Star Almanack
Alexander Ferrari Miller

ISO 2025-W22

Week begins: Monday, May 26, 2025

Notation:

Calendar

DateZodiac dayEvents
Mon, May 26, 2025♊ 7
C29 / NGC 5005 / Finest NGC 66 / NGC 5005 · MCG 6-29-52 — Telescope 10 — Northern Spring
β Com — Binoculars 4 — Northern Spring — in the Milky Way
M53 — Telescope 8 — Tropical Spring
Finest NGC 67 / NGC 5033 · MCG 6-29-62 — Telescope 11 — Northern Spring
Tue, May 27, 2025♊ 8
🌑 New Moon — 03:02:21 UTC
M63 — Telescope 9 — Northern Spring
Wed, May 28, 2025♊ 9
Thu, May 29, 2025♊ 10
Mizar (ζ UMa) — Naked eye 2 — Northern Spring
Spica (α Vir) — Naked eye 1 — Tropical Spring
C77 / NGC 5128 · Centaurus A — Telescope 7 — Southern Spring
Fri, May 30, 2025♊ 11
C80 / NGC 5139 · Omega Centauri — Telescope 4 — Southern Spring
M51 — Telescope 8 — Northern Spring
Sat, May 31, 2025♊ 12
Sun, Jun 1, 2025♊ 13
M83 — Telescope 8 — Southern Spring
C45 / NGC 5248 — Telescope 10 — Tropical Spring

Weekly Solar-System Ephemeris

Snapshot: Week begins May 26, 2025, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♊︎ 5°01′
β +0°00′		♉︎ 19°03′
β +4°06′		♉︎ 29°55′
β −0°09′		♈︎ 19°18′
β −1°47′		♌︎ 17°54′
β +1°33′		♊︎ 26°40′
β −0°11′		♈︎ 0°04′
β −2°05′
ObservingNight☉︎☉︎Naked eye -4.5Naked eye 1.2Naked eye -1.9Naked eye 1.1
Rise04:2403:1404:1002:3509:5605:4801:56
Set19:3618:2519:0715:2800:2621:1913:47

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♈︎ 2°53′
β −9°29′		♉︎ 27°46′
β −0°13′		♈︎ 1°45′
β −1°18′		♒︎ 3°43′
β −3°37′
ObservingTelescope 9.3☉︎Telescope 7.8TelescopeTelescope 14.5
Rise02:4104:0401:5623:52
Set13:4618:5613:5708:39

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 10:04:20 UTC

View:

ISO 2025-W22 runs from May 26 through June 1. Ceres and Neptune are separated by about 1.1° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Saturn and Neptune are separated by about 1.7° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.

Naked eye: 🌑 New Moon — 03:02:21 UTC. The dark Moon favors faint targets and extended star fields. Use Mizar, Spica as the week’s fixed-sky framework.

Mizar: A Bright Cornerstone of the Big Dipper — An enduring stellar landmark, Mizar's significance stretches across astronomy and cultural history.

Spica: The Bright Star at the Heart of the Spring Sky — An enduring beacon in the Virgo constellation, Spica's brilliance captivates stargazers and serves as a navigational marker for centuries.

Planets: Moon: In solar glare; magnitude -5.7; direct motion; 2.1% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude May 27 03:02 UTC. Conjunction with Mercury in ecliptic longitude May 26 20:04 UTC. Conjunction with Mars in ecliptic longitude Jun 01 10:40 UTC. Conjunction with Jupiter in ecliptic longitude May 28 13:00 UTC. Conjunction with Uranus in ecliptic longitude May 26 13:51 UTC. Mercury: In solar glare; magnitude -1.8; direct motion; 97.9% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude May 30 04:12 UTC. Conjunction with Moon in ecliptic longitude May 26 20:04 UTC. Venus: Naked eye; magnitude -4.5; direct motion; 46.1% 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; 90.6% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jun 01 10:40 UTC. Ceres: Telescope; magnitude 9.3; direct motion; 97.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -1.9; direct motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude May 28 13:00 UTC. Saturn: Naked eye; magnitude 1.1; direct motion; 99.8% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Uranus: In solar glare; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude May 26 13:51 UTC. 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 Coma Berenices’s charted figure in the finder, then identify β Com at its charted position.

Beta Com: A Shining Beacon in the constellation Coma Bsc. — An overview of Beta Com, its celestial significance, and its role in our understanding of the night sky.

Small telescope: MCG 6-29-52: consult its dedicated finder and observing story for equipment guidance; M53: consult its dedicated finder and observing story for equipment guidance; MCG 6-29-62: consult its dedicated finder and observing story for equipment guidance; Sunflower Galaxy: consult its dedicated finder and observing story for equipment guidance; Centaurus A: consult its dedicated finder and observing story for equipment guidance; Omega Centauri: consult its dedicated finder and observing story for equipment guidance; Whirlpool Galaxy: consult its dedicated finder and observing story for equipment guidance; Southern Pinwheel: consult its dedicated finder and observing story for equipment guidance; NGC 5248: consult its dedicated finder and observing story for equipment guidance

A Glimpse into a Distant Galaxy in Canes Venatici — Discover the celestial beauty of a galaxy along the faint contours of the constellation Canes Venatici, a testament to the universe's vastness and diversity.

M53: The Cometary Wonder of Hercules — An ancient globular cluster offering astronomers a glimpse into the universe's early formations.

