ISO 2025-W18
Week begins: Monday, April 28, 2025
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Apr 28, 2025 | ♉ 10 | |
| Tue, Apr 29, 2025 | ♉ 11 | |
| Wed, Apr 30, 2025 | ♉ 12 | |
| Thu, May 1, 2025 | ♉ 13 | |
| Fri, May 2, 2025 | ♉ 14 | C97 / NGC 3766 —  5 5.3 — Southern SpringC100 / IC 2944 · Lambda Centauri Cluster — 5 4.5 — Southern Spring |
| Sat, May 3, 2025 | ♉ 15 | |
| Sun, May 4, 2025 | ♉ 16 | 🌓 First Quarter — 13:51:46 UTC Finest NGC 43 / NGC 3877 · MCG 8-22-2 — 12 11.8 — Northern Spring |
Weekly Solar-System Ephemeris
Snapshot: Week begins April 28, 2025, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♉︎ 7°58′ β +0°00′ | ♉︎ 10°38′ β +3°35′ | ♈︎ 11°36′ β −2°51′ | ♓︎ 28°35′ β +1°36′ | ♌︎ 4°14′ β +2°03′ | ♊︎ 20°46′ β −0°15′ | ♓︎ 27°32′ β −2°00′ |
| Observing |  | ☉︎ |  0.3 | -4.7 | 0.9 | -2.0 | 1.2 |
| Rise | 04:57 | 04:45 | 04:14 | 03:24 | 10:30 | 07:14 | 03:40 |
| Set | 19:03 | 19:27 | 16:35 | 15:36 | 01:41 | 22:41 | 15:23 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♓︎ 23°42′ β −8°35′ | ♉︎ 26°09′ β −0°13′ | ♈︎ 1°00′ β −1°17′ | ♒︎ 3°48′ β −3°32′ |
| Observing | 9.3 | ☉︎ | 7.8 | 14.5 |
| Rise | 04:08 | 05:49 | 03:44 | 01:41 |
| Set | 14:49 | 20:37 | 15:43 | 10:30 |
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.
Planet Finder
Sky Notes
Kilroy: Sky Notes · generated 2026-10-23 08:36:13 UTC
ISO 2025-W18 runs from April 28 through May 4. Venus and Saturn are separated by about 1.0° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Jupiter is about 1.8° in ecliptic longitude from Elnath in Taurus.
Naked eye: 🌓 First Quarter — 13:51:46 UTC. Moderate moonlight makes timing and local sky position important for faint targets. No fixed-sky Calendar object is classified for naked-eye observing this week.
Planets: Moon: In solar glare; magnitude -4.5; direct motion; 0.2% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mars in ecliptic longitude May 04 00:12 UTC. Conjunction with Jupiter in ecliptic longitude Apr 30 16:57 UTC. Conjunction with Uranus in ecliptic longitude Apr 29 00:33 UTC. Mercury: Naked eye; magnitude 0.3; direct motion; 55.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Venus: Naked eye; magnitude -4.7; direct motion; 26.4% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Neptune in ecliptic longitude May 02 17:07 UTC. Mars: Naked eye; magnitude 0.9; direct motion; 89.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude May 04 00:12 UTC. Ceres: Telescope; magnitude 9.3; direct motion; 98.6% 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; 99.6% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Apr 30 16:57 UTC. 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: In solar glare; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Apr 29 00:33 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. Conjunction with Venus in ecliptic longitude May 02 17:07 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. Station May 04 15:26 UTC: turns retrograde.
Binoculars: No fixed-sky Calendar object is classified for binocular observing this week.
Small telescope: NGC 3766: consult its dedicated finder and observing story for equipment guidance; Lambda Centauri Cluster: consult its dedicated finder and observing story for equipment guidance; MCG 8-22-2: consult its dedicated finder and observing story for equipment guidance
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 39.5° below the horizon. Rises 04:14; sets 16:35 (45°N, local apparent solar time). Visual magnitude 0.3. The disk is 55.0% illuminated (gibbous). It is 26.5° from the Sun, on its west side. Motion is direct at 1.250° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 19.1° away. Mercury: 19.1° from Alrescha 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 43.8° below the horizon. Rises 03:24; sets 15:36 (45°N, local apparent solar time). Visual magnitude -4.7. The disk is 26.4% illuminated (crescent). It is 39.4° from the Sun, on its west side. Motion is direct at 0.490° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 12.1° away. Saturn is 3.7° away at the snapshot. Neptune is 3.8° away at the snapshot. Conjunction with Neptune in ecliptic longitude May 02 17:07 UTC. Venus: 12.1° from Fumalsamakah in the Pathfinder.
