ISO 2027-W49
Week begins: Monday, December 6, 2027
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Dec 6, 2027 | ♐ 15 | 🌓 First Quarter — 05:22:08 UTC |
| Tue, Dec 7, 2027 | ♐ 16 | Mothallah (α Tri) —  3 3.4 — Northern AutumnSheratan (β Ari) — 3 2.6 — Tropical Autumn |
| Wed, Dec 8, 2027 | ♐ 17 | C28 / NGC 752 —  6 5.7 — Northern Autumnα Hyi — 3 2.9 — Southern AutumnFinest NGC 14 / NGC 772 · Arp 78 — 11 10.6 — Tropical Autumn |
| Thu, Dec 9, 2027 | ♐ 18 | Alrescha (α Psc) —  4 3.8 — Tropical AutumnAlmach (Gam-1) — 2 2.1 — Northern Autumn |
| Fri, Dec 10, 2027 | ♐ 19 | Hamal (α Ari) — 2 2.0 — Northern Autumn |
| Sat, Dec 11, 2027 | ♐ 20 | β Tri — 3 3.0 — Northern Autumn |
| Sun, Dec 12, 2027 | ♐ 21 |
Weekly Solar-System Ephemeris
Snapshot: Week begins December 6, 2027, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♐︎ 13°37′ β +0°00′ | ♓︎ 11°11′ β +3°09′ | ♐︎ 10°20′ β −0°34′ | ♑︎ 13°00′ β −1°38′ | ♑︎ 7°47′ β −1°03′ | ♍︎ 25°23′ β +1°09′ | ♈︎ 21°19′ β −2°40′ |
| Observing |  | -10.0 | ☉︎ | -3.9 | 1.3 | -2.0 | 0.3 |
| Rise | 07:32 | 12:12 | 07:20 | 09:53 | 09:28 | 00:41 | 14:08 |
| Set | 16:28 | 23:42 | 16:11 | 18:24 | 18:02 | 13:12 | 03:00 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♎︎ 26°57′ β +8°09′ | ♊︎ 7°42′ β −0°05′ | ♈︎ 3°53′ β −1°26′ | ♒︎ 5°18′ β −4°44′ |
| Observing | 8.8 | 5.6 | 7.7 | 14.6 |
| Rise | 03:10 | 15:59 | 13:24 | 11:27 |
| Set | 14:56 | 07:11 | 01:31 | 20:07 |
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 00:25:45 UTC
ISO 2027-W49 runs from December 6 through December 12. Mercury is about 0.6° in ecliptic longitude from Antares in Scorpius. To find Venus, first identify Sagittarius, trace the Teapot of Sagittarius, and locate Nunki in that pattern. Venus lies about 0.6° away in ecliptic longitude at the Monday 00:00 UTC snapshot; use the finder to transfer from Nunki to the planet.
Naked eye: 🌓 First Quarter — 05:22:08 UTC. Moderate moonlight makes timing and local sky position important for faint targets. Use Mothallah, Sheratan, Head of Hydrus, Almach, Hamal, β Tri as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -10.0; direct motion; 48.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Saturn in ecliptic longitude Dec 09 06:17 UTC. Conjunction with Uranus in ecliptic longitude Dec 12 16:36 UTC. Conjunction with Neptune in ecliptic longitude Dec 07 21:04 UTC. Mercury: In solar glare; magnitude -1.1; direct motion; 99.6% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Dec 11 22:16 UTC. Venus: Naked eye; magnitude -3.9; direct motion; 87.4% 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; 97.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.8; direct motion; 98.0% 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; 99.2% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 0.3; retrograde motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Dec 09 06:17 UTC. Uranus: Binoculars; magnitude 5.6; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Dec 12 16:36 UTC. Neptune: Telescope; magnitude 7.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Dec 07 21:04 UTC. Pluto: Substantial telescope; magnitude 14.6; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot.
Binoculars: Trace Pisces’s charted figure in the finder, then identify Alrescha at its charted position.
