ISO 2025-W41
Week begins: Monday, October 6, 2025
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Oct 6, 2025 | ♎ 15 | |
| Tue, Oct 7, 2025 | ♎ 16 | 🌕 Full Moon · Harvest Moon — 03:47:37 UTC |
| Wed, Oct 8, 2025 | ♎ 17 | C19 / IC 5146 · Cocoon Nebula —  10 10.0 — Northern Autumn |
| Thu, Oct 9, 2025 | ♎ 18 | |
| Fri, Oct 10, 2025 | ♎ 19 | |
| Sat, Oct 11, 2025 | ♎ 20 | Sadalmelik (α Aqr) —  3 3.0 — Tropical Autumn |
| Sun, Oct 12, 2025 | ♎ 21 | Alnair (α Gru) — 2 1.7 — Southern Autumn |
Weekly Solar-System Ephemeris
Snapshot: Week begins October 6, 2025, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♎︎ 13°00′ β +0°00′ | ♓︎ 27°05′ β +0°48′ | ♎︎ 28°57′ β −0°42′ | ♍︎ 20°14′ β +1°24′ | ♏︎ 9°17′ β −0°08′ | ♋︎ 23°03′ β +0°02′ | ♓︎ 27°23′ β −2°31′ |
| Observing |  | -12.4 | ☉︎ | -3.9 | 1.6 | -2.2 | 0.6 |
| Rise | 06:15 | 16:59 | 07:43 | 04:14 | 08:36 | 23:15 | 17:17 |
| Set | 17:45 | 05:01 | 18:15 | 17:03 | 18:43 | 14:28 | 04:56 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♈︎ 8°50′ β −15°03′ | ♊︎ 1°06′ β −0°13′ | ♈︎ 0°25′ β −1°22′ | ♒︎ 1°23′ β −3°47′ |
| Observing | 7.6 |  5.7 | 7.7 | 14.5 |
| Rise | 18:48 | 19:39 | 17:18 | 15:10 |
| Set | 05:29 | 10:38 | 05:14 | 23:50 |
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 17:24:05 UTC
ISO 2025-W41 runs from October 6 through October 12. Saturn and Neptune are separated by about 3.0° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.
Naked eye: 🌕 Full Moon · Harvest Moon — 03:47:37 UTC. Bright moonlight favors prominent stars and planets while reducing contrast on faint deep-sky objects. Use Sadalmelik, Alnair as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -12.4; direct motion; 98.1% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Oct 07 03:47 UTC. Conjunction with Ceres in ecliptic longitude Oct 06 18:54 UTC. Conjunction with Saturn in ecliptic longitude Oct 06 00:29 UTC. Conjunction with Uranus in ecliptic longitude Oct 10 06:47 UTC. Conjunction with Neptune in ecliptic longitude Oct 06 05:28 UTC. Mercury: In solar glare; magnitude -0.4; direct motion; 90.3% illuminated. Monday 00:00 UTC snapshot. Venus: Naked eye; magnitude -3.9; direct motion; 92.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 1.6; direct motion; 97.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 7.6; retrograde motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 18:54 UTC. Jupiter: Naked eye; magnitude -2.2; direct motion; 99.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 0.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 00:29 UTC. Uranus: Binoculars; magnitude 5.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 10 06:47 UTC. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 05:28 UTC. Pluto: Substantial telescope; magnitude 14.5; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot.
Binoculars: No fixed-sky Calendar object is classified for binocular observing this week.