Moon
Moon: in solar glare at the Monday 00:00 UTC snapshot. Rises 04:45; sets 19:27 (45°N, local apparent solar time). Visual magnitude -4.5. The disk is 0.2% illuminated (waxing crescent). It is 4.5° from the Sun, on its east side. Motion is direct at 15.267° per day in ecliptic longitude at the snapshot. Position reference: Hamal, 6.9° away. Conjunction with Mars in ecliptic longitude May 04 00:12 UTC. Conjunction with Jupiter in ecliptic longitude Apr 30 16:57 UTC. Conjunction with Uranus in ecliptic longitude Apr 29 00:33 UTC. Moon: 6.9° 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 47.2° above the horizon. Rises 10:30; sets 01:41 (45°N, local apparent solar time). Visual magnitude 0.9. The disk is 89.9% illuminated (gibbous). It is 86.3° from the Sun, on its east side. Motion is direct at 0.449° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 11.6° away. Conjunction with Moon in ecliptic longitude May 04 00:12 UTC. Mars: 11.6° 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 15.5° above the horizon. Rises 07:14; sets 22:41 (45°N, local apparent solar time). Visual magnitude -2.0. The disk is 99.6% illuminated (nearly full). It is 42.8° from the Sun, on its east side. Motion is direct at 0.197° per day in ecliptic longitude at the snapshot. Position reference: Elnath, 6.0° away. Conjunction with Moon in ecliptic longitude Apr 30 16:57 UTC. Jupiter: 6.0° 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 47.4° below the horizon. Rises 03:40; sets 15:23 (45°N, local apparent solar time). Visual magnitude 1.2. The disk is 99.9% illuminated (nearly full). It is 40.5° from the Sun, on its west side. Motion is direct at 0.104° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.0° away. Venus is 3.7° away at the snapshot. Neptune is 3.5° away at the snapshot. Saturn: 14.0° from Fumalsamakah in the Pathfinder.
Uranus
Uranus: in solar glare at the Monday 00:00 UTC snapshot. Rises 05:49; sets 20:37 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 18.2° from the Sun, on its east side. Motion is direct at 0.056° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 14.9° away. Conjunction with Moon in ecliptic longitude Apr 29 00:33 UTC. Uranus: 14.9° 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 44.9° below the horizon. Rises 03:44; sets 15:43 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 37.0° from the Sun, on its west side. Motion is direct at 0.032° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 15.8° away. Venus is 3.8° away at the snapshot. Saturn is 3.5° away at the snapshot. Conjunction with Venus in ecliptic longitude May 02 17:07 UTC. Neptune: 15.8° 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 55.0° below the horizon. Rises 04:08; sets 14:49 (45°N, local apparent solar time). Visual magnitude 9.3. The disk is 98.6% illuminated (gibbous). It is 44.9° from the Sun, on its west side. Motion is direct at 0.349° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 15.1° away. Ceres: 15.1° 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 48.3° below the horizon. Rises 01:41; sets 10:30 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 94.1° from the Sun, on its west side. Motion is direct at 0.003° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.1° away. Station May 04 15:26 UTC: turns retrograde. Pluto: 8.1° from Dabih in the Pathfinder.
Highlights
Mercury
Naked eye; magnitude 0.3; direct motion; 55.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mercury: 19.1° from Alrescha in the Pathfinder.
Venus
Naked eye; magnitude -4.7; direct motion; 26.4% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Neptune in ecliptic longitude May 02 17:07 UTC. Venus: 12.1° from Fumalsamakah in the Pathfinder.
Moon
In solar glare; magnitude -4.5; direct motion; 0.2% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mars in ecliptic longitude May 04 00:12 UTC. Conjunction with Jupiter in ecliptic longitude Apr 30 16:57 UTC. Conjunction with Uranus in ecliptic longitude Apr 29 00:33 UTC. Moon: 6.9° from Hamal in the Pathfinder.
Mars
Naked eye; magnitude 0.9; direct motion; 89.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude May 04 00:12 UTC. Mars: 11.6° from Pollux in the Pathfinder.
Jupiter
Naked eye; magnitude -2.0; direct motion; 99.6% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Apr 30 16:57 UTC. Jupiter: 6.0° from Elnath in the Pathfinder.
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. Saturn: 14.0° from Fumalsamakah in the Pathfinder.
Uranus
In solar glare; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Apr 29 00:33 UTC. Uranus: 14.9° from Aldebaran in the Pathfinder.
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 Venus in ecliptic longitude May 02 17:07 UTC. Neptune: 15.8° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 9.3; direct motion; 98.6% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: 15.1° from Diphda in the Pathfinder.
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. Station May 04 15:26 UTC: turns retrograde. Pluto: 8.1° from Dabih in the Pathfinder.