Star Almanack
Alexander Ferrari Miller

ISO 2026-W25

ISO dates: 2026-W25-1 through 2026-W25-7

Civil dates: Jun 15, 2026 – Jun 21, 2026

Notation:

Calendar

DateZodiac dayEvents
Mon, Jun 15, 2026♊ 26
Boötes center — Constellation — Binoculars V 3.5 — Northern Spring
Ursa Minor center — Constellation — Binoculars V 4.2 — Arctic Spring
🌑 New Moon — 02:54:10 UTC
η Cen — Naked eye 2 — Southern Spring
Tue, Jun 16, 2026♊ 27
C66, NGC 5694, globular cluster in Hydra — Telescope V 10.2 — Southern Spring
C66 / NGC 5694 — Telescope 10 — Southern Spring
Rigil Kentaurus (α Cen) — Naked eye 0 — Southern Spring
Wed, Jun 17, 2026♊ 28
α Lup — Naked eye 2 — Southern Spring
α Cir — Naked eye 3 — Southern Spring
Thu, Jun 18, 2026♊ 29
NGC 5746, galaxy in Virgo — Telescope V 11.4 — Finest NGC — Tropical Spring
Finest NGC 85 / NGC 5746 · MCG 0-38-5 — Telescope 11 — Tropical Spring
Izar (ε Boo) — Naked eye 2 — Northern Spring
α Aps — Binoculars 4 — Antarctic Spring
Fri, Jun 19, 2026♊ 30
Circinus center — Constellation — Binoculars V 4.1 — Southern Spring
α1 Lib — Binoculars 5 — Tropical Spring
Kochab (β UMi) — Naked eye 2 — Arctic Spring
Zubenelgenubi (α2 Lib) — Naked eye 3 — Tropical Spring
Sat, Jun 20, 2026♊ 31
Sun, Jun 21, 2026♋ 1
♋ Sun enters Cancer · Summer solstice · Litha — 08:24:30 UTC
🌓 First Quarter — 21:55:25 UTC
β Lup — Naked eye 3 — Southern Summer

Weekly Solar-System Ephemeris

Snapshot: Week begins June 15, 2026, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♊︎ 23°56′
β +0°00′		♊︎ 22°12′
β +4°44′		♋︎ 18°24′
β +1°09′		♌︎ 1°48′
β +2°02′		♉︎ 20°03′
β −0°29′		♋︎ 26°49′
β +0°25′		♈︎ 13°18′
β −2°19′
ObservingNight☉︎Naked eye 0.5Naked eye -4.0Naked eye 1.3Naked eye -1.8Naked eye 0.8
Rise04:1203:3906:0107:0602:2206:4701:04
Set19:4820:0321:3322:2316:5321:5813:34

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♊︎ 6°58′
β −2°42′		♊︎ 2°52′
β −0°09′		♈︎ 4°17′
β −1°21′		♒︎ 5°10′
β −4°11′
Observing☉︎Binoculars 5.8Telescope 7.8TelescopeTelescope 14.5
Rise03:2602:5800:4022:38
Set18:1218:0112:4907:24

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 16:17:29 UTC

View:

ISO 2026-W25 runs from June 15 through June 21. Ceres is about 2.8° in ecliptic longitude from Aldebaran in Taurus.

Naked eye: 🌑 New Moon — 02:54:10 UTC. The dark Moon favors faint targets and extended star fields. Use Eta Cen, Alpha Centauri, α Lup, α Cir, Izar, Kochab, Zubenelgenubi, β Lup as the week’s fixed-sky framework.

Star of Cen: A Beacon in the Southern Sky — Discover the characteristics and significance of a prominent star in Centaurus, guiding observers through its celestial features.

Alpha Centauri: Three Stars Next Door — Our nearest neighboring star system combines a bright, close pair with a faint companion on an enormous orbit.

Alpha Lup: The Bright Star of the Lupus Constellation — A luminous point in the southern sky that has guided observers for centuries.

Alpha Circini: The Bright Beacon of the Cir Constellation — A detailed look into the prominent star that guides observers through the southern skies.

Izar: The Twinkling Jewel of Boötes — An exploration of the bright, captivating binary star nestled within the constellation Boötes.

Kochab: A prominent star of the Little Dipper’s Bowl — An exploration of the characteristics and significance of the bright star Kochab in Ursa Minor.

Zubenelgenubi: The Southern Claw of the Scales — A prominent star in the constellation Libra, offering a glimpse into celestial beauty and complexity.

Beta Lup: A Bright Beacon in the Southern Sky — Exploring the characteristics and significance of the star Beta Lup in the constellation Lupus.

Planets: Moon: In solar glare; magnitude -4.6; direct motion; 0.2% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Jun 15 02:54 UTC. Conjunction with Mercury in ecliptic longitude Jun 16 20:11 UTC. Conjunction with Venus in ecliptic longitude Jun 17 20:28 UTC. Conjunction with Jupiter in ecliptic longitude Jun 17 07:40 UTC. Mercury: Naked eye; magnitude 0.5; direct motion; 39.8% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jun 16 20:11 UTC. Venus: Naked eye; magnitude -4.0; direct motion; 74.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jun 17 20:28 UTC. Mars: Naked eye; magnitude 1.3; direct motion; 95.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: In solar glare; magnitude 8.9; direct motion; 99.7% illuminated. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -1.8; direct motion; 99.7% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jun 17 07:40 UTC. Saturn: Naked eye; magnitude 0.8; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. 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; direct 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 14.5; retrograde motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot.

