Star Almanack
Alexander Ferrari Miller

ISO 2025-W16

Week begins: Monday, April 14, 2025

Notation:

Calendar

DateZodiac dayEvents
Mon, Apr 14, 2025♈ 26
β Sex — Binoculars 5 — Tropical Spring
Tue, Apr 15, 2025♈ 27
Wed, Apr 16, 2025♈ 28
Thu, Apr 17, 2025♈ 29
Fri, Apr 18, 2025♈ 30
C102 / IC 2602 · Theta Carinae Cluster — Telescope 2 — Southern Spring
Finest NGC 52 / NGC 3344 · MCG 4-25-46 — Telescope 11 — Northern Spring
C92 / NGC 3372 · Carina Nebula — Telescope 6 — Southern Spring
M95 — Telescope 10 — Tropical Spring
Eta Carinae (η Carinae) — Naked eye — Southern Spring
Sat, Apr 19, 2025♉ 1
♉ Sun enters Taurus — 19:56:01 UTC
M96 — Telescope 9 — Tropical Spring
M105 — Telescope 9 — Tropical Spring
Finest NGC 55 / NGC 3384 · MCG 2-28-12 — Telescope 11 — Tropical Spring
Sun, Apr 20, 2025♉ 2
Finest NGC 53 / NGC 3432 · Arp 206 — Telescope 12 — Northern Spring

Weekly Solar-System Ephemeris

Snapshot: Week begins April 14, 2025, 00:00 UTC.

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

Notation:
Body☉︎☽︎☿︎♀︎♂︎♃︎♄︎
Ecliptic♈︎ 24°18′
β −0°00′		♏︎ 4°59′
β −3°12′		♓︎ 28°38′
β −1°28′		♓︎ 24°39′
β +4°26′		♋︎ 28°19′
β +2°21′		♊︎ 18°09′
β −0°17′		♓︎ 26°01′
β −1°58′
ObservingNightNaked eye -12.3Naked eye 0.8Naked eye -4.7Naked eye 0.7Naked eye -2.0Naked eye 1.2
Rise05:1719:4004:3203:5310:5007:5604:29
Set18:4305:3316:2216:1402:1723:2116:08

Extended targets:

Body⚳︎♅︎♆︎♇︎
Ecliptic♓︎ 18°43′
β −8°14′		♉︎ 25°24′
β −0°13′		♈︎ 0°32′
β −1°16′		♒︎ 3°43′
β −3°29′
ObservingTelescope 9.3Binoculars 5.8Telescope 7.8TelescopeTelescope 14.5
Rise04:4806:3904:3502:33
Set15:1521:2616:3311:22

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 07:52:40 UTC

View:

ISO 2025-W16 runs from April 14 through April 20. Venus and Saturn are separated by about 1.4° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Mercury and Neptune are separated by about 1.9° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.

Naked eye: No principal lunar phase is listed this week. Check the Moon's position each night and favor darker hours for low-contrast targets. No fixed-sky Calendar object is classified for naked-eye observing this week.

Planets: Moon: Naked eye; magnitude -12.3; direct motion; 99.1% illuminated. Monday 00:00 UTC snapshot. Mercury: Naked eye; magnitude 0.8; direct motion; 32.4% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Neptune in ecliptic longitude Apr 17 04:11 UTC. Venus: Naked eye; magnitude -4.7; direct motion; 13.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 0.7; direct motion; 90.0% illuminated. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 9.3; direct motion; 99.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -2.0; direct motion; 99.4% illuminated. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 1.2; direct motion; 99.9% 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. 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. Conjunction with Mercury in ecliptic longitude Apr 17 04:11 UTC. Pluto: Substantial telescope; magnitude 14.5; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot.

Binoculars: Trace Sextans’s charted figure in the finder, then identify β Sex at its charted position.

Beta Sextantis: A Beacon in the Sextans constellation — An overview of the star Beta Sextantis, highlighting its characteristics and significance in astronomy.

Small telescope: Theta Carinae Cluster: consult its dedicated finder and observing story for equipment guidance; MCG 4-25-46: consult its dedicated finder and observing story for equipment guidance; Carina Nebula: consult its dedicated finder and observing story for equipment guidance; M95: consult its dedicated finder and observing story for equipment guidance; M96: consult its dedicated finder and observing story for equipment guidance; M105: consult its dedicated finder and observing story for equipment guidance; MCG 2-28-12: consult its dedicated finder and observing story for equipment guidance; Arp 206: consult its dedicated finder and observing story for equipment guidance

Theta Carinae Cluster: A Stellar Open Cluster in the Constellation Carina — Discover the characteristics and significance of this intriguing open cluster located in the southern sky.

