ISO 2026-W05
Week begins: Monday, January 26, 2026
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Jan 26, 2026 | ♒ 7 | 🌓 First Quarter — 04:47:23 UTC Mintaka (δ Ori) —  Var 2 2.3 2.1–2.3 — Tropical WinterArneb (α Lep) — 3 2.6 — Tropical Winterβ Dor —  4 3.8 — Southern WinterM1 —  8 8.4 — Tropical WinterFinest NGC 26 / NGC 1973 · with NGC 1975 & 1977 — 7 7.0 — Tropical WinterM42 — 4 4.0 — Tropical WinterM43 — 9 9.0 — Tropical Winter |
| Tue, Jan 27, 2026 | ♒ 8 | M36 — 6 6.3 — Northern WinterAlnilam (ε Ori) — Var 2 1.7 1.6–1.7 — Tropical WinterC103 / NGC 2070 · Tarantula Nebula — 1 1.0 — Antarctic WinterPhact (α Col) — 3 2.7 — Southern Winter |
| Wed, Jan 28, 2026 | ♒ 9 | Alnitak (ζ Ori) — 2 1.7 — Tropical WinterFinest NGC 28 / NGC 2024 · Flame Nebula — — Tropical WinterFinest NGC 27 / NGC 2022 · PN G196.6-10.9 — 12 11.7 — Tropical Winter |
| Thu, Jan 29, 2026 | ♒ 10 | M78 — 8 8.3 — Tropical Winterβ Pic — 4 3.9 — Southern WinterSaiph (κ Ori) — 2 2.1 — Tropical Winter |
| Fri, Jan 30, 2026 | ♒ 11 | Wazn (β Col) — 3 3.1 — Southern Winter |
| Sat, Jan 31, 2026 | ♒ 12 | M37 — 6 6.2 — Northern WinterBetelgeuse (α Ori) / Betelgeuse (α Orionis) — Var 0 0.5 0.0–1.6 — Tropical Winter |
| Sun, Feb 1, 2026 | ♒ 13 | 🌕 Full Moon · Wolf Moon — 22:09:15 UTC Menkalinan (β Aur) — Var 2 1.9 1.9–2.0 — Northern Winter |
Weekly Solar-System Ephemeris
Snapshot: Week begins January 26, 2026, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♒︎ 6°02′ β +0°00′ | ♉︎ 3°26′ β +4°13′ | ♒︎ 9°00′ β −2°05′ | ♒︎ 10°39′ β −1°15′ | ♒︎ 2°02′ β −1°01′ | ♋︎ 18°04′ β +0°18′ | ♓︎ 28°04′ β −2°11′ |
| Observing |  | -10.1 | ☉︎ | ☉︎ | ☉︎ | -2.6 | 1.0 |
| Rise | 07:15 | 10:13 | 07:37 | 07:37 | 07:10 | 15:03 | 09:31 |
| Set | 16:45 | 00:38 | 16:52 | 17:04 | 16:19 | 06:27 | 21:14 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♈︎ 13°28′ β −7°23′ | ♉︎ 27°30′ β −0°11′ | ♓︎ 29°59′ β −1°19′ | ♒︎ 3°30′ β −3°48′ |
| Observing | 9.1 | 5.7 | 7.8 | ☉︎ |
| Rise | 10:31 | 11:42 | 09:31 | 07:31 |
| Set | 22:24 | 02:33 | 21:26 | 16:16 |
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 2026-10-11 23:59:32 UTC
ISO 2026-W05 runs from January 26 through February 1. Mars and Pluto are separated by about 1.5° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Mercury and Venus are separated by about 1.6° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.
Naked eye: 🌓 First Quarter — 04:47:23 UTC. Moderate moonlight makes timing and local sky position important for faint targets. Use Mintaka, Arneb, Alnilam, Phact, Alnitak, Saiph, Wazn, Betelgeuse, Menkalinan as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -10.1; direct motion; 47.9% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Feb 01 22:09 UTC. Conjunction with Jupiter in ecliptic longitude Jan 31 03:18 UTC. Conjunction with Uranus in ecliptic longitude Jan 27 16:42 UTC. Mercury: In solar glare; magnitude -1.4; direct motion; 99.4% illuminated. Monday 00:00 UTC snapshot. Conjunction with Venus in ecliptic longitude Jan 29 10:17 UTC. Venus: In solar glare; magnitude -3.9; direct motion; 99.7% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Jan 29 10:17 UTC. Mars: In solar glare; magnitude 1.1; direct motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Pluto in ecliptic longitude Jan 27 23:01 UTC. Ceres: Telescope; magnitude 9.1; direct motion; 97.4% illuminated. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -2.6; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 31 03:18 UTC. Saturn: Naked eye; magnitude 1.0; direct motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Uranus: Binoculars; magnitude 5.7; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 27 16:42 UTC. Neptune: Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: In solar glare; magnitude 14.5; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mars in ecliptic longitude Jan 27 23:01 UTC.
Binoculars: Trace Dorado’s charted figure in the finder, then identify β Dor at its charted position. Trace Pictor’s charted figure in the finder, then identify β Pic at its charted position.
Small telescope: Crab Nebula: consult its dedicated finder and observing story for equipment guidance; with NGC 1975 & 1977: consult its dedicated finder and observing story for equipment guidance; Great Nebula in Orion: consult its dedicated finder and observing story for equipment guidance; De Mairan's Nebula: consult its dedicated finder and observing story for equipment guidance; M36: consult its dedicated finder and observing story for equipment guidance; Tarantula Nebula: consult its dedicated finder and observing story for equipment guidance; Flame Nebula: consult its dedicated finder and observing story for equipment guidance; PN G196.6-10.9: consult its dedicated finder and observing story for equipment guidance; M78: consult its dedicated finder and observing story for equipment guidance; M37: 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 07:37; sets 16:52 (45°N, local apparent solar time). Visual magnitude -1.4. The disk is 99.4% illuminated (nearly full). It is 3.6° from the Sun, on its east side. Motion is direct at 1.721° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.1° away. Venus is 1.8° away at the snapshot. Conjunction with Venus in ecliptic longitude Jan 29 10:17 UTC. Mercury: 8.1° from Dabih in the Pathfinder.
