OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

35.51°N, 137.82°EAsia/Tokyo

Deep Astronomical Night-30.5° (< −18°)

03:33:16

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 12h 59m total night

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

TRUE DARK SKY WINDOW

Sunset17:04

Civil Dusk17:29

Nautical17:59

Full Dark18:29

Nadir23:33

Dark Ends04:37

Nautical05:06

Civil Dawn05:36

Sunrise06:02

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE0.7°

DISTANCE379,850 km

Moonrise15:40

Moonset03:38

HorizonAbove

LUNAR INTERFERENCE INDEX1% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

91/100

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	-32.6°	89°	Libra	06:15	11:23	16:37	Naked Eye
Jupiter♃	Optimal Visibility	-2.0	34.7°	97°	Leo	00:38	07:22	14:06	Naked Eye
Saturn♄	Visible Low	0.3	10.5°	264°	Pisces	16:15	22:21	04:26	Naked Eye
Mars♂	Optimal Visibility	1.0	43.4°	99°	Cancer	23:52	06:48	13:44	Naked Eye
Mercury☿	Below Horizon	0.4	-51.4°	79°	Libra	07:50	12:49	17:51	Binoculars
Uranus♅	Optimal Visibility	5.6	63.5°	243°	Taurus	18:46	01:52	08:57	Binoculars
Neptune♆	Rising / Setting	7.8	3.5°	267°	Pisces	15:50	21:51	03:52	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

RISES15:40

BEST TIME21:21S · 54° high

SETS03:38

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

JupiterNaked Eye · High in the sky

RISES00:38

BEST TIME07:22S · 69° high

SETS14:06

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

RISES16:15

BEST TIME22:21S · 56° high

SETS04:26

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

RISES06:15

BEST TIME11:23S · 37° high

SETS16:37

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

RISES23:52

BEST TIME06:48S · 72° high

SETS13:44

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.