OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

19.19°S, 47.50°WAmerica/Sao_Paulo

Daylight+28.7°

16:07:54

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 48m of true darkness · 11h 20m total night

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

TRUE DARK SKY WINDOW

Sunset18:14

Civil Dusk18:36

Nautical19:03

Full Dark19:30

Nadir23:54

Dark Ends04:18

Nautical04:44

Civil Dawn05:11

Sunrise05:33

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE1.6°

DISTANCE379,721 km

Moonrise15:58

Moonset04:09

HorizonAbove

LUNAR INTERFERENCE INDEX3% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

41/100

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♀	Visible Low	-4.3	28.5°	259°	Libra	05:20	11:47	18:14	Naked Eye
Jupiter♃	Below Horizon	-2.0	-37.8°	274°	Leo	02:00	07:45	13:26	Naked Eye
Saturn♄	Below Horizon	0.3	-7.8°	91°	Pisces	16:41	22:40	04:43	Naked Eye
Mars♂	Below Horizon	1.0	-46.6°	276°	Cancer	01:32	07:10	12:47	Naked Eye
Mercury☿	Optimal Visibility	0.4	48.8°	260°	Libra	06:39	13:12	19:44	Binoculars
Uranus♅	Below Horizon	5.6	-62.9°	81°	Taurus	20:40	02:11	07:46	Binoculars
Neptune♆	Below Horizon	7.8	-0.2°	91°	Pisces	16:08	22:10	04:16	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

RISES15:58

BEST TIME22:06N · 67° high

SETS04:09

Reaches about 67° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:00

BEST TIME07:45N · 56° high

SETS13:26

Reaches about 56° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:41

BEST TIME22:40N · 69° high

SETS04:43

Reaches about 69° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:20

BEST TIME11:47N · 89° high

SETS18:14

Reaches about 89° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:32

BEST TIME07:10N · 53° high

SETS12:47

Reaches about 53° 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.