC. Jupiter: 5.7° from Acubens in the Pathfinder.

Saturn

Saturn: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 14.1° above the horizon. Rises 19:37; sets 08:04 (45°N, local apparent solar time). Visual magnitude 0.5. The disk is 99.9% illuminated (nearly full). It is 151.0° from the Sun, on its west side. Motion is retrograde at 0.063° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 17.5° away. Saturn: 17.5° from Alrescha in the Pathfinder.

Uranus

Uranus: binoculars at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 6.1° below the horizon. Rises 21:38; sets 12:47 (45°N, local apparent solar time). Visual magnitude 5.7. The disk is 99.9% illuminated (nearly full). It is 98.7° from the Sun, on its west side. Motion is direct at 0.003° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 6.9° away. Station Sep 10 18:27 UTC: turns retrograde. Uranus: 6.9° from Aldebaran in the Pathfinder.

Neptune

Neptune: telescope at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 18.6° above the horizon. Rises 19:10; sets 07:16 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 160.8° from the Sun, on its west side. Motion is retrograde at 0.026° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 17.9° away. Neptune: 17.9° from Fumalsamakah in the Pathfinder.

Ceres

Ceres: telescope at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 19.5° below the horizon. Rises 23:52; sets 15:20 (45°N, local apparent solar time). Visual magnitude 8.9. The disk is 97.0% illuminated (gibbous). It is 65.5° from the Sun, on its west side. Motion is direct at 0.329° per day in ecliptic longitude at the snapshot. Position reference: Alhena, 6.5° away. Ceres: 6.5° from Alhena in the Pathfinder.

Pluto

Pluto: substantial telescope at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 21.1° above the horizon. Rises 17:05; sets 01:44 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 138.8° from the Sun, on its east side. Motion is retrograde at 0.016° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.9° away. Pluto: 8.9° from Dabih in the Pathfinder.