ISO 2025-W23
Week begins: Monday, June 2, 2025
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Jun 2, 2025 | ♊ 14 | ε Cen —  Var 2 2.3 2.29–2.31 — Southern SpringM3 —  6 6.2 — Northern Spring |
| Tue, Jun 3, 2025 | ♊ 15 | 🌓 First Quarter — 03:40:59 UTC C84 / NGC 5286 — 8 7.6 — Southern Spring |
| Wed, Jun 4, 2025 | ♊ 16 | Alkaid (η UMa) — 2 1.9 — Northern Spring |
| Thu, Jun 5, 2025 | ♊ 17 | |
| Fri, Jun 6, 2025 | ♊ 18 | |
| Sat, Jun 7, 2025 | ♊ 19 | M101 — 8 7.9 — Northern Spring |
| Sun, Jun 8, 2025 | ♊ 20 | Hadar (β Cen) — Var 1 0.6 0.6–0.7 — Southern SpringThuban (α Dra) / Thuban (α Draconis) —  4 3.7 — Northern SpringFinest NGC 86 / NGC 5466 — 9 9.2 — Northern SpringMenkent (θ Cen) — 2 2.1 — Southern Spring |
Weekly Solar-System Ephemeris
Snapshot: Week begins June 2, 2025, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♊︎ 11°44′ β −0°00′ | ♌︎ 28°25′ β +2°11′ | ♊︎ 15°14′ β +1°01′ | ♈︎ 25°53′ β −2°12′ | ♌︎ 21°36′ β +1°26′ | ♊︎ 28°13′ β −0°11′ | ♈︎ 0°33′ β −2°07′ |
| Observing |  | -9.5 | ☉︎ | -4.4 | 1.3 | ☉︎ | 1.1 |
| Rise | 04:18 | 10:23 | 04:27 | 02:24 | 09:48 | 05:26 | 01:29 |
| Set | 19:42 | 00:27 | 20:02 | 15:33 | 00:06 | 20:57 | 13:21 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♈︎ 4°57′ β −9°45′ | ♉︎ 28°10′ β −0°13′ | ♈︎ 1°53′ β −1°18′ | ♒︎ 3°38′ β −3°38′ |
| Observing | 9.2 | ☉︎ | 7.8 | 14.5 |
| Rise | 02:19 | 03:37 | 01:27 | 23:23 |
| Set | 13:28 | 18:29 | 13:29 | 08:10 |
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 10:24:38 UTC
ISO 2025-W23 runs from June 2 through June 8. Saturn and Neptune are separated by about 1.3° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Ceres and Neptune are separated by about 3.1° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.
Naked eye: 🌓 First Quarter — 03:40:59 UTC. Moderate moonlight makes timing and local sky position important for faint targets. Use Epsilon Cen, Alkaid, Hadar, Menkent as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -9.5; direct motion; 38.6% illuminated. Monday 00:00 UTC snapshot. Mercury: In solar glare; magnitude -2.0; direct motion; 98.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Jupiter in ecliptic longitude Jun 08 20:12 UTC. Venus: Naked eye; magnitude -4.4; direct motion; 50.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 1.3; direct motion; 90.9% illuminated. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 9.2; direct motion; 97.5% 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; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Jun 08 20:12 UTC. Saturn: Naked eye; magnitude 1.1; direct motion; 99.7% 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. 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 Draco’s charted figure in the finder, then identify Thuban at its charted position.
