ISO 2026-W03
Week begins: Monday, January 12, 2026
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Jan 12, 2026 | ♑ 23 | α Dor —  3 3.3 — Southern WinterAldebaran (α Tau) — Var 1 0.9 0.8–1.0 — Tropical Winter |
| Tue, Jan 13, 2026 | ♑ 24 | α Cae —  4 4.4 — Southern Winter |
| Wed, Jan 14, 2026 | ♑ 25 | β Cae — 5 5.0 — Southern Winter |
| Thu, Jan 15, 2026 | ♑ 26 | |
| Fri, Jan 16, 2026 | ♑ 27 | |
| Sat, Jan 17, 2026 | ♑ 28 | α Cam — 4 4.3 — Northern Winter |
| Sun, Jan 18, 2026 | ♑ 29 | 🌑 New Moon — 19:51:59 UTC |
Weekly Solar-System Ephemeris
Snapshot: Week begins January 12, 2026, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♑︎ 21°47′ β −0°00′ | ♏︎ 6°30′ β −4°16′ | ♑︎ 15°48′ β −1°35′ | ♑︎ 23°03′ β −0°53′ | ♑︎ 21°09′ β −0°57′ | ♋︎ 19°53′ β +0°16′ | ♓︎ 26°54′ β −2°13′ |
| Observing |  | -9.5 | ☉︎ | ☉︎ | ☉︎ | -2.7 | 1.0 |
| Rise | 07:28 | 01:47 | 07:18 | 07:40 | 07:33 | 16:12 | 10:29 |
| Set | 16:32 | 11:26 | 15:53 | 16:32 | 16:23 | 07:33 | 22:08 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♈︎ 9°38′ β −8°11′ | ♉︎ 27°41′ β −0°12′ | ♓︎ 29°41′ β −1°20′ | ♒︎ 3°04′ β −3°47′ |
| Observing |  9.0 | 5.7 | 7.8 | ☉︎ |
| Rise | 11:27 | 12:42 | 10:30 | 08:29 |
| Set | 23:02 | 03:34 | 22:24 | 17:13 |
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 23:16:57 UTC
ISO 2026-W03 runs from January 12 through January 18. Venus and Mars are separated by about 1.9° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot. Saturn and Neptune are separated by about 2.8° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.
Naked eye: 🌑 New Moon — 19:51:59 UTC. The dark Moon favors faint targets and extended star fields. Use α Dor, Aldebaran as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -9.5; direct motion; 37.5% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Jan 18 19:51 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 15:11 UTC. Mercury: In solar glare; magnitude -0.9; direct motion; 98.7% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 07:40 UTC. Venus: In solar glare; magnitude -3.9; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Mars: In solar glare; magnitude 1.1; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 18 15:11 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 07:40 UTC. Ceres: Telescope; magnitude 9.0; direct motion; 97.1% illuminated. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -2.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Saturn: Naked eye; magnitude 1.0; direct motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Uranus: Binoculars; magnitude 5.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: In solar glare; magnitude 14.6; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot.
Binoculars: Trace Caelum’s charted figure in the finder, then identify α Cae at its charted position. Trace Caelum’s charted figure in the finder, then identify β Cae at its charted position. Trace Camelopardalis’s charted figure in the finder, then identify α Cam at its charted position.
Small telescope: No fixed-sky Calendar object is classified for telescope observing this week.
Substantial telescope: No fixed-sky Calendar object is classified as requiring a substantial telescope this week.
No deep-sky objects are featured this week.
Other objects listed this week: None
Mercury
Mercury: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:18; sets 15:53 (45°N, local apparent solar time). Visual magnitude -0.9. The disk is 98.7% illuminated (gibbous). It is 6.2° from the Sun, on its west side. Motion is direct at 1.597° per day in ecliptic longitude at the snapshot. Position reference: Nunki, 3.6° away. Conjunction with Moon in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 07:40 UTC. Mercury: 3.6° from Nunki in the Pathfinder.
Venus
Venus: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:40; sets 16:32 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 100.0% illuminated (nearly full). It is 1.5° from the Sun, on its east side. Motion is direct at 1.258° per day in ecliptic longitude at the snapshot. Position reference: Nunki, 10.6° away. Mars is 1.9° away at the snapshot. Venus: 10.6° 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 49.5° below the horizon. Rises 01:47; sets 11:26 (45°N, local apparent solar time). Visual magnitude -9.5. The disk is 37.5% illuminated (waning crescent). It is 75.3° from the Sun, on its west side. Motion is direct at 11.906° per day in ecliptic longitude at the snapshot. Position reference: Zubenelgenubi, 10.0° away. Solar conjunction in ecliptic longitude Jan 18 19:51 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 15:11 UTC. Moon: 10.0° from Zubenelgenubi in the Pathfinder.
