OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

35.93°N, 140.55°EAsia/Tokyo

Deep Astronomical Night-24.5° (< −18°)

03:51:54

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 13h 0m total night

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

TRUE DARK SKY WINDOW

Sunset16:52

Civil Dusk17:18

Nautical17:48

Full Dark18:18

Nadir23:22

Dark Ends04:26

Nautical04:56

Civil Dawn05:26

Sunrise05:52

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-5.0°

DISTANCE379,780 km

Moonrise15:29

Moonset03:27

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	-26.5°	93°	Libra	06:05	11:12	16:25	Naked Eye
Jupiter♃	Optimal Visibility	-2.0	40.5°	102°	Leo	00:26	07:11	13:56	Naked Eye
Saturn♄	Rising / Setting	0.3	4.5°	269°	Pisces	16:04	22:10	04:16	Naked Eye
Mars♂	Optimal Visibility	1.0	49.2°	105°	Cancer	23:41	06:37	13:34	Naked Eye
Mercury☿	Below Horizon	0.4	-45.3°	84°	Libra	07:40	12:38	17:39	Binoculars
Uranus♅	Optimal Visibility	5.6	57.8°	251°	Taurus	18:35	01:41	08:47	Binoculars
Neptune♆	Below Horizon	7.8	-2.1°	271°	Pisces	15:35	21:40	03:41	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

RISES15:29

BEST TIME21:10S · 54° high

SETS03:27

Reaches about 54° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES00:26

BEST TIME07:11S · 69° high

SETS13:56

Reaches about 69° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:04

BEST TIME22:10S · 56° high

SETS04:16

Reaches about 56° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · Good height

RISES06:05

BEST TIME11:12S · 36° high

SETS16:25

Reaches about 36° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES23:41

BEST TIME06:37S · 72° high

SETS13:34

Reaches about 72° 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.