OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

34.48°N, 136.70°EAsia/Tokyo

Deep Astronomical Night-28.0° (< −18°)

03:50:40

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 12h 56m total night

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

TRUE DARK SKY WINDOW

Sunset17:09

Civil Dusk17:35

Nautical18:04

Full Dark18:33

Nadir23:37

Dark Ends04:41

Nautical05:10

Civil Dawn05:40

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-1.7°

DISTANCE379,785 km

Moonrise15:46

Moonset03:43

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	-29.9°	92°	Libra	06:17	11:28	16:43	Naked Eye
Jupiter♃	Optimal Visibility	-2.0	37.4°	98°	Leo	00:44	07:27	14:09	Naked Eye
Saturn♄	Rising / Setting	0.3	7.9°	266°	Pisces	16:20	22:25	04:31	Naked Eye
Mars♂	Optimal Visibility	1.0	46.2°	100°	Cancer	23:59	06:53	13:46	Naked Eye
Mercury☿	Below Horizon	0.4	-48.9°	82°	Libra	07:52	12:53	17:58	Binoculars
Uranus♅	Optimal Visibility	5.6	61.5°	249°	Taurus	18:53	01:56	08:59	Binoculars
Neptune♆	Rising / Setting	7.8	1.1°	269°	Pisces	15:55	21:55	03:56	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

RISES15:46

BEST TIME21:26S · 56° high

SETS03:43

Reaches about 56° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES00:44

BEST TIME07:27S · 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

RISES16:20

BEST TIME22:25S · 57° high

SETS04:31

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 TIME11:28S · 38° high

SETS16:43

Reaches about 38° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES23:59

BEST TIME06:53S · 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.