ISO 2027-W16
Week begins: Monday, April 19, 2027
Calendar
| Date | Zodiac day | Events |
|---|---|---|
| Mon, Apr 19, 2027 | ♈ 31 | Eta Carinae (η Carinae) —  — Southern SpringM96 —  9 9.2 — Tropical SpringM105 — 9 9.3 — Tropical SpringFinest NGC 55 / NGC 3384 · MCG 2-28-12 — 11 10.9 — Tropical Spring |
| Tue, Apr 20, 2027 | ♉ 1 | ♉ Sun enters Taurus — 07:17:38 UTC 🌕 Full Moon · Milk Moon — 22:27:10 UTC |
| Wed, Apr 21, 2027 | ♉ 2 | Finest NGC 53 / NGC 3432 · Arp 206 — 12 11.6 — Northern Spring |
| Thu, Apr 22, 2027 | ♉ 3 | Wolf 359 (CN Leonis) — — Tropical SpringAlkes (α Crt) —  4 4.1 — Tropical Spring |
| Fri, Apr 23, 2027 | ♉ 4 | Merak (β UMa) — 2 2.3 — Northern SpringLalande 21185 (Gliese 411) — — Northern Spring |
| Sat, Apr 24, 2027 | ♉ 5 | Dubhe (α UMa) — 2 1.8 — Northern SpringFinest NGC 56 / NGC 3521 · MCG 0-28-30 — 10 9.9 — Tropical SpringC91 / NGC 3532 — 3 3.0 — Southern Spring |
| Sun, Apr 25, 2027 | ♉ 6 |
Weekly Solar-System Ephemeris
Snapshot: Week begins April 19, 2027, 00:00 UTC.
(-90° to +90°; defaults +45°, 21:00 LAT)
| Body | ☉︎ | ☽︎ | ☿︎ | ♀︎ | ♂︎ | ♃︎ | ♄︎ |
|---|---|---|---|---|---|---|---|
| Ecliptic | ♈︎ 28°44′ β −0°00′ | ♎︎ 4°23′ β −3°39′ | ♈︎ 18°06′ β −1°44′ | ♓︎ 28°35′ β −1°30′ | ♌︎ 22°39′ β +2°32′ | ♌︎ 17°03′ β +1°01′ | ♈︎ 19°05′ β −2°14′ |
| Observing |  | -12.1 | ☉︎ | -3.9 | 0.0 | -2.2 | ☉︎ |
| Rise | 05:11 | 16:40 | 04:58 | 04:16 | 12:44 | 12:19 | 05:03 |
| Set | 18:49 | 04:07 | 17:47 | 16:05 | 03:09 | 02:46 | 17:51 |
Extended targets:
| Body | ⚳︎ | ♅︎ | ♆︎ | ♇︎ |
|---|---|---|---|---|
| Ecliptic | ♋︎ 18°59′ β +8°25′ | ♊︎ 3°38′ β −0°07′ | ♈︎ 5°01′ β −1°21′ | ♒︎ 7°05′ β −4°30′ |
| Observing | 8.5 | 5.8 | 7.8 | 14.6 |
| Rise | 09:12 | 06:47 | 04:28 | 02:32 |
| Set | 02:09 | 21:52 | 16:39 | 11:20 |
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 10:06:36 UTC
ISO 2027-W16 runs from April 19 through April 25. Mercury and Saturn are separated by about 1.0° in geocentric ecliptic longitude at the Monday 00:00 UTC snapshot.
Naked eye: 🌕 Full Moon · Milk Moon — 22:27:10 UTC. Bright moonlight favors prominent stars and planets while reducing contrast on faint deep-sky objects. Use Merak, Dubhe as the week’s fixed-sky framework.
Planets: Moon: Naked eye; magnitude -12.1; direct motion; 95.5% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Apr 20 22:27 UTC. Mercury: In solar glare; magnitude -1.1; direct motion; 93.1% illuminated. Monday 00:00 UTC snapshot. Conjunction with Saturn in ecliptic longitude Apr 19 13:03 UTC. Venus: Naked eye; magnitude -3.9; direct motion; 86.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Neptune in ecliptic longitude Apr 24 10:55 UTC. Mars: Naked eye; magnitude 0.0; direct motion; 91.6% illuminated. Monday 00:00 UTC snapshot. Ceres: Telescope; magnitude 8.5; direct motion; 96.1% illuminated. Monday 00:00 UTC snapshot. Jupiter: Naked eye; magnitude -2.2; direct motion; 99.2% illuminated. Monday 00:00 UTC snapshot. Saturn: In solar glare; magnitude 0.7; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Apr 19 13:03 UTC. Uranus: Binoculars; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Neptune: Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Venus in ecliptic longitude Apr 24 10:55 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 Crater’s charted figure in the finder, then identify Alkes at its charted position.