Binoculars: Trace the charted figure of Aps, then identify α Aps at its plotted position. Trace the charted figure of Lib, then identify Alpha1 Lib at its plotted position.

Alpha Aps: The Bright Star of the Southern Constellation — An illuminating guide for stargazers exploring the southern skies and the constellation of Apus.

Alpha1 Librae: A Bright Beacon in the Libra Constellation — An overview of Alpha1 Librae, a notable star within the Libra constellation, highlighting its characteristics and significance.

Small telescope: NGC 5694: consult its dedicated finder and observing story for equipment guidance; MCG 0-38-5: consult its dedicated finder and observing story for equipment guidance

Mysteries in the constellation Hydra: A look at Caldwell's Globular Cluster C66 — Exploring the ancient, dense stellar assembly known as Caldwell 66, a fascinating globular cluster in Hydra.

Unraveling the Mystery of MCG 0-38-5 in Virgo — A closer look at a distant galaxy near the heart of the Virgo constellation, promising insights into cosmic structure.

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 4.4° above the horizon. Rises 06:01; sets 21:33 (45°N, local apparent solar time). Visual magnitude 0.5. The disk is 39.8% illuminated (crescent). It is 24.5° from the Sun, on its east side. Motion is direct at 1.010° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 7.6° away. Conjunction with Moon in ecliptic longitude Jun 16 20:11 UTC. Mercury: 7.6° from Pollux 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 12.6° above the horizon. Rises 07:06; sets 22:23 (45°N, local apparent solar time). Visual magnitude -4.0. The disk is 74.9% illuminated (gibbous). It is 37.9° from the Sun, on its east side. Motion is direct at 1.163° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 9.4° away. Conjunction with Moon in ecliptic longitude Jun 17 20:28 UTC. Venus: 9.4° from Pollux in the Pathfinder.

Moon

Moon: in solar glare at the Monday 00:00 UTC snapshot. Rises 03:39; sets 20:03 (45°N, local apparent solar time). Visual magnitude -4.6. The disk is 0.2% illuminated (waning crescent). It is 5.0° from the Sun, on its west side. Motion is direct at 15.316° per day in ecliptic longitude at the snapshot. Position reference: Elnath, 1.0° away. Solar conjunction in ecliptic longitude Jun 15 02:54 UTC. Conjunction with Mercury in ecliptic longitude Jun 16 20:11 UTC. Conjunction with Venus in ecliptic longitude Jun 17 20:28 UTC. Conjunction with Jupiter in ecliptic longitude Jun 17 07:40 UTC. Moon: 1.0° from Elnath 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 27.2° below the horizon. Rises 02:22; sets 16:53 (45°N, local apparent solar time). Visual magnitude 1.3. The disk is 95.9% illuminated (gibbous). It is 33.9° from the Sun, on its west side. Motion is direct at 0.728° per day in ecliptic longitude at the snapshot. Position reference: Menkar, 13.2° away. Mars: 13.2° from Menkar 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 8.5° above the horizon. Rises 06:47; sets 21:58 (45°N, local apparent solar time). Visual magnitude -1.8. The disk is 99.7% illuminated (nearly full). It is 32.9° from the Sun, on its east side. Motion is direct at 0.203° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 7.0° away. Conjunction with Moon in ecliptic longitude Jun 17 07:40 UTC. Jupiter: 7.0° from Pollux 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 37.0° below the horizon. Rises 01:04; sets 13:34 (45°N, local apparent solar time). Visual magnitude 0.8. The disk is 99.7% illuminated (nearly full). It is 70.6° from the Sun, on its west side. Motion is direct at 0.067° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 17.7° away. Saturn: 17.7° 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 21.4° below the horizon. Rises 02:58; sets 18:01 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 21.1° from the Sun, on its west side. Motion is direct at 0.056° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 9.0° away. Ceres is 4.8° away at the snapshot. Uranus: 9.0° 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 35.7° below the horizon. Rises 00:40; sets 12:49 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 79.7° from the Sun, on its west side. Motion is direct at 0.012° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 18.5° away. Neptune: 18.5° from Fumalsamakah in the Pathfinder.

Ceres

Ceres: in solar glare at the Monday 00:00 UTC snapshot. Rises 03:26; sets 18:12 (45°N, local apparent solar time). Visual magnitude 8.9. The disk is 99.7% illuminated (nearly full). It is 17.2° from the Sun, on its west side. Motion is direct at 0.408° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 4.2° away. Uranus is 4.8° away at the snapshot. Ceres: 4.2° from Aldebaran 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 16.3° below the horizon. Rises 22:38; sets 07:24 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 138.6° from the Sun, on its west side. Motion is retrograde at 0.016° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.8° away. Pluto: 8.8° from Dabih in the Pathfinder.

Chart

ISO2026-W25-chart.png — chart slot.