OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

41.29°N, 141.22°EAsia/Tokyo

Deep Astronomical Night-53.0° (< −18°)

00:57:47

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 9m of true darkness · 13h 13m total night

DaylightCivil (−6°)Nautical (−12°)Astro (−18°)Dark Sky (<−18°)

TRUE DARK SKY WINDOW

Sunset16:43

Civil Dusk17:11

Nautical17:43

Full Dark18:15

Nadir23:19

Dark Ends04:24

Nautical04:56

Civil Dawn05:28

Sunrise05:56

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE25.2°

DISTANCE380,432 km

Moonrise15:01

Moonset03:25

HorizonAbove

LUNAR INTERFERENCE INDEX39% · Moderate Lunar Glow

Milky Way contrast is softened. Bright open clusters and double stars are optimal.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

78/100

Good Stargazing

Fine observing conditions. Open star clusters and nebulae will exhibit crisp structure.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to Asia/Tokyo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Below Horizon	-4.3	-57.4°	52°	Libra	06:14	11:10	16:11	Naked Eye
Jupiter♃	Rising / Setting	-2.0	7.3°	77°	Leo	00:14	07:09	14:06	Naked Eye
Saturn♄	Optimal Visibility	0.3	34.7°	235°	Pisces	16:00	22:07	04:14	Naked Eye
Mars♂	Visible Low	1.0	15.8°	80°	Cancer	23:26	06:35	13:45	Naked Eye
Mercury☿	Below Horizon	0.4	-69.0°	14°	Libra	07:51	12:35	17:23	Binoculars
Uranus♅	Optimal Visibility	5.6	67.9°	154°	Taurus	18:17	01:38	08:59	Binoculars
Neptune♆	Visible Low	7.8	28.5°	241°	Pisces	15:37	21:37	03:38	Telescope

TONIGHT'S VIEWING SCHEDULE

When & Where to Look Tonight

A simple guide to when each object is above your horizon. No astronomy chart reading required.

BEST TIMEHighest in your sky

The MoonNaked Eye · High in the sky

RISES15:01

BEST TIME21:07S · 49° high

SETS03:25

Reaches about 49° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Moderate Lunar Glow.

JupiterNaked Eye · High in the sky

RISES00:14

BEST TIME07:09S · 63° high

SETS14:06

Reaches about 63° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:00

BEST TIME22:07S · 50° high

SETS04:14

Reaches about 50° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · Good height

RISES06:14

BEST TIME11:10S · 31° high

SETS16:11

Reaches about 31° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES23:26

BEST TIME06:35S · 67° high

SETS13:45

Reaches about 67° above the horizon at its highest point.Distinctive crimson hue; polar ice cap discernible near opposition.

OBSERVING LOG & TARGET LIST

Tonight's Prime Deep-Sky Targets

0 / 6 targets logged tonight

M31 / NGC 224 · Andromeda

Andromeda Galaxy

Spiral Galaxy (2.5M ly)

Our galactic neighbor; visible as a ghostly oval smudge with dense radiant stellar core.

M45 · Taurus

The Pleiades (Seven Sisters)

Open Star Cluster

Breathtaking blue diamond cluster enshrouded in delicate interstellar reflection nebulosity.

M42 / NGC 1976 · Orion

Great Orion Nebula

Diffuse Emission Nebula

Star nursery harboring the brilliant Trapezium cluster with sprawling bat-wing filaments.

NGC 869 & NGC 884 · Perseus

The Double Cluster

Twin Open Clusters

Pair of spectacular shimmering jewel-boxes bursting with ruby supergiant stars.

M13 / NGC 6205 · Hercules

Great Globular Cluster in Hercules

Globular Cluster (300k stars)

Massive beehive of ancient stars packed tightly together into a blazing central ball.

M57 / NGC 6720 · Lyra

The Ring Nebula

Planetary Nebula

Delicate glowing smoke-ring left behind by a dying star 2,500 light-years away.