OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

36.37°N, 138.13°EAsia/Tokyo

Deep Astronomical Night-54.2° (< −18°)

01:24:45

Sat, Oct 24, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 8m of true darkness · 13h 1m total night

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

TRUE DARK SKY WINDOW

Sunset17:01

Civil Dusk17:27

Nautical17:58

Full Dark18:27

Nadir23:32

Dark Ends04:36

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

ILLUMINATION92%

ALTITUDE24.5°

DISTANCE380,331 km

Moonrise15:13

Moonset03:37

HorizonAbove

LUNAR INTERFERENCE INDEX38% · Moderate Lunar Glow

Milky Way contrast is softened. Bright open clusters and double stars are optimal.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

78/100

Good Stargazing

Fine observing conditions. Open star clusters and nebulae will exhibit crisp structure.

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	-57.6°	63°	Libra	06:15	11:22	16:34	Naked Eye
Jupiter♃	Rising / Setting	-2.0	9.1°	79°	Leo	00:35	07:21	14:10	Naked Eye
Saturn♄	Optimal Visibility	0.3	34.8°	242°	Pisces	16:14	22:20	04:25	Naked Eye
Mars♂	Visible Low	1.0	17.8°	80°	Cancer	23:49	06:47	13:47	Naked Eye
Mercury☿	Below Horizon	0.4	-72.7°	29°	Libra	07:51	12:47	17:48	Binoculars
Uranus♅	Optimal Visibility	5.6	73.6°	158°	Taurus	18:43	01:51	08:58	Binoculars
Neptune♆	Visible Low	7.8	28.2°	246°	Pisces	15:49	21:50	03:50	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

RISES15:13

BEST TIME21:20S · 54° high

SETS03:37

Reaches about 54° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Moderate Lunar Glow.

JupiterNaked Eye · High in the sky

RISES00:35

BEST TIME07:21S · 68° high

SETS14:10

Reaches about 68° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:14

BEST TIME22:20S · 55° high

SETS04:25

Reaches about 55° 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 TIME11:22S · 36° high

SETS16:34

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

RISES23:49

BEST TIME06:47S · 72° high

SETS13:47

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.