OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

34.88°N, 136.93°EAsia/Tokyo

Deep Astronomical Night-27.8° (< −18°)

03:50:36

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 12h 57m total night

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

TRUE DARK SKY WINDOW

Sunset17:08

Civil Dusk17:34

Nautical18:03

Full Dark18:32

Nadir23:36

Dark Ends04:40

Nautical05:10

Civil Dawn05:39

Sunrise06:05

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE-1.8°

DISTANCE379,785 km

Moonrise15:44

Moonset03:42

HorizonBelow

LUNAR INTERFERENCE INDEX0% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

92/100

Exceptional Stargazing

Pristine dark skies with clear transparency. Ideal for astrophotography & faint deep sky targets.

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	-29.7°	92°	Libra	06:17	11:27	16:42	Naked Eye
Jupiter♃	Optimal Visibility	-2.0	37.5°	99°	Leo	00:42	07:26	14:09	Naked Eye
Saturn♄	Rising / Setting	0.3	7.7°	266°	Pisces	16:19	22:24	04:30	Naked Eye
Mars♂	Optimal Visibility	1.0	46.3°	101°	Cancer	23:57	06:52	13:46	Naked Eye
Mercury☿	Below Horizon	0.4	-48.7°	82°	Libra	07:52	12:52	17:56	Binoculars
Uranus♅	Optimal Visibility	5.6	61.2°	249°	Taurus	18:52	01:55	08:59	Binoculars
Neptune♆	Rising / Setting	7.8	0.9°	269°	Pisces	15:54	21:55	03:55	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

RISES15:44

BEST TIME21:25S · 55° high

SETS03:42

Reaches about 55° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES00:42

BEST TIME07:26S · 70° high

SETS14:09

Reaches about 70° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:19

BEST TIME22:24S · 57° high

SETS04:30

Reaches about 57° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · Good height

RISES06:17

BEST TIME11:27S · 37° high

SETS16:42

Reaches about 37° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES23:57

BEST TIME06:52S · 73° high

SETS13:46

Reaches about 73° 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.