Venus
Venus: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:37; sets 17:04 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 99.7% illuminated (nearly full). It is 4.8° from the Sun, on its east side. Motion is direct at 1.256° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.5° away. Mercury is 1.8° away at the snapshot. Conjunction with Mercury in ecliptic longitude Jan 29 10:17 UTC. Venus: 8.5° from Dabih 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 37.0° above the horizon. Rises 10:13; sets 00:38 (45°N, local apparent solar time). Visual magnitude -10.1. The disk is 47.9% illuminated (waxing crescent). It is 87.4° from the Sun, on its east side. Motion is direct at 13.986° per day in ecliptic longitude at the snapshot. Position reference: Sheratan, 4.4° away. Opposition in ecliptic longitude Feb 01 22:09 UTC. Conjunction with Jupiter in ecliptic longitude Jan 31 03:18 UTC. Conjunction with Uranus in ecliptic longitude Jan 27 16:42 UTC. Moon: 4.4° from Sheratan in the Pathfinder.
Mars
Mars: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:10; sets 16:19 (45°N, local apparent solar time). Visual magnitude 1.1. The disk is 99.9% illuminated (nearly full). It is 4.1° from the Sun, on its west side. Motion is direct at 0.780° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 6.1° away. Pluto is 3.1° away at the snapshot. Conjunction with Pluto in ecliptic longitude Jan 27 23:01 UTC. Mars: 6.1° from Dabih 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 59.0° above the horizon. Rises 15:03; sets 06:27 (45°N, local apparent solar time). Visual magnitude -2.6. The disk is 99.9% illuminated (nearly full). It is 162.0° from the Sun, on its east side. Motion is retrograde at 0.122° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 8.4° away. Conjunction with Moon in ecliptic longitude Jan 31 03:18 UTC. Jupiter: 8.4° 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 2.0° above the horizon. Rises 09:31; sets 21:14 (45°N, local apparent solar time). Visual magnitude 1.0. The disk is 99.8% illuminated (nearly full). It is 52.1° from the Sun, on its east side. Motion is direct at 0.092° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.5° away. Neptune is 2.1° away at the snapshot. Saturn: 14.5° 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 55.3° above the horizon. Rises 11:42; sets 02:33 (45°N, local apparent solar time). Visual magnitude 5.7. The disk is 99.9% illuminated (nearly full). It is 111.5° from the Sun, on its east side. Motion is retrograde at 0.008° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 13.7° away. Conjunction with Moon in ecliptic longitude Jan 27 16:42 UTC. Uranus: 13.7° 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 4.1° above the horizon. Rises 09:31; sets 21:26 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 54.0° from the Sun, on its east side. Motion is direct at 0.025° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 15.1° away. Saturn is 2.1° away at the snapshot. Neptune: 15.1° 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 14.1° above the horizon. Rises 10:31; sets 22:24 (45°N, local apparent solar time). Visual magnitude 9.1. The disk is 97.4% illuminated (gibbous). It is 67.6° from the Sun, on its east side. Motion is direct at 0.294° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 16.2° away. Ceres: 16.2° from Alrescha in the Pathfinder.
Pluto
Pluto: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:31; sets 16:16 (45°N, local apparent solar time). Visual magnitude 14.5. The disk is 100.0% illuminated (nearly full). It is 4.6° from the Sun, on its west side. Motion is direct at 0.032° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.4° away. Mars is 3.1° away at the snapshot. Conjunction with Mars in ecliptic longitude Jan 27 23:01 UTC. Pluto: 8.4° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -1.4; direct motion; 99.4% illuminated. Monday 00:00 UTC snapshot. Conjunction with Venus in ecliptic longitude Jan 29 10:17 UTC. Mercury: 8.1° from Dabih in the Pathfinder.
Venus
In solar glare; magnitude -3.9; direct motion; 99.7% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Jan 29 10:17 UTC. Venus: 8.5° from Dabih in the Pathfinder.
Moon
Naked eye; magnitude -10.1; direct motion; 47.9% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Feb 01 22:09 UTC. Conjunction with Jupiter in ecliptic longitude Jan 31 03:18 UTC. Conjunction with Uranus in ecliptic longitude Jan 27 16:42 UTC. Moon: 4.4° from Sheratan in the Pathfinder.
Mars
In solar glare; magnitude 1.1; direct motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Pluto in ecliptic longitude Jan 27 23:01 UTC. Mars: 6.1° from Dabih in the Pathfinder.
Jupiter
Naked eye; magnitude -2.6; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 31 03:18 UTC. Jupiter: 8.4° from Pollux in the Pathfinder.
Saturn
Naked eye; magnitude 1.0; direct motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Saturn: 14.5° from Fumalsamakah in the Pathfinder.
Uranus
Binoculars; magnitude 5.7; retrograde motion; 99.9% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 27 16:42 UTC. Uranus: 13.7° from Aldebaran in the Pathfinder.
Neptune
Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: 15.1° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 9.1; direct motion; 97.4% illuminated. Monday 00:00 UTC snapshot. Ceres: 16.2° from Alrescha in the Pathfinder.
Pluto
In solar glare; magnitude 14.5; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mars in ecliptic longitude Jan 27 23:01 UTC. Pluto: 8.4° from Dabih in the Pathfinder.