ISO 2027-W42
Week begins: Monday, October 18, 2027
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Oct 18, 2027 | ♎ 26 | Delta Cephei (δ Cephei) —  — Northern AutumnC63 / NGC 7293 · Helix Nebula / Finest NGC 2 / NGC 7293 · Helix —  7 6.5 — Tropical Autumnα Lac —  4 3.8 — Northern Autumn — in the Milky Wayβ PsA — 4 4.3 — Southern Autumn |
| Tue, Oct 19, 2027 | ♎ 27 | |
| Wed, Oct 20, 2027 | ♎ 28 | Finest NGC 3 / NGC 7331 · Deer Lick Group / C30 / NGC 7331 — 10 10.2 — Northern Autumn |
| Thu, Oct 21, 2027 | ♎ 29 | Tiaki (β Gru) — Var 2 2.1 2.0–2.3 — Southern Autumn |
| Fri, Oct 22, 2027 | ♎ 30 | 🌗 Last Quarter — 17:29:10 UTC β Oct — 4 4.1 — Antarctic Autumn |
| Sat, Oct 23, 2027 | ♏ 1 | ♏ Sun enters Scorpio — 15:32:52 UTC |
| Sun, Oct 24, 2027 | ♏ 2 |
Weekly Solar-System Ephemeris
Snapshot: Week begins October 18, 2027, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♎︎ 24°23′ β +0°00′ | ♉︎ 23°57′ β +4°50′ | ♎︎ 28°03′ β −1°52′ | ♏︎ 12°13′ β +0°16′ | ♐︎ 1°27′ β −0°45′ | ♍︎ 17°41′ β +1°00′ | ♈︎ 24°25′ β −2°47′ |
| Observing |  | -12.0 | ☉︎ | ☉︎ | 1.4 | -1.8 | 0.1 |
| Rise | 06:33 | 18:04 | 06:58 | 08:08 | 09:53 | 03:19 | 17:34 |
| Set | 17:27 | 09:37 | 17:24 | 18:10 | 18:59 | 16:13 | 06:35 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♎︎ 5°37′ β +7°43′ | ♊︎ 9°31′ β −0°06′ | ♈︎ 4°43′ β −1°28′ | ♒︎ 4°45′ β −4°47′ |
| Observing | 8.7 | 5.6 | 7.7 | 14.6 |
| Rise | 04:39 | 19:23 | 16:45 | 14:44 |
| Set | 17:26 | 10:39 | 04:54 | 23:22 |
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.
Planet Finder
Sky Notes
Kilroy: Sky Notes · generated 2026-10-22 21:56:11 UTC
ISO 2027-W42 runs from October 18 through October 24. Uranus is about 0.3° in ecliptic longitude from Aldebaran in Taurus. Mars is about 1.1° in ecliptic longitude from Dschubba in Scorpius.
Naked eye: 🌗 Last Quarter — 17:29:10 UTC. Moderate moonlight makes timing and local sky position important for faint targets. Use Tiaki as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -12.0; direct motion; 93.4% illuminated. Monday 00:00 UTC snapshot. Conjunction with Uranus in ecliptic longitude Oct 19 03:33 UTC. Mercury: In solar glare; magnitude 5.0; retrograde motion; 1.1% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Oct 19 15:30 UTC. Venus: In solar glare; magnitude -3.9; direct motion; 95.4% illuminated. Monday 00:00 UTC snapshot. Mars: Naked eye; magnitude 1.4; direct motion; 95.6% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.7; direct motion; 99.5% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -1.8; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 0.1; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Oct 18 00:35 UTC. Uranus: Binoculars; magnitude 5.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 19 03:33 UTC. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: Substantial telescope; magnitude 14.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Station Oct 18 03:50 UTC: turns direct.
Binoculars: Trace Lacerta’s charted figure in the finder, then identify α Lac at its charted position. Trace Piscis Austrinus’s closed figure in the finder, then identify β PsA at its charted position. Trace Octans’s closed figure in the finder, then identify β Oct at its charted position.
Small telescope: Helix Nebula: consult its dedicated finder and observing story for equipment guidance; Deer Lick Group: 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 06:58; sets 17:24 (45°N, local apparent solar time). Visual magnitude 5.0. The disk is 1.1% illuminated (crescent). It is 4.1° from the Sun, on its east side. Motion is retrograde at 1.210° per day in ecliptic longitude at the snapshot. Position reference: Spica, 3.8° away. Solar conjunction in ecliptic longitude Oct 19 15:30 UTC. Mercury: 3.8° from Spica in the Pathfinder.
