Star Almanack
Alexander Ferrari Miller

ISO 2025-W28

Week begins: Monday, July 7, 2025

Notation:

Calendar

DateZodiac dayEvents
Mon, Jul 7, 2025♋ 17
Acrab (β1 Sco) — Naked eye 3 — Tropical Summer
β2 Sco — Binoculars 5 — Tropical Summer
Tue, Jul 8, 2025♋ 18
Wed, Jul 9, 2025♋ 19
Thu, Jul 10, 2025♋ 20
🌕 Full Moon · Hay Moon — 20:36:47 UTC
M80 — Telescope 7 — Tropical Summer
C89 / NGC 6087 · S Normae Cluster — Telescope 5 — Southern Summer
Fri, Jul 11, 2025♋ 21
M4 — Telescope 6 — Southern Summer
Sat, Jul 12, 2025♋ 22
C75 / NGC 6124 — Telescope 6 — Southern Summer
C107 / NGC 6101 — Telescope 9 — Antarctic Summer
Sun, Jul 13, 2025♋ 23
Antares (α Sco) / Antares (α Scorpii) — Naked eye 1 — Southern Summer
Kornephoros (β Her) — Naked eye 3 — Tropical Summer

Weekly Solar-System Ephemeris

Snapshot: Week begins July 7, 2025, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♋︎ 15°09′
β −0°00′		♐︎ 0°57′
β −4°45′		♌︎ 10°52′
β −0°35′		♊︎ 2°36′
β −2°30′		♍︎ 11°16′
β +0°56′		♋︎ 6°11′
β −0°07′		♈︎ 1°54′
β −2°16′
ObservingNightNaked eye -11.4Naked eye 0.7Naked eye -4.1Naked eye 1.5☉︎Naked eye 0.9
Rise04:1616:3206:3201:3809:1003:3623:08
Set19:4400:5821:0216:1922:2419:0611:02

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♈︎ 13°20′
β −11°24′		♉︎ 29°59′
β −0°13′		♈︎ 2°10′
β −1°20′		♒︎ 3°01′
β −3°43′
ObservingTelescope 8.9Binoculars 5.8Telescope 7.8TelescopeTelescope 14.4
Rise00:2001:1723:0320:57
Set11:4316:1411:0605:42

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 12:11:50 UTC

View:

ISO 2025-W28 runs from July 7 through July 13. Saturn and Neptune are separated by about 0.3° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Venus and Uranus are separated by about 2.6° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.

Naked eye: 🌕 Full Moon · Hay Moon — 20:36:47 UTC. Bright moonlight favors prominent stars and planets while reducing contrast on faint deep-sky objects. Use Acrab, Antares, Kornephoros as the week’s fixed-sky framework.

Acrab: The Bright Star in Scorpius's Tail — A closer look at one of the prominent stars marking the scorpion's curve.

Antares: The Heart of Scorpius, a Standout Stellar Beacon — A comprehensive overview of Antares, one of the sky's most luminous and distinctive red supergiants, guiding stargazers through its celestial significance.

Kornephoros: The Bright Star of Hercules — An in-depth look at the star β Herculis, illuminating its significance within the constellation Hercules.

Planets: Moon: Naked eye; magnitude -11.4; direct motion; 85.8% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Jul 10 20:36 UTC. Conjunction with Pluto in ecliptic longitude Jul 11 22:41 UTC. Mercury: Naked eye; magnitude 0.7; direct motion; 36.3% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Venus: Naked eye; magnitude -4.1; direct motion; 66.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 1.5; direct motion; 92.8% illuminated. 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: In solar glare; magnitude -1.9; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 0.9; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Station Jul 13 04:06 UTC: turns retrograde. Uranus: Binoculars; magnitude 5.8; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Neptune: Telescope; magnitude 7.8; retrograde motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Pluto: Substantial telescope; magnitude 14.4; retrograde motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jul 11 22:41 UTC.

Binoculars: Trace Scorpius’s charted figure in the finder, then identify Beta2 Sco at its charted position.

Beta2 Scorpii: A Bright Beacon in the Southern Sky — An exploration of the star Beta2 Scorpii, its characteristics, and its place in the constellation Scorpius.

Small telescope: M80: consult its dedicated finder and observing story for equipment guidance; S Normae Cluster: consult its dedicated finder and observing story for equipment guidance; M4: consult its dedicated finder and observing story for equipment guidance; NGC 6124: consult its dedicated finder and observing story for equipment guidance; NGC 6101: consult its dedicated finder and observing story for equipment guidance

M80: A Compact Globular Cluster in Scorpius — Exploring the characteristics and significance of Messier 80, a dense stellar congregation in the constellation Scorpius.

