Star Almanack
Alexander Ferrari Miller

ISO 2025-W33

Week begins: Monday, August 11, 2025

Notation:

Calendar

DateZodiac dayEvents
Mon, Aug 11, 2025♌ 21
Kaus Australis (ε Sgr) — Naked eye 2 — Southern Summer
M28 — Telescope 7 — Southern Summer
Tue, Aug 12, 2025♌ 22
α Tel — Naked eye 3 — Southern Summer
Finest NGC 93 / NGC 6633 · Collinder 380 — Telescope 6 — Tropical Summer
Wed, Aug 13, 2025♌ 23
M69 — Telescope 8 — Southern Summer
M25 — Telescope 7 — Tropical Summer
Thu, Aug 14, 2025♌ 24
α Sct — Binoculars 4 — Tropical Summer
M22 — Telescope 5 — Southern Summer
Vega (α Lyr) / Vega (α Lyrae) — Naked eye 0 — Northern Summer
Fri, Aug 15, 2025♌ 25
Sat, Aug 16, 2025♌ 26
🌗 Last Quarter — 05:12:14 UTC
M70 — Telescope 8 — Southern Summer
Sun, Aug 17, 2025♌ 27
M26 — Telescope 8 — Tropical Summer
β Sct — Binoculars 4 — Tropical Summer

Weekly Solar-System Ephemeris

Snapshot: Week begins August 11, 2025, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♌︎ 18°36′
β −0°00′		♓︎ 9°52′
β −0°47′		♌︎ 4°15′
β −3°13′		♋︎ 12°37′
β −1°00′		♎︎ 2°31′
β +0°30′		♋︎ 13°49′
β −0°04′		♈︎ 1°15′
β −2°25′
ObservingNightNaked eye -12.2☉︎Naked eye -4.0Naked eye 1.6Naked eye -1.9Naked eye 0.7
Rise04:5119:5503:4801:5208:4401:5320:49
Set19:0906:5118:1017:0920:4817:1808:40

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♈︎ 16°48′
β −13°27′		♊︎ 1°11′
β −0°13′		♈︎ 1°49′
β −1°21′		♒︎ 2°12′
β −3°46′
ObservingTelescope 8.5Binoculars 5.8Telescope 7.7TelescopeTelescope 14.4
Rise22:1923:0320:4418:36
Set09:3814:0208:4503:19

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 2026-10-23 13:59:31 UTC

View:

ISO 2025-W33 runs from August 11 through August 17. Saturn and Neptune are separated by about 0.6° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Venus and Jupiter are separated by about 1.2° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.

Naked eye: 🌗 Last Quarter — 05:12:14 UTC. Moderate moonlight makes timing and local sky position important for faint targets. Use Kaus Australis, α Tel, Vega as the week’s fixed-sky framework.

Kaus Australis: The Bright Star of Sagittarius' Teapot — A detailed look at one of the prominent stars in the Sagittarius constellation, renowned for its brightness and cultural significance.

Alpha Telescopii: A Bright Beacon in the Tel Constellation — Discover the characteristics and significance of Alpha Tel, a notable star in Tel, and its place in our celestial understanding.

Vega: The Bright Star of Lyra and the Summer Triangle — An illuminating guide to Vega, a key stellar landmark in the summer sky and the famed centerpiece of the Summer Triangle.

Planets: Moon: Naked eye; magnitude -12.2; direct motion; 96.6% illuminated. Monday 00:00 UTC snapshot. Conjunction with Ceres in ecliptic longitude Aug 13 15:02 UTC. Conjunction with Saturn in ecliptic longitude Aug 12 12:33 UTC. Conjunction with Uranus in ecliptic longitude Aug 16 18:11 UTC. Conjunction with Neptune in ecliptic longitude Aug 12 13:36 UTC. Mercury: In solar glare; magnitude 1.8; retrograde motion; 13.9% illuminated. Monday 00:00 UTC snapshot. Station Aug 11 07:29 UTC: turns direct. Venus: Naked eye; magnitude -4.0; direct motion; 78.3% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Jupiter in ecliptic longitude Aug 12 05:30 UTC. Mars: Naked eye; magnitude 1.6; direct motion; 94.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.5; direct motion; 97.8% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Station Aug 11 21:37 UTC: turns retrograde. Conjunction with Moon in ecliptic longitude Aug 13 15:02 UTC. Jupiter: Naked eye; magnitude -1.9; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Venus in ecliptic longitude Aug 12 05:30 UTC. Saturn: Naked eye; magnitude 0.7; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Aug 12 12:33 UTC. Uranus: Binoculars; magnitude 5.8; direct motion; 99.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Aug 16 18:11 UTC. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Aug 12 13:36 UTC. Pluto: Substantial telescope; magnitude 14.4; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot.

Binoculars: Trace Scutum’s diamond-shaped figure in the finder, then identify α Sct at its charted position. Trace Scutum’s diamond-shaped figure in the finder, then identify β Sct at its charted position.

Alpha Scuti: The Bright Beacon of the Scutum Constellation — An enduring stellar landmark, Alpha Scuti offers a glimpse into the majestic complexity of our celestial neighborhood.

Beta Scuti: A Bright Star in the Scutum Constellation — An overview of Beta Scuti, its position, and significance among the celestial figures.

Small telescope: M28: consult its dedicated finder and observing story for equipment guidance; Collinder 380: consult its dedicated finder and observing story for equipment guidance; M69: consult its dedicated finder and observing story for equipment guidance; M25: consult its dedicated finder and observing story for equipment guidance; Sagittarius Cluster: consult its dedicated finder and observing story for equipment guidance; M70: consult its dedicated finder and observing story for equipment guidance; M26: consult its dedicated finder and observing story for equipment guidance

M28: A Dense Glimpse into the Heart of Sagittarius — Discover the enduring allure of this ancient globular cluster nestled in the constellation Sagittarius.