Venus
Venus: in solar glare at the Monday 00:00 UTC snapshot. Rises 08:08; sets 18:10 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 95.4% illuminated (gibbous). It is 17.8° from the Sun, on its east side. Motion is direct at 1.242° per day in ecliptic longitude at the snapshot. Position reference: Zubenelgenubi, 3.3° away. Venus: 3.3° from Zubenelgenubi 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 28.3° above the horizon. Rises 18:04; sets 09:37 (45°N, local apparent solar time). Visual magnitude -12.0. The disk is 93.4% illuminated (waning gibbous). It is 150.1° from the Sun, on its west side. Motion is direct at 13.434° per day in ecliptic longitude at the snapshot. Position reference: Hamal, 16.6° away. Conjunction with Uranus in ecliptic longitude Oct 19 03:33 UTC. Moon: 16.6° 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 20.6° below the horizon. Rises 09:53; sets 18:59 (45°N, local apparent solar time). Visual magnitude 1.4. The disk is 95.6% illuminated (gibbous). It is 37.1° from the Sun, on its east side. Motion is direct at 0.714° per day in ecliptic longitude at the snapshot. Position reference: Dschubba, 2.0° away. Mars: 2.0° from Dschubba 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 38.0° below the horizon. Rises 03:19; sets 16:13 (45°N, local apparent solar time). Visual magnitude -1.8. The disk is 99.7% illuminated (nearly full). It is 36.7° from the Sun, on its west side. Motion is direct at 0.194° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 9.9° away. Jupiter: 9.9° from Zavijava 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 34.8° above the horizon. Rises 17:34; sets 06:35 (45°N, local apparent solar time). Visual magnitude 0.1. The disk is 100.0% illuminated (nearly full). It is 177.2° from the Sun, on its west side. Motion is retrograde at 0.080° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 8.2° away. Opposition in ecliptic longitude Oct 18 00:35 UTC. Saturn: 8.2° from Alrescha 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 15.0° above the horizon. Rises 19:23; sets 10:39 (45°N, local apparent solar time). Visual magnitude 5.6. The disk is 100.0% illuminated (nearly full). It is 134.9° from the Sun, on its west side. Motion is retrograde at 0.026° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 5.4° away. Conjunction with Moon in ecliptic longitude Oct 19 03:33 UTC. Uranus: 5.4° 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 39.3° above the horizon. Rises 16:45; sets 04:54 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 160.3° from the Sun, on its east side. Motion is retrograde at 0.026° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 18.9° away. Neptune: 18.9° 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 33.0° below the horizon. Rises 04:39; sets 17:26 (45°N, local apparent solar time). Visual magnitude 8.7. The disk is 99.5% illuminated (nearly full). It is 20.2° from the Sun, on its west side. Motion is direct at 0.453° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 10.7° away. Ceres: 10.7° from Zavijava 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 16.2° above the horizon. Rises 14:44; sets 23:22 (45°N, local apparent solar time). Visual magnitude 14.6. The disk is 100.0% illuminated (nearly full). It is 100.3° from the Sun, on its east side. Motion is retrograde at 0.000° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 9.4° away. Station Oct 18 03:50 UTC: turns direct. Pluto: 9.4° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude 5.0; retrograde motion; 1.1% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Oct 19 15:30 UTC. Mercury: 3.8° from Spica in the Pathfinder.
Venus
In solar glare; magnitude -3.9; direct motion; 95.4% illuminated. Monday 00:00 UTC snapshot. Venus: 3.3° from Zubenelgenubi in the Pathfinder.
Moon
Naked eye; magnitude -12.0; direct motion; 93.4% illuminated. Monday 00:00 UTC snapshot. Conjunction with Uranus in ecliptic longitude Oct 19 03:33 UTC. Moon: 16.6° from Hamal in the Pathfinder.
Mars
Naked eye; magnitude 1.4; direct motion; 95.6% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: 2.0° from Dschubba in the Pathfinder.
Jupiter
Naked eye; magnitude -1.8; direct motion; 99.7% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: 9.9° from Zavijava in the Pathfinder.
Saturn
Naked eye; magnitude 0.1; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Oct 18 00:35 UTC. Saturn: 8.2° from Alrescha in the Pathfinder.
Uranus
Binoculars; magnitude 5.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Oct 19 03:33 UTC. Uranus: 5.4° from Aldebaran in the Pathfinder.
Neptune
Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: 18.9° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 8.7; direct motion; 99.5% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: 10.7° from Zavijava in the Pathfinder.
Pluto
Substantial telescope; magnitude 14.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Station Oct 18 03:50 UTC: turns direct. Pluto: 9.4° from Dabih in the Pathfinder.