OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

12.34°S, 39.33°WAmerica/Sao_Paulo

Daylight+63.4°

13:10:17

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 7m of true darkness · 11h 32m total night

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

TRUE DARK SKY WINDOW

Sunset17:35

Civil Dusk17:57

Nautical18:22

Full Dark18:47

Nadir23:21

Dark Ends03:54

Nautical04:20

Civil Dawn04:45

Sunrise05:07

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-31.7°

DISTANCE380,385 km

Moonrise15:23

Moonset02:59

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	61.6°	255°	Libra	04:58	11:15	17:32	Naked Eye
Jupiter♃	Below Horizon	-2.0	-2.0°	284°	Leo	01:24	07:12	13:01	Naked Eye
Saturn♄	Below Horizon	0.3	-43.5°	100°	Pisces	16:07	22:07	04:12	Naked Eye
Mars♂	Below Horizon	1.0	-10.8°	286°	Cancer	00:50	06:38	12:24	Naked Eye
Mercury☿	Optimal Visibility	0.4	78.7°	220°	Libra	06:18	12:39	19:00	Binoculars
Uranus♅	Below Horizon	5.6	-78.6°	321°	Taurus	19:56	01:43	07:25	Binoculars
Neptune♆	Below Horizon	7.8	-35.8°	100°	Pisces	15:36	21:38	03:43	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

RISES15:23

BEST TIME21:32N · 74° high

SETS02:59

Reaches about 74° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:24

BEST TIME07:12N · 63° high

SETS13:01

Reaches about 63° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:07

BEST TIME22:07N · 76° high

SETS04:12

Reaches about 76° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:58

BEST TIME11:15S · 84° high

SETS17:32

Reaches about 84° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:50

BEST TIME06:38N · 60° high

SETS12:24

Reaches about 60° 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.