OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

3.96°S, 69.60°WAmerica/Sao_Paulo

Daylight+81.1°

13:03:57

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 25m of true darkness · 11h 47m total night

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

TRUE DARK SKY WINDOW

Sunset19:29

Civil Dusk19:50

Nautical20:15

Full Dark20:39

Nadir01:22

Dark Ends06:05

Nautical06:30

Civil Dawn06:54

Sunrise07:15

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE-63.7°

DISTANCE380,409 km

Moonrise17:27

Moonset05:03

HorizonBelow

LUNAR INTERFERENCE INDEX0% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

42/100

Fair Stargazing

Partial haze or lunar wash. Bright clusters, double stars, and prominent planets remain well visible.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to America/Sao_Paulo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Optimal Visibility	-4.3	75.6°	168°	Libra	07:09	13:15	19:21	Naked Eye
Jupiter♃	Visible Low	-2.0	30.0°	289°	Leo	03:16	09:13	15:11	Naked Eye
Saturn♄	Below Horizon	0.3	-76.3°	100°	Pisces	18:07	00:08	06:13	Naked Eye
Mars♂	Visible Low	1.0	21.2°	291°	Cancer	02:42	08:39	14:36	Naked Eye
Mercury☿	Optimal Visibility	0.4	61.0°	128°	Libra	08:32	14:40	20:48	Binoculars
Uranus♅	Below Horizon	5.6	-47.7°	297°	Taurus	21:44	03:43	09:39	Binoculars
Neptune♆	Below Horizon	7.8	-68.6°	101°	Pisces	17:37	23:38	05:44	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

RISES17:27

BEST TIME23:37N · 82° high

SETS05:03

Reaches about 82° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES03:16

BEST TIME09:13N · 72° high

SETS15:11

Reaches about 72° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES18:07

BEST TIME00:08N · 85° high

SETS06:13

Reaches about 85° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES07:09

BEST TIME13:15S · 76° high

SETS19:21

Reaches about 76° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES02:42

BEST TIME08:39N · 68° high

SETS14:36

Reaches about 68° 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.