Small telescope: NGC 752: consult its dedicated finder and observing story for equipment guidance; Arp 78: 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 07:20; sets 16:11 (45°N, local apparent solar time). Visual magnitude -1.1. The disk is 99.6% illuminated (nearly full). It is 3.3° from the Sun, on its west side. Motion is direct at 1.570° per day in ecliptic longitude at the snapshot. Position reference: Antares, 4.0° away. Solar conjunction in ecliptic longitude Dec 11 22:16 UTC. Mercury: 4.0° from Antares 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 25.9° below the horizon. Rises 09:53; sets 18:24 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 87.4% illuminated (gibbous). It is 29.4° from the Sun, on its east side. Motion is direct at 1.237° per day in ecliptic longitude at the snapshot. Position reference: Nunki, 1.8° away. Venus: 1.8° from Nunki 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 25.8° above the horizon. Rises 12:12; sets 23:42 (45°N, local apparent solar time). Visual magnitude -10.0. The disk is 48.0% illuminated (waxing crescent). It is 87.6° from the Sun, on its east side. Motion is direct at 11.894° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 9.7° away. Conjunction with Saturn in ecliptic longitude Dec 09 06:17 UTC. Conjunction with Uranus in ecliptic longitude Dec 12 16:36 UTC. Conjunction with Neptune in ecliptic longitude Dec 07 21:04 UTC. Moon: 9.7° 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 29.8° below the horizon. Rises 09:28; sets 18:02 (45°N, local apparent solar time). Visual magnitude 1.3. The disk is 97.9% illuminated (gibbous). It is 24.2° from the Sun, on its east side. Motion is direct at 0.765° per day in ecliptic longitude at the snapshot. Position reference: Nunki, 5.5° away. Mars: 5.5° from Nunki 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 34.6° below the horizon. Rises 00:41; sets 13:12 (45°N, local apparent solar time). Visual magnitude -2.0. The disk is 99.2% illuminated (nearly full). It is 78.2° from the Sun, on its west side. Motion is direct at 0.109° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 2.2° away. Jupiter: 2.2° 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 50.3° above the horizon. Rises 14:08; sets 03:00 (45°N, local apparent solar time). Visual magnitude 0.3. The disk is 99.8% illuminated (nearly full). It is 127.7° from the Sun, on its east side. Motion is retrograde at 0.033° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 10.6° away. Conjunction with Moon in ecliptic longitude Dec 09 06:17 UTC. Saturn: 10.6° 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 50.5° above the horizon. Rises 15:59; sets 07:11 (45°N, local apparent solar time). Visual magnitude 5.6. The disk is 100.0% illuminated (nearly full). It is 174.1° from the Sun, on its east side. Motion is retrograde at 0.042° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 5.9° away. Conjunction with Moon in ecliptic longitude Dec 12 16:36 UTC. Uranus: 5.9° 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 40.7° above the horizon. Rises 13:24; sets 01:31 (45°N, local apparent solar time). Visual magnitude 7.7. The disk is 100.0% illuminated (nearly full). It is 110.3° from the Sun, on its east side. Motion is retrograde at 0.005° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 18.2° away. Conjunction with Moon in ecliptic longitude Dec 07 21:04 UTC. Neptune: 18.2° 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 47.6° below the horizon. Rises 03:10; sets 14:56 (45°N, local apparent solar time). Visual magnitude 8.8. The disk is 98.0% illuminated (gibbous). It is 47.2° from the Sun, on its west side. Motion is direct at 0.409° per day in ecliptic longitude at the snapshot. Position reference: Spica, 10.6° away. Ceres: 10.6° from Spica 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 8.8° below the horizon. Rises 11:27; sets 20:07 (45°N, local apparent solar time). Visual magnitude 14.6. The disk is 100.0% illuminated (nearly full). It is 51.8° from the Sun, on its east side. Motion is direct at 0.022° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 9.4° away. Pluto: 9.4° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -1.1; direct motion; 99.6% illuminated. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Dec 11 22:16 UTC. Mercury: 4.0° from Antares in the Pathfinder.
Venus
Naked eye; magnitude -3.9; direct motion; 87.4% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Venus: 1.8° from Nunki in the Pathfinder.
Moon
Naked eye; magnitude -10.0; direct motion; 48.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Saturn in ecliptic longitude Dec 09 06:17 UTC. Conjunction with Uranus in ecliptic longitude Dec 12 16:36 UTC. Conjunction with Neptune in ecliptic longitude Dec 07 21:04 UTC. Moon: 9.7° from Fumalsamakah in the Pathfinder.
Mars
Naked eye; magnitude 1.3; direct motion; 97.9% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Mars: 5.5° from Nunki in the Pathfinder.
Jupiter
Naked eye; magnitude -2.0; direct motion; 99.2% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Jupiter: 2.2° from Zavijava in the Pathfinder.
Saturn
Naked eye; magnitude 0.3; retrograde motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Dec 09 06:17 UTC. Saturn: 10.6° 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 Dec 12 16:36 UTC. Uranus: 5.9° 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 Dec 07 21:04 UTC. Neptune: 18.2° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 8.8; direct motion; 98.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Ceres: 10.6° from Spica in the Pathfinder.
Pluto
Substantial telescope; magnitude 14.6; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Pluto: 9.4° from Dabih in the Pathfinder.