OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

35.35°N, 137.18°EAsia/Tokyo

Deep Astronomical Night-41.6° (< −18°)

02:40:55

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 12h 58m total night

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

TRUE DARK SKY WINDOW

Sunset17:06

Civil Dusk17:32

Nautical18:02

Full Dark18:31

Nadir23:35

Dark Ends04:39

Nautical05:09

Civil Dawn05:39

Sunrise06:04

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE11.0°

DISTANCE380,046 km

Moonrise15:17

Moonset03:41

HorizonAbove

LUNAR INTERFERENCE INDEX18% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

85/100

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	-43.8°	81°	Libra	06:17	11:26	16:40	Naked Eye
Jupiter♃	Visible Low	-2.0	23.5°	89°	Leo	00:41	07:25	14:09	Naked Eye
Saturn♄	Visible Low	0.3	21.5°	256°	Pisces	16:18	22:23	04:29	Naked Eye
Mars♂	Optimal Visibility	1.0	32.3°	90°	Cancer	23:55	06:51	13:46	Naked Eye
Mercury☿	Below Horizon	0.4	-62.2°	66°	Libra	07:52	12:51	17:54	Binoculars
Uranus♅	Optimal Visibility	5.6	72.4°	218°	Taurus	18:49	01:54	08:59	Binoculars
Neptune♆	Visible Low	7.8	14.5°	259°	Pisces	15:53	21:54	03:54	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

RISES15:17

BEST TIME21:24S · 55° high

SETS03:41

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

JupiterNaked Eye · High in the sky

RISES00:41

BEST TIME07:25S · 69° high

SETS14:09

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

RISES16:18

BEST TIME22:23S · 56° high

SETS04:29

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

RISES06:17

BEST TIME11:26S · 37° high

SETS16:40

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

RISES23:55

BEST TIME06:51S · 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.