S Normae Cluster: A Bright Beacon in the Southern Sky — An open star cluster located in the constellation Norma, offering a stunning view for astronomers and stargazers alike.

M4: A Bright Beacon in the Scorpius Constellation — Discover the beauty and significance of this prominent globular cluster in the heart of Scorpius.

Exploring the Mysteries of the Sagittarius Open Cluster — A detailed overview of a notable open star cluster located in the constellation Sagittarius, highlighting its astronomical significance.

Unveiling the Mysteries of Globular Cluster Caldwell C107 in the Constellation Aps — A stable celestial jewel, Caldwell C107 offers astronomers a glimpse into the ancient universe.

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

Other objects listed this week: None

Mercury

Mercury: naked eye at the Monday 00:00 UTC snapshot. At 45°N and 21:00 local apparent solar time, it is 0.3° below the horizon. Rises 06:32; sets 21:02 (45°N, local apparent solar time). Visual magnitude 0.7. The disk is 36.3% illuminated (crescent). It is 25.7° from the Sun, on its east side. Motion is direct at 0.796° per day in ecliptic longitude at the snapshot. Position reference: Acubens, 5.5° away. Mercury: 5.5° from Acubens 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 26.8° below the horizon. Rises 01:38; sets 16:19 (45°N, local apparent solar time). Visual magnitude -4.1. The disk is 66.1% illuminated (gibbous). It is 42.6° from the Sun, on its west side. Motion is direct at 1.108° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 8.1° away. Uranus is 3.5° away at the snapshot. Venus: 8.1° from Aldebaran 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 20.0° above the horizon. Rises 16:32; sets 00:58 (45°N, local apparent solar time). Visual magnitude -11.4. The disk is 85.8% illuminated (waxing gibbous). It is 135.6° from the Sun, on its east side. Motion is direct at 12.031° per day in ecliptic longitude at the snapshot. Position reference: Dschubba, 3.4° away. Opposition in ecliptic longitude Jul 10 20:36 UTC. Conjunction with Pluto in ecliptic longitude Jul 11 22:41 UTC. Moon: 3.4° from Dschubba 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 14.1° above the horizon. Rises 09:10; sets 22:24 (45°N, local apparent solar time). Visual magnitude 1.5. The disk is 92.8% illuminated (gibbous). It is 56.1° from the Sun, on its east side. Motion is direct at 0.587° per day in ecliptic longitude at the snapshot. Position reference: Regulus, 11.1° away. Mars: 11.1° from Regulus in the Pathfinder.

Jupiter

Jupiter: in solar glare at the Monday 00:00 UTC snapshot. Rises 03:36; sets 19:06 (45°N, local apparent solar time). Visual magnitude -1.9. The disk is 100.0% illuminated (nearly full). It is 9.0° from the Sun, on its west side. Motion is direct at 0.227° per day in ecliptic longitude at the snapshot. Position reference: Alhena, 7.4° away. Jupiter: 7.4° 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 22.6° below the horizon. Rises 23:08; sets 11:02 (45°N, local apparent solar time). Visual magnitude 0.9. The disk is 99.7% illuminated (nearly full). It is 103.2° from the Sun, on its west side. Motion is direct at 0.010° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 17.2° away. Neptune is 1.0° away at the snapshot. Station Jul 13 04:06 UTC: turns retrograde. Saturn: 17.2° 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 25.1° below the horizon. Rises 01:17; sets 16:14 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 45.2° from the Sun, on its west side. Motion is direct at 0.045° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 11.4° away. Venus is 3.5° away at the snapshot. Uranus: 11.4° 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 21.8° below the horizon. Rises 23:03; sets 11:06 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 103.0° from the Sun, on its west side. Motion is retrograde at 0.001° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.8° away. Saturn is 1.0° away at the snapshot. Neptune: 16.8° 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 34.5° below the horizon. Rises 00:20; sets 11:43 (45°N, local apparent solar time). Visual magnitude 8.9. The disk is 97.0% illuminated (gibbous). It is 91.8° from the Sun, on its west side. Motion is direct at 0.181° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 13.7° away. Ceres: 13.7° from Diphda 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 0.1° below the horizon. Rises 20:57; sets 05:42 (45°N, local apparent solar time). Visual magnitude 14.4. The disk is 100.0% illuminated (nearly full). It is 161.8° from the Sun, on its west side. Motion is retrograde at 0.022° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.4° away. Conjunction with Moon in ecliptic longitude Jul 11 22:41 UTC. Pluto: 8.4° from Dabih in the Pathfinder.