OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

19.93°S, 41.45°WAmerica/Sao_Paulo

Daylight+48.9°

14:17:53

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 46m of true darkness · 11h 18m total night

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

TRUE DARK SKY WINDOW

Sunset17:50

Civil Dusk18:13

Nautical18:40

Full Dark19:06

Nadir23:29

Dark Ends03:52

Nautical04:19

Civil Dawn04:46

Sunrise05:09

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-17.4°

DISTANCE380,132 km

Moonrise15:33

Moonset03:08

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	48.8°	265°	Libra	04:55	11:23	17:51	Naked Eye
Jupiter♃	Below Horizon	-2.0	-17.6°	279°	Leo	01:37	07:21	13:01	Naked Eye
Saturn♄	Below Horizon	0.3	-28.1°	100°	Pisces	16:16	22:16	04:19	Naked Eye
Mars♂	Below Horizon	1.0	-26.5°	281°	Cancer	01:09	06:46	12:22	Naked Eye
Mercury☿	Optimal Visibility	0.4	68.9°	263°	Libra	06:14	12:48	19:21	Binoculars
Uranus♅	Below Horizon	5.6	-83.2°	80°	Taurus	20:17	01:47	07:21	Binoculars
Neptune♆	Below Horizon	7.8	-20.4°	98°	Pisces	15:44	21:46	03:52	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

RISES15:33

BEST TIME21:41N · 66° high

SETS03:08

Reaches about 66° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:37

BEST TIME07:21N · 56° high

SETS13:01

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

RISES16:16

BEST TIME22:16N · 69° high

SETS04:19

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

RISES04:55

BEST TIME11:23N · 88° high

SETS17:51

Reaches about 88° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:09

BEST TIME06:46N · 52° high

SETS12:22

Reaches about 52° 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.