Star Almanack
Alexander Ferrari Miller

ISO 2027-W43

Week begins: Monday, October 25, 2027

Notation:

Calendar

DateZodiac dayEvents
Mon, Oct 25, 2027♏ 3
C9 / Sh2-155 · Cave Nebula — Telescope 8 — Northern Autumn
Fomalhaut (α PsA) — Naked eye 1 — Southern Autumn
Tue, Oct 26, 2027♏ 4
Wed, Oct 27, 2027♏ 5
Scheat (β Peg) — Naked eye 2 — Northern Autumn
Fumalsamakah (β Psc) — Binoculars 4 — Tropical Autumn
Markab (α Peg) — Naked eye 2 — Tropical Autumn
C44 / NGC 7479 — Telescope 11 — Tropical Autumn
Thu, Oct 28, 2027♏ 6
Fri, Oct 29, 2027♏ 7
🌑 New Moon — 13:36:35 UTC
Sat, Oct 30, 2027♏ 8
Sun, Oct 31, 2027♏ 9
C11 / NGC 7635 · Bubble Nebula / Finest NGC 4 / NGC 7635 · Bubble Nebula — Telescope 7 — Northern Autumn

Weekly Solar-System Ephemeris

Snapshot: Week begins October 25, 2027, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♏︎ 1°21′
β −0°00′		♍︎ 1°15′
β −2°01′		♎︎ 20°32′
β +0°28′		♏︎ 20°55′
β −0°02′		♐︎ 6°29′
β −0°48′		♍︎ 19°01′
β +1°01′		♈︎ 23°52′
β −2°47′
ObservingNightNaked eye -8.9☉︎☉︎Naked eye 1.3Naked eye -1.8Naked eye 0.1
Rise06:4301:3305:4708:2909:5302:5917:06
Set17:1714:5416:5318:0518:4915:5006:05

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♎︎ 8°47′
β +7°45′		♊︎ 9°19′
β −0°06′		♈︎ 4°32′
β −1°28′		♒︎ 4°46′
β −4°46′
ObservingTelescope 8.7Binoculars 5.6Telescope 7.7TelescopeTelescope 14.6
Rise04:2918:5616:1814:17
Set17:0610:1104:2722:56

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 22:17:18 UTC

View:

ISO 2027-W43 runs from October 25 through October 31. Uranus is about 0.5° in ecliptic longitude from Aldebaran in Taurus. Mercury is about 3.3° in ecliptic longitude from Spica in Virgo.

Naked eye: 🌑 New Moon — 13:36:35 UTC. The dark Moon favors faint targets and extended star fields. Use Fomalhaut, Scheat, Markab as the week’s fixed-sky framework.

Fomalhaut: The Autumn Bright Star in Piscis Austrinus — A guide to the characteristics and significance of the prominent star Fomalhaut in the southern sky.

Scheat: A Bright Star at the Heart of Pegasus — An illuminating guide to the star's characteristics and celestial significance.

Markab: The Bright Star of Pegasus’s Square — An illuminating guide to one of the prominent stars forming the Great Square asterism.

Planets: Moon: Naked eye; magnitude -8.9; direct motion; 25.2% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Oct 29 13:36 UTC. Conjunction with Mercury in ecliptic longitude Oct 28 09:03 UTC. Conjunction with Venus in ecliptic longitude Oct 31 06:00 UTC. Conjunction with Ceres in ecliptic longitude Oct 27 17:14 UTC. Conjunction with Jupiter in ecliptic longitude Oct 26 06:15 UTC. Mercury: In solar glare; magnitude 2.0; retrograde motion; 10.0% illuminated. Monday 00:00 UTC snapshot. Station Oct 28 14:10 UTC: turns direct. Conjunction with Moon in ecliptic longitude Oct 28 09:03 UTC. Venus: In solar glare; magnitude -3.9; direct motion; 94.4% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 31 06:00 UTC. Mars: Naked eye; magnitude 1.3; direct motion; 96.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.7; direct motion; 99.4% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 27 17:14 UTC. Jupiter: Naked eye; magnitude -1.8; direct motion; 99.6% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 26 06:15 UTC. Saturn: Naked eye; magnitude 0.1; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Uranus: Binoculars; magnitude 5.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: Substantial telescope; magnitude 14.6; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot.

Binoculars: Trace Pisces’s charted figure in the finder, then identify Fumalsamakah at its charted position.

Fumalsamakah: A Noble Star in Pisces — Illuminating the celestial landscape with its steady glow, Fumalsamakah is a noteworthy star in the constellation Pisces.