Small telescope: M3: consult its dedicated finder and observing story for equipment guidance; NGC 5286: consult its dedicated finder and observing story for equipment guidance; Pinwheel Galaxy: consult its dedicated finder and observing story for equipment guidance; NGC 5466: 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: in solar glare at the Monday 00:00 UTC snapshot. Rises 04:27; sets 20:02 (45°N, local apparent solar time). Visual magnitude -2.0. The disk is 98.9% illuminated (gibbous). It is 3.6° from the Sun, on its east side. Motion is direct at 2.190° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 8.2° away. Conjunction with Jupiter in ecliptic longitude Jun 08 20:12 UTC. Mercury: 8.2° 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 37.2° below the horizon. Rises 02:24; sets 15:33 (45°N, local apparent solar time). Visual magnitude -4.4. The disk is 50.1% illuminated (half-lit). It is 45.9° from the Sun, on its west side. Motion is direct at 0.966° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 7.9° away. Venus: 7.9° from Alrescha 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 35.3° above the horizon. Rises 10:23; sets 00:27 (45°N, local apparent solar time). Visual magnitude -9.5. The disk is 38.6% illuminated (waxing crescent). It is 76.7° from the Sun, on its east side. Motion is direct at 12.712° per day in ecliptic longitude at the snapshot. Position reference: Regulus, 2.5° away. Moon: 2.5° from Regulus 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 31.7° above the horizon. Rises 09:48; sets 00:06 (45°N, local apparent solar time). Visual magnitude 1.3. The disk is 90.9% illuminated (gibbous). It is 69.9° from the Sun, on its east side. Motion is direct at 0.535° per day in ecliptic longitude at the snapshot. Position reference: Regulus, 8.6° away. Mars: 8.6° from Regulus in the Pathfinder.
Jupiter
Jupiter: in solar glare at the Monday 00:00 UTC snapshot. Rises 05:26; sets 20:57 (45°N, local apparent solar time). Visual magnitude -1.9. The disk is 99.9% illuminated (nearly full). It is 16.5° from the Sun, on its east side. Motion is direct at 0.224° per day in ecliptic longitude at the snapshot. Position reference: Elnath, 7.7° away. Conjunction with Mercury in ecliptic longitude Jun 08 20:12 UTC. Jupiter: 7.7° 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 42.0° below the horizon. Rises 01:29; sets 13:21 (45°N, local apparent solar time). Visual magnitude 1.1. The disk is 99.7% illuminated (nearly full). It is 71.2° from the Sun, on its west side. Motion is direct at 0.065° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.1° away. Neptune is 1.6° away at the snapshot. Saturn: 16.1° from Fumalsamakah in the Pathfinder.
Uranus
Uranus: in solar glare at the Monday 00:00 UTC snapshot. Rises 03:37; sets 18:29 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 13.6° from the Sun, on its west side. Motion is direct at 0.057° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 13.1° away. Uranus: 13.1° 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 41.2° below the horizon. Rises 01:27; sets 13:29 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 69.9° from the Sun, on its west side. Motion is direct at 0.017° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 16.5° away. Saturn is 1.6° away at the snapshot. Neptune: 16.5° 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 49.4° below the horizon. Rises 02:19; sets 13:28 (45°N, local apparent solar time). Visual magnitude 9.2. The disk is 97.5% illuminated (gibbous). It is 67.1° from the Sun, on its west side. Motion is direct at 0.288° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 11.2° away. Ceres: 11.2° 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 24.0° below the horizon. Rises 23:23; sets 08:10 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 128.0° from the Sun, on its west side. Motion is retrograde at 0.012° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.3° away. Pluto: 8.3° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -2.0; direct motion; 98.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Jupiter in ecliptic longitude Jun 08 20:12 UTC. Mercury: 8.2° from Aldebaran in the Pathfinder.
Venus
Naked eye; magnitude -4.4; direct motion; 50.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Venus: 7.9° from Alrescha in the Pathfinder.
Moon
Naked eye; magnitude -9.5; direct motion; 38.6% illuminated. Monday 00:00 UTC snapshot. Moon: 2.5° from Regulus in the Pathfinder.
Mars
Naked eye; magnitude 1.3; direct motion; 90.9% illuminated. Monday 00:00 UTC snapshot. Mars: 8.6° from Regulus in the Pathfinder.
Jupiter
In solar glare; magnitude -1.9; direct motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Jun 08 20:12 UTC. Jupiter: 7.7° from Elnath in the Pathfinder.
Saturn
Naked eye; magnitude 1.1; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Saturn: 16.1° from Fumalsamakah in the Pathfinder.
Uranus
In solar glare; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Uranus: 13.1° 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. Neptune: 16.5° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 9.2; direct motion; 97.5% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: 11.2° from Diphda in the Pathfinder.
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. Pluto: 8.3° from Dabih in the Pathfinder.