OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

36.63°N, 139.05°EAsia/Tokyo

Deep Astronomical Night-51.7° (< −18°)

01:35:19

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

Sunset16:57

Civil Dusk17:24

Nautical17:54

Full Dark18:24

Nadir23:28

Dark Ends04:32

Nautical05:02

Civil Dawn05:32

Sunrise05:59

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE21.8°

DISTANCE380,291 km

Moonrise15:09

Moonset03:33

HorizonAbove

LUNAR INTERFERENCE INDEX34% · Moderate Lunar Glow

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

80/100

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	-54.9°	67°	Libra	06:12	11:18	16:30	Naked Eye
Jupiter♃	Visible Low	-2.0	11.9°	81°	Leo	00:31	07:17	14:07	Naked Eye
Saturn♄	Optimal Visibility	0.3	32.1°	245°	Pisces	16:10	22:16	04:22	Naked Eye
Mars♂	Visible Low	1.0	20.7°	83°	Cancer	23:45	06:43	13:44	Naked Eye
Mercury☿	Below Horizon	0.4	-70.8°	38°	Libra	07:48	12:44	17:44	Binoculars
Uranus♅	Optimal Visibility	5.6	74.1°	170°	Taurus	18:39	01:47	08:55	Binoculars
Neptune♆	Visible Low	7.8	25.4°	249°	Pisces	15:45	21:46	03:47	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

RISES15:09

BEST TIME21:16S · 53° high

SETS03:33

Reaches about 53° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Moderate Lunar Glow.

JupiterNaked Eye · High in the sky

RISES00:31

BEST TIME07:17S · 68° high

SETS14:07

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

RISES16:10

BEST TIME22:16S · 55° high

SETS04:22

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

RISES06:12

BEST TIME11:18S · 36° high

SETS16:30

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

RISES23:45

BEST TIME06:43S · 71° high

SETS13:44

Reaches about 71° 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.