Small telescope: Cocoon Nebula: 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 07:43; sets 18:15 (45°N, local apparent solar time). Visual magnitude -0.4. The disk is 90.3% illuminated (gibbous). It is 16.0° from the Sun, on its east side. Motion is direct at 1.518° per day in ecliptic longitude at the snapshot. Position reference: Spica, 4.9° away. Mercury: 4.9° from Spica 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 35.1° below the horizon. Rises 04:14; sets 17:03 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 92.1% illuminated (gibbous). It is 22.8° from the Sun, on its west side. Motion is direct at 1.235° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 7.3° away. Venus: 7.3° from Zavijava 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 37.2° above the horizon. Rises 16:59; sets 05:01 (45°N, local apparent solar time). Visual magnitude -12.4. The disk is 98.1% illuminated (waxing gibbous). It is 164.1° from the Sun, on its east side. Motion is direct at 14.547° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 11.6° away. Saturn is 3.3° away at the snapshot. Neptune is 4.0° away at the snapshot. Opposition in ecliptic longitude Oct 07 03:47 UTC. Conjunction with Ceres in ecliptic longitude Oct 06 18:54 UTC. Conjunction with Saturn in ecliptic longitude Oct 06 00:29 UTC. Conjunction with Uranus in ecliptic longitude Oct 10 06:47 UTC. Conjunction with Neptune in ecliptic longitude Oct 06 05:28 UTC. Moon: 11.6° from Fumalsamakah 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 24.4° below the horizon. Rises 08:36; sets 18:43 (45°N, local apparent solar time). Visual magnitude 1.6. The disk is 97.9% illuminated (gibbous). It is 26.3° from the Sun, on its east side. Motion is direct at 0.686° per day in ecliptic longitude at the snapshot. Position reference: Zubenelgenubi, 6.2° away. Mars: 6.2° from Zubenelgenubi 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 17.3° below the horizon. Rises 23:15; sets 14:28 (45°N, local apparent solar time). Visual magnitude -2.2. The disk is 99.1% illuminated (nearly full). It is 80.0° from the Sun, on its west side. Motion is direct at 0.110° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 6.7° away. Jupiter: 6.7° 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 33.9° above the horizon. Rises 17:17; sets 04:56 (45°N, local apparent solar time). Visual magnitude 0.6. The disk is 100.0% illuminated (nearly full). It is 164.2° from the Sun, on its east side. Motion is retrograde at 0.073° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.3° away. Moon is 3.3° away at the snapshot. Neptune is 3.2° away at the snapshot. Conjunction with Moon in ecliptic longitude Oct 06 00:29 UTC. Saturn: 14.3° 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 12.7° above the horizon. Rises 19:39; sets 10:38 (45°N, local apparent solar time). Visual magnitude 5.7. The disk is 100.0% illuminated (nearly full). It is 131.9° from the Sun, on its west side. Motion is retrograde at 0.024° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 10.5° away. Conjunction with Moon in ecliptic longitude Oct 10 06:47 UTC. Uranus: 10.5° 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 34.8° above the horizon. Rises 17:18; sets 05:14 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 167.3° from the Sun, on its east side. Motion is retrograde at 0.027° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 15.5° away. Moon is 4.0° away at the snapshot. Saturn is 3.2° away at the snapshot. Conjunction with Moon in ecliptic longitude Oct 06 05:28 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 20.2° above the horizon. Rises 18:48; sets 05:29 (45°N, local apparent solar time). Visual magnitude 7.6. The disk is 99.8% illuminated (nearly full). It is 164.4° from the Sun, on its east side. Motion is retrograde at 0.225° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 8.0° away. Conjunction with Moon in ecliptic longitude Oct 06 18:54 UTC. Ceres: 8.0° 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 18.4° above the horizon. Rises 15:10; sets 23:50 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 108.3° from the Sun, on its east side. Motion is retrograde at 0.004° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.9° away. Pluto: 8.9° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -0.4; direct motion; 90.3% illuminated. Monday 00:00 UTC snapshot. Mercury: 4.9° from Spica in the Pathfinder.
Venus
Naked eye; magnitude -3.9; direct motion; 92.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Venus: 7.3° from Zavijava in the Pathfinder.
Moon
Naked eye; magnitude -12.4; direct motion; 98.1% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Oct 07 03:47 UTC. Conjunction with Ceres in ecliptic longitude Oct 06 18:54 UTC. Conjunction with Saturn in ecliptic longitude Oct 06 00:29 UTC. Conjunction with Uranus in ecliptic longitude Oct 10 06:47 UTC. Conjunction with Neptune in ecliptic longitude Oct 06 05:28 UTC. Moon: 11.6° from Fumalsamakah in the Pathfinder.
Mars
Naked eye; magnitude 1.6; direct motion; 97.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: 6.2° from Zubenelgenubi in the Pathfinder.
Jupiter
Naked eye; magnitude -2.2; direct motion; 99.1% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: 6.7° from Pollux in the Pathfinder.
Saturn
Naked eye; magnitude 0.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 00:29 UTC. Saturn: 14.3° from Fumalsamakah in the Pathfinder.
Uranus
Binoculars; magnitude 5.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 10 06:47 UTC. Uranus: 10.5° from Aldebaran in the Pathfinder.
Neptune
Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 05:28 UTC. Neptune: 15.5° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 7.6; retrograde motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 06 18:54 UTC. Ceres: 8.0° from Diphda in the Pathfinder.
Pluto
Substantial telescope; magnitude 14.5; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: 8.9° from Dabih in the Pathfinder.