Mars
Mars: in solar glare at the Monday 00:00 UTC snapshot. Rises 07:33; sets 16:23 (45°N, local apparent solar time). Visual magnitude 1.1. The disk is 100.0% illuminated (nearly full). It is 1.1° from the Sun, on its west side. Motion is direct at 0.773° per day in ecliptic longitude at the snapshot. Position reference: Nunki, 8.8° away. Venus is 1.9° away at the snapshot. Conjunction with Moon in ecliptic longitude Jan 18 15:11 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 07:40 UTC. Mars: 8.8° 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 48.3° above the horizon. Rises 16:12; sets 07:33 (45°N, local apparent solar time). Visual magnitude -2.7. The disk is 100.0% illuminated (nearly full). It is 178.1° from the Sun, on its east side. Motion is retrograde at 0.135° per day in ecliptic longitude at the snapshot. Position reference: Pollux, 7.4° away. Jupiter: 7.4° 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 11.2° above the horizon. Rises 10:29; sets 22:08 (45°N, local apparent solar time). Visual magnitude 1.0. The disk is 99.8% illuminated (nearly full). It is 65.1° from the Sun, on its east side. Motion is direct at 0.074° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 13.8° away. Neptune is 2.9° away at the snapshot. Saturn: 13.8° 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 62.2° above the horizon. Rises 12:42; sets 03:34 (45°N, local apparent solar time). Visual magnitude 5.7. The disk is 100.0% illuminated (nearly full). It is 125.9° from the Sun, on its east side. Motion is retrograde at 0.020° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 13.5° away. Uranus: 13.5° 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 14.1° above the horizon. Rises 10:30; sets 22:24 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 67.9° from the Sun, on its east side. Motion is direct at 0.018° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.9° away. Saturn is 2.9° away at the snapshot. Neptune: 14.9° 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 20.0° above the horizon. Rises 11:27; sets 23:02 (45°N, local apparent solar time). Visual magnitude 9.0. The disk is 97.1% illuminated (gibbous). It is 78.0° from the Sun, on its east side. Motion is direct at 0.252° per day in ecliptic longitude at the snapshot. Position reference: Diphda, 14.2° away. Ceres: 14.2° from Diphda in the Pathfinder.
Pluto
Pluto: in solar glare at the Monday 00:00 UTC snapshot. Rises 08:29; sets 17:13 (45°N, local apparent solar time). Visual magnitude 14.6. The disk is 100.0% illuminated (nearly full). It is 11.9° from the Sun, on its east side. Motion is direct at 0.032° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 8.5° away. Pluto: 8.5° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -0.9; direct motion; 98.7% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 07:40 UTC. Mercury: 3.6° from Nunki in the Pathfinder.
Venus
In solar glare; magnitude -3.9; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Venus: 10.6° from Nunki in the Pathfinder.
Moon
Naked eye; magnitude -9.5; direct motion; 37.5% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Solar conjunction in ecliptic longitude Jan 18 19:51 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 15:47 UTC. Conjunction with Mars in ecliptic longitude Jan 18 15:11 UTC. Moon: 10.0° from Zubenelgenubi in the Pathfinder.
Mars
In solar glare; magnitude 1.1; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Moon in ecliptic longitude Jan 18 15:11 UTC. Conjunction with Mercury in ecliptic longitude Jan 18 07:40 UTC. Mars: 8.8° from Nunki in the Pathfinder.
Jupiter
Naked eye; magnitude -2.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Jupiter: 7.4° from Pollux in the Pathfinder.
Saturn
Naked eye; magnitude 1.0; direct motion; 99.8% illuminated. Monday 00:00 UTC snapshot. Saturn: 13.8° from Fumalsamakah in the Pathfinder.
Uranus
Binoculars; magnitude 5.7; retrograde motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Uranus: 13.5° from Aldebaran in the Pathfinder.
Neptune
Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: 14.9° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 9.0; direct motion; 97.1% illuminated. Monday 00:00 UTC snapshot. Ceres: 14.2° from Diphda in the Pathfinder.
Pluto
In solar glare; magnitude 14.6; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Pluto: 8.5° from Dabih in the Pathfinder.