Small telescope: M96: consult its dedicated finder and observing story for equipment guidance; M105: consult its dedicated finder and observing story for equipment guidance; MCG 2-28-12: consult its dedicated finder and observing story for equipment guidance; Arp 206: consult its dedicated finder and observing story for equipment guidance; MCG 0-28-30: consult its dedicated finder and observing story for equipment guidance; NGC 3532: 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 04:58; sets 17:47 (45°N, local apparent solar time). Visual magnitude -1.1. The disk is 93.1% illuminated (gibbous). It is 10.8° from the Sun, on its west side. Motion is direct at 1.934° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 13.7° away. Saturn is 1.1° away at the snapshot. Conjunction with Saturn in ecliptic longitude Apr 19 13:03 UTC. Mercury: 13.7° from Alrescha 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 44.4° below the horizon. Rises 04:16; sets 16:05 (45°N, local apparent solar time). Visual magnitude -3.9. The disk is 86.0% illuminated (gibbous). It is 30.2° from the Sun, on its west side. Motion is direct at 1.212° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 14.3° away. Conjunction with Neptune in ecliptic longitude Apr 24 10:55 UTC. Venus: 14.3° from Fumalsamakah 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 36.7° above the horizon. Rises 16:40; sets 04:07 (45°N, local apparent solar time). Visual magnitude -12.1. The disk is 95.5% illuminated (waxing gibbous). It is 155.4° from the Sun, on its east side. Motion is direct at 13.746° per day in ecliptic longitude at the snapshot. Position reference: Zavijava, 8.1° away. Opposition in ecliptic longitude Apr 20 22:27 UTC. Moon: 8.1° from Zavijava 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 58.5° above the horizon. Rises 12:44; sets 03:09 (45°N, local apparent solar time). Visual magnitude 0.0. The disk is 91.6% illuminated (gibbous). It is 113.9° from the Sun, on its east side. Motion is direct at 0.188° per day in ecliptic longitude at the snapshot. Position reference: Regulus, 7.8° away. Mars: 7.8° from Regulus 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 56.4° above the horizon. Rises 12:19; sets 02:46 (45°N, local apparent solar time). Visual magnitude -2.2. The disk is 99.2% illuminated (nearly full). It is 108.3° from the Sun, on its east side. Motion is direct at 0.018° per day in ecliptic longitude at the snapshot. Position reference: Acubens, 6.8° away. Jupiter: 6.8° from Acubens in the Pathfinder.
Saturn
Saturn: in solar glare at the Monday 00:00 UTC snapshot. Rises 05:03; sets 17:51 (45°N, local apparent solar time). Visual magnitude 0.7. The disk is 100.0% illuminated (nearly full). It is 9.9° from the Sun, on its west side. Motion is direct at 0.125° per day in ecliptic longitude at the snapshot. Position reference: Alrescha, 12.6° away. Mercury is 1.1° away at the snapshot. Conjunction with Mercury in ecliptic longitude Apr 19 13:03 UTC. Saturn: 12.6° 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 7.7° above the horizon. Rises 06:47; sets 21:52 (45°N, local apparent solar time). Visual magnitude 5.8. The disk is 100.0% illuminated (nearly full). It is 34.9° from the Sun, on its east side. Motion is direct at 0.050° per day in ecliptic longitude at the snapshot. Position reference: Aldebaran, 8.4° away. Uranus: 8.4° 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 39.9° below the horizon. Rises 04:28; sets 16:39 (45°N, local apparent solar time). Visual magnitude 7.8. The disk is 100.0% illuminated (nearly full). It is 23.8° from the Sun, on its west side. Motion is direct at 0.035° per day in ecliptic longitude at the snapshot. Position reference: Fumalsamakah, 19.1° away. Conjunction with Venus in ecliptic longitude Apr 24 10:55 UTC. Neptune: 19.1° 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 48.7° above the horizon. Rises 09:12; sets 02:09 (45°N, local apparent solar time). Visual magnitude 8.5. The disk is 96.1% illuminated (gibbous). It is 80.4° from the Sun, on its east side. Motion is direct at 0.289° per day in ecliptic longitude at the snapshot. Position reference: Castor, 2.3° away. Ceres: 2.3° from Castor 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 56.5° below the horizon. Rises 02:32; sets 11:20 (45°N, local apparent solar time). Visual magnitude 14.6. The disk is 100.0% illuminated (nearly full). It is 81.7° from the Sun, on its west side. Motion is direct at 0.009° per day in ecliptic longitude at the snapshot. Position reference: Dabih, 9.5° away. Pluto: 9.5° from Dabih in the Pathfinder.
Highlights
Mercury
In solar glare; magnitude -1.1; direct motion; 93.1% illuminated. Monday 00:00 UTC snapshot. Conjunction with Saturn in ecliptic longitude Apr 19 13:03 UTC. Mercury: 13.7° from Alrescha in the Pathfinder.
Venus
Naked eye; magnitude -3.9; direct motion; 86.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Neptune in ecliptic longitude Apr 24 10:55 UTC. Venus: 14.3° from Fumalsamakah in the Pathfinder.
Moon
Naked eye; magnitude -12.1; direct motion; 95.5% illuminated. Monday 00:00 UTC snapshot. Opposition in ecliptic longitude Apr 20 22:27 UTC. Moon: 8.1° from Zavijava in the Pathfinder.
Mars
Naked eye; magnitude 0.0; direct motion; 91.6% illuminated. Monday 00:00 UTC snapshot. Mars: 7.8° from Regulus in the Pathfinder.
Jupiter
Naked eye; magnitude -2.2; direct motion; 99.2% illuminated. Monday 00:00 UTC snapshot. Jupiter: 6.8° from Acubens in the Pathfinder.
Saturn
In solar glare; magnitude 0.7; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Conjunction with Mercury in ecliptic longitude Apr 19 13:03 UTC. Saturn: 12.6° from Alrescha in the Pathfinder.
Uranus
Binoculars; magnitude 5.8; direct motion; 100.0% illuminated. Monday 00:00 UTC snapshot. Uranus: 8.4° from Aldebaran in the Pathfinder.
Neptune
Telescope; magnitude 7.8; direct motion; 100.0% illuminated. Below the horizon at 21:00 local apparent solar time, 45°N. Monday 00:00 UTC snapshot. Conjunction with Venus in ecliptic longitude Apr 24 10:55 UTC. Neptune: 19.1° from Fumalsamakah in the Pathfinder.
Ceres
Telescope; magnitude 8.5; direct motion; 96.1% illuminated. Monday 00:00 UTC snapshot. Ceres: 2.3° from Castor 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: 9.5° from Dabih in the Pathfinder.