Small telescope: Cave Nebula: consult its dedicated finder and observing story for equipment guidance; NGC 7479: consult its dedicated finder and observing story for equipment guidance; Bubble Nebula: consult its dedicated finder and observing story for equipment guidance

The Cave Nebula: A Majestic Emission Nebula in Cepheus — An exploration of the Cave Nebula's characteristics and significance within the celestial tapestry of Cepheus.

Unveiling Caldwell C44: A Stellar Gem in Pegasus — An exploration of a captivating barred spiral galaxy that enriches our understanding of cosmic structures.

The Bubble Nebula: A Celestial Cloud in Cassiopeia — An exploration of one of the most iconic emission nebulae in the night sky, detailing its astrophysical significance and guiding observers in locating it.

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 05:47; sets 16:53 (45°N, local apparent solar time). Visual magnitude 2.0. The disk is 10.0% illuminated (crescent). It is 10.8° from the Sun, on its west side. Motion is retrograde at 0.672° per day in ecliptic longitude at the snapshot. Position reference: Spica, 4.5° away. Station Oct 28 14:10 UTC: turns direct. Conjunction with Moon in ecliptic longitude Oct 28 09:03 UTC. Mercury: 4.5° from Spica in the Pathfinder.

Venus

Venus: in solar glare at the Monday 00:00 UTC snapshot. Rises 08:29; sets 18:05 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 94.4% illuminated (gibbous). It is 19.6° from the Sun, on its east side. Motion is direct at 1.242° per day in ecliptic longitude at the snapshot. Position reference: Zubenelgenubi, 5.5° away. Conjunction with Moon in ecliptic longitude Oct 31 06:00 UTC. Venus: 5.5° from Zubenelgenubi 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 34.7° below the horizon. Rises 01:33; sets 14:54 (45°N, local apparent solar time). Visual magnitude -8.9. The disk is 25.2% illuminated (waning crescent). It is 60.1° from the Sun, on its west side. Motion is direct at 14.249° per day in ecliptic longitude at the snapshot. Position reference: Regulus, 2.7° away. Solar conjunction in ecliptic longitude Oct 29 13:36 UTC. Conjunction with Mercury in ecliptic longitude Oct 28 09:03 UTC. Conjunction with Venus in ecliptic longitude Oct 31 06:00 UTC. Conjunction with Ceres in ecliptic longitude Oct 27 17:14 UTC. Conjunction with Jupiter in ecliptic longitude Oct 26 06:15 UTC. Moon: 2.7° from Regulus 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 22.2° below the horizon. Rises 09:53; sets 18:49 (45°N, local apparent solar time). Visual magnitude 1.3. The disk is 96.0% illuminated (gibbous). It is 35.1° from the Sun, on its east side. Motion is direct at 0.723° per day in ecliptic longitude at the snapshot. Position reference: Acrab, 3.4° away. Mars: 3.4° from Acrab 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 39.3° below the horizon. Rises 02:59; sets 15:50 (45°N, local apparent solar time). Visual magnitude -1.8. The disk is 99.6% illuminated (nearly full). It is 42.3° from the Sun, on its west side. Motion is direct at 0.186° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 8.5° away. Conjunction with Moon in ecliptic longitude Oct 26 06:15 UTC. Jupiter: 8.5° from Zavijava 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 38.8° above the horizon. Rises 17:06; sets 06:05 (45°N, local apparent solar time). Visual magnitude 0.1. The disk is 100.0% illuminated (nearly full). It is 172.0° from the Sun, on its east side. Motion is retrograde at 0.079° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 8.6° away. Saturn: 8.6° 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 19.7° above the horizon. Rises 18:56; sets 10:11 (45°N, local apparent solar time). Visual magnitude 5.6. The disk is 100.0% illuminated (nearly full). It is 142.0° from the Sun, on its west side. Motion is retrograde at 0.030° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 5.4° away. Uranus: 5.4° 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 41.7° above the horizon. Rises 16:18; sets 04:27 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 153.2° from the Sun, on its east side. Motion is retrograde at 0.024° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 18.7° away. Neptune: 18.7° 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 35.6° below the horizon. Rises 04:29; sets 17:06 (45°N, local apparent solar time). Visual magnitude 8.7. The disk is 99.4% illuminated (nearly full). It is 23.8° from the Sun, on its west side. Motion is direct at 0.450° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 13.2° away. Conjunction with Moon in ecliptic longitude Oct 27 17:14 UTC. Ceres: 13.2° from Zavijava 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 13.8° above the horizon. Rises 14:17; sets 22:56 (45°N, local apparent solar time). Visual magnitude 14.6. The disk is 100.0% illuminated (nearly full). It is 93.4° from the Sun, on its east side. Motion is direct at 0.003° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 9.4° away. Pluto: 9.4° from Dabih in the Pathfinder.