Exploring Collinder 380: A Promising Open Cluster in Ophiuchus — An overview of Collinder 380, its location, and significance within the constellation of Ophiuchus.

M69: A Compact Globular Cluster in Sagittarius — Exploring the characteristics and significance of Messier 69 in the constellation Sagittarius.

M25: The Cosmic Necklace in Sagittarius — An enduring celestial gem, M25 is a magnificent open cluster nestled in the heart of the Sagittarius constellation.

Sagittarius Cluster: A Timeless Globular Treasure in the Heart of the Milky Way — An enduring marvel of the night sky, the Sagittarius Cluster invites skywatchers to explore its ancient stellar population and cosmic significance.

M70: A Globular Treasure in Sagittarius — An enduring stellar assembly nestled in the constellation Sagittarius, M70 invites exploration of ancient star clusters.

M26: The Open Cluster in Sagittarius — An inviting stellar assembly offering a glimpse into the dynamic fabric of our galaxy.

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 03:48; sets 18:10 (45°N, local apparent solar time). Visual magnitude 1.8. The disk is 13.9% illuminated (crescent). It is 14.7° from the Sun, on its west side. Motion is retrograde at 0.035° per day in ecliptic longitude at the snapshot. Position reference: Tarf, 7.1° away. Station Aug 11 07:29 UTC: turns direct. Mercury: 7.1° from Tarf 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 22.8° below the horizon. Rises 01:52; sets 17:09 (45°N, local apparent solar time). Visual magnitude -4.0. The disk is 78.3% illuminated (gibbous). It is 36.0° from the Sun, on its west side. Motion is direct at 1.173° per day in ecliptic longitude at the snapshot. Position reference: Alhena, 6.6° away. Jupiter is 1.5° away at the snapshot. Conjunction with Jupiter in ecliptic longitude Aug 12 05:30 UTC. Venus: 6.6° from Alhena 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 10.4° above the horizon. Rises 19:55; sets 06:51 (45°N, local apparent solar time). Visual magnitude -12.2. The disk is 96.6% illuminated (waning gibbous). It is 158.7° from the Sun, on its west side. Motion is direct at 13.869° per day in ecliptic longitude at the snapshot. Position reference: Sadalmelik, 13.0° away. Conjunction with Ceres in ecliptic longitude Aug 13 15:02 UTC. Conjunction with Saturn in ecliptic longitude Aug 12 12:33 UTC. Conjunction with Uranus in ecliptic longitude Aug 16 18:11 UTC. Conjunction with Neptune in ecliptic longitude Aug 12 13:36 UTC. Moon: 13.0° from Sadalmelik 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 2.8° below the horizon. Rises 08:44; sets 20:48 (45°N, local apparent solar time). Visual magnitude 1.6. The disk is 94.9% illuminated (gibbous). It is 43.9° from the Sun, on its east side. Motion is direct at 0.627° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 5.0° away. Mars: 5.0° from Zavijava 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 21.8° below the horizon. Rises 01:53; sets 17:18 (45°N, local apparent solar time). Visual magnitude -1.9. The disk is 99.7% illuminated (nearly full). It is 34.8° from the Sun, on its west side. Motion is direct at 0.205° per day in ecliptic longitude at the snapshot. Position reference: Alhena, 8.0° away. Venus is 1.5° away at the snapshot. Conjunction with Venus in ecliptic longitude Aug 12 05:30 UTC. Jupiter: 8.0° from Alhena 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 1.4° above the horizon. Rises 20:49; sets 08:40 (45°N, local apparent solar time). Visual magnitude 0.7. The disk is 99.9% illuminated (nearly full). It is 137.3° from the Sun, on its west side. Motion is retrograde at 0.046° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.8° away. Neptune is 1.2° away at the snapshot. Conjunction with Moon in ecliptic longitude Aug 12 12:33 UTC. Saturn: 16.8° from Fumalsamakah 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 16.7° below the horizon. Rises 23:03; sets 14:02 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 99.9% illuminated (nearly full). It is 77.4° from the Sun, on its west side. Motion is direct at 0.022° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 10.4° away. Conjunction with Moon in ecliptic longitude Aug 16 18:11 UTC. Uranus: 10.4° 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 2.2° above the horizon. Rises 20:44; sets 08:45 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 136.8° from the Sun, on its west side. Motion is retrograde at 0.018° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.5° away. Saturn is 1.2° away at the snapshot. Conjunction with Moon in ecliptic longitude Aug 12 13:36 UTC. Neptune: 16.5° 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 14.5° below the horizon. Rises 22:19; sets 09:38 (45°N, local apparent solar time). Visual magnitude 8.5. The disk is 97.8% illuminated (gibbous). It is 120.8° from the Sun, on its west side. Motion is direct at 0.005° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 13.4° away. Station Aug 11 21:37 UTC: turns retrograde. Conjunction with Moon in ecliptic longitude Aug 13 15:02 UTC. Ceres: 13.4° from Alrescha 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 16.5° above the horizon. Rises 18:36; sets 03:19 (45°N, local apparent solar time). Visual magnitude 14.4. The disk is 100.0% illuminated (nearly full). It is 163.2° from the Sun, on its east side. Motion is retrograde at 0.022° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.6° away. Pluto: 8.6° from Dabih in the Pathfinder.