Unveiling the Galaxy Candidate MCG 4-25-46 in Leo Minor — A respected celestial object, offering insights into the universe's vast tapestry.

The Carina Nebula: A Cosmic Icon of Star Birth — An in-depth look at the majestic emission nebula nestled within the constellation Carina.

M95: A Spiral Galaxy in the Heart of Leo — Discover the intriguing features of this prominent galaxy situated in the constellation Leo.

M96: A Spiral Galaxy in Leo’s Embrace — Discovering a cosmic marvel in the constellation Leo, M96 stands as a luminous testament to the grandeur of the universe.

M105: A Elliptical Galaxy in Leo’s Elegant Realm — Unveiling the characteristics and significance of Messier 105, a prominent elliptical galaxy in the constellation Leo.

Galactic Enigma in Leo: Exploring MCG 2-28-12 — A detailed look at a galaxy within the constellation Leo, highlighting its significance and characteristics.

Exploring Arp 206: A Peculiar Galaxy in Leo Minor — A detailed overview of Arp 206, its position, and significance in astronomical studies.

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 42.9° below the horizon. Rises 04:32; sets 16:22 (45°N, local apparent solar time). Visual magnitude 0.8. The disk is 32.4% illuminated (crescent). It is 25.7° from the Sun, on its west side. Motion is direct at 0.528° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.3° away. Saturn is 2.7° away at the snapshot. Neptune is 1.9° away at the snapshot. Conjunction with Neptune in ecliptic longitude Apr 17 04:11 UTC. Mercury: 14.3° from Fumalsamakah 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 41.1° below the horizon. Rises 03:53; sets 16:14 (45°N, local apparent solar time). Visual magnitude -4.7. The disk is 13.9% illuminated (crescent). It is 30.0° from the Sun, on its west side. Motion is direct at 0.038° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 7.3° away. Venus: 7.3° from Fumalsamakah 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 11.7° above the horizon. Rises 19:40; sets 05:33 (45°N, local apparent solar time). Visual magnitude -12.3. The disk is 99.1% illuminated (waning nearly full). It is 168.9° from the Sun, on its west side. Motion is direct at 11.826° per day in ecliptic longitude at the snapshot. Position reference: Spica, 10.8° away. Moon: 10.8° from Spica 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 52.9° above the horizon. Rises 10:50; sets 02:17 (45°N, local apparent solar time). Visual magnitude 0.7. The disk is 90.0% illuminated (gibbous). It is 94.0° from the Sun, on its east side. Motion is direct at 0.394° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 6.4° away. Mars: 6.4° from Pollux 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 22.4° above the horizon. Rises 07:56; sets 23:21 (45°N, local apparent solar time). Visual magnitude -2.0. The disk is 99.4% illuminated (nearly full). It is 53.8° from the Sun, on its east side. Motion is direct at 0.178° per day in ecliptic longitude at the snapshot. Position reference: Elnath, 7.4° away. Jupiter: 7.4° 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 45.1° below the horizon. Rises 04:29; sets 16:08 (45°N, local apparent solar time). Visual magnitude 1.2. The disk is 99.9% illuminated (nearly full). It is 28.3° from the Sun, on its west side. Motion is direct at 0.114° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 13.1° away. Mercury is 2.7° away at the snapshot. Neptune is 4.6° away at the snapshot. Saturn: 13.1° 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 3.5° above the horizon. Rises 06:39; sets 21:26 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 31.1° from the Sun, on its east side. Motion is direct at 0.052° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 15.6° away. Uranus: 15.6° 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 41.4° below the horizon. Rises 04:35; sets 16:33 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 23.8° from the Sun, on its west side. Motion is direct at 0.035° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 15.5° away. Mercury is 1.9° away at the snapshot. Saturn is 4.6° away at the snapshot. Conjunction with Mercury in ecliptic longitude Apr 17 04:11 UTC. Neptune: 15.5° 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 54.6° below the horizon. Rises 04:48; sets 15:15 (45°N, local apparent solar time). Visual magnitude 9.3. The disk is 99.0% illuminated (nearly full). It is 36.4° from the Sun, on its west side. Motion is direct at 0.364° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 17.3° away. Ceres: 17.3° from Fumalsamakah 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 56.6° below the horizon. Rises 02:33; sets 11:22 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 80.6° from the Sun, on its west side. Motion is direct at 0.010° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.1° away. Pluto: 8.1° from Dabih in the Pathfinder.