Exploring MCG 6-29-62: A Galaxy in Canes Venatici — A detailed look at a distant galaxy located in the constellation Canes Venatici, combining scientific knowledge and observational insights.

The Sunflower Galaxy: A Spiral Wonder in Canes Venatici — An overview of M63, its characteristics, and its significance in our understanding of spiral galaxies.

Centaurus A: A Peculiar Galaxy in the Constellation Centaurus — An overview of one of the most intriguing galaxies in our universe, known for its distinctive structure and active core.

Omega Centauri: The Bright Jewel of the Centaurus Constellation — A magnificent globular cluster that dazzles both amateur and professional astronomers with its striking stellar population.

The Whirlpool Galaxy: A Cosmic Whirlpool in Canes Venatici — An enduring emblem of galaxy interactions, the Whirlpool Galaxy offers astronomers a mesmerizing glimpse into celestial dynamics.

M83: The Southern Pinwheel Galaxy—A Cosmic Spiral in Hydra — An enduring wonder in the southern skies, M83 invites explorers into its majestic spiral arms, revealing the dynamic beauty of a barred galaxy.

Exploring Caldwell C45: A Galaxy Hidden in Boo — Discover the intriguing characteristics of Caldwell C45, a potential galaxy in the constellation Boo, and its significance in astronomical observations.

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 04:10; sets 19:07 (45°N, local apparent solar time). Visual magnitude -1.8. The disk is 97.9% illuminated (gibbous). It is 5.1° from the Sun, on its west side. Motion is direct at 2.152° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 11.5° away. Uranus is 2.1° away at the snapshot. Solar conjunction in ecliptic longitude May 30 04:12 UTC. Conjunction with Moon in ecliptic longitude May 26 20:04 UTC. Mercury: 11.5° from Aldebaran 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 39.2° below the horizon. Rises 02:35; sets 15:28 (45°N, local apparent solar time). Visual magnitude -4.5. The disk is 46.1% illuminated (crescent). It is 45.7° from the Sun, on its west side. Motion is direct at 0.915° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 12.7° away. Venus: 12.7° from Alrescha in the Pathfinder.

Moon

Moon: in solar glare at the Monday 00:00 UTC snapshot. Rises 03:14; sets 18:25 (45°N, local apparent solar time). Visual magnitude -5.7. The disk is 2.1% illuminated (waning crescent). It is 16.5° from the Sun, on its west side. Motion is direct at 15.133° per day in ecliptic longitude at the snapshot. Position reference: Hamal, 12.4° away. Solar conjunction in ecliptic longitude May 27 03:02 UTC. Conjunction with Mercury in ecliptic longitude May 26 20:04 UTC. Conjunction with Mars in ecliptic longitude Jun 01 10:40 UTC. Conjunction with Jupiter in ecliptic longitude May 28 13:00 UTC. Conjunction with Uranus in ecliptic longitude May 26 13:51 UTC. Moon: 12.4° from Hamal 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 35.0° above the horizon. Rises 09:56; sets 00:26 (45°N, local apparent solar time). Visual magnitude 1.2. The disk is 90.6% illuminated (gibbous). It is 72.9° from the Sun, on its east side. Motion is direct at 0.521° per day in ecliptic longitude at the snapshot. Position reference: Acubens, 7.7° away. Conjunction with Moon in ecliptic longitude Jun 01 10:40 UTC. Mars: 7.7° from Acubens 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 2.2° above the horizon. Rises 05:48; sets 21:19 (45°N, local apparent solar time). Visual magnitude -1.9. The disk is 99.9% illuminated (nearly full). It is 21.7° from the Sun, on its east side. Motion is direct at 0.221° per day in ecliptic longitude at the snapshot. Position reference: Elnath, 6.7° away. Conjunction with Moon in ecliptic longitude May 28 13:00 UTC. Jupiter: 6.7° from Elnath 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 44.5° below the horizon. Rises 01:56; sets 13:47 (45°N, local apparent solar time). Visual magnitude 1.1. The disk is 99.8% illuminated (nearly full). It is 65.0° from the Sun, on its west side. Motion is direct at 0.074° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 15.7° away. Neptune is 1.9° away at the snapshot. Saturn: 15.7° from Fumalsamakah in the Pathfinder.

Uranus

Uranus: in solar glare at the Monday 00:00 UTC snapshot. Rises 04:04; sets 18:56 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 7.3° from the Sun, on its west side. Motion is direct at 0.058° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 13.4° away. Mercury is 2.1° away at the snapshot. Conjunction with Moon in ecliptic longitude May 26 13:51 UTC. Uranus: 13.4° 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 43.5° below the horizon. Rises 01:56; sets 13:57 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 63.3° from the Sun, on its west side. Motion is direct at 0.021° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.4° away. Saturn is 1.9° away at the snapshot. Neptune: 16.4° 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 51.4° below the horizon. Rises 02:41; sets 13:46 (45°N, local apparent solar time). Visual magnitude 9.3. The disk is 97.7% illuminated (gibbous). It is 62.5° from the Sun, on its west side. Motion is direct at 0.303° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 11.3° away. Ceres: 11.3° 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 29.1° below the horizon. Rises 23:52; sets 08:39 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 121.2° from the Sun, on its west side. Motion is retrograde at 0.009° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.2° away. Pluto: 8.2° from Dabih in the Pathfinder.