OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

19.55°S, 47.94°WAmerica/Sao_Paulo

Daylight+71.0°

13:07:35

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 47m of true darkness · 11h 19m total night

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

TRUE DARK SKY WINDOW

Sunset18:16

Civil Dusk18:39

Nautical19:05

Full Dark19:32

Nadir23:55

Dark Ends04:19

Nautical04:46

Civil Dawn05:12

Sunrise05:35

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-39.2°

DISTANCE380,395 km

Moonrise16:00

Moonset03:35

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	71.4°	272°	Libra	05:22	11:49	18:16	Naked Eye
Jupiter♃	Rising / Setting	-2.0	4.3°	287°	Leo	02:06	07:47	13:28	Naked Eye
Saturn♄	Below Horizon	0.3	-50.2°	113°	Pisces	16:42	22:42	04:45	Naked Eye
Mars♂	Below Horizon	1.0	-4.2°	287°	Cancer	01:37	07:12	12:48	Naked Eye
Mercury☿	Optimal Visibility	0.4	87.9°	133°	Libra	06:41	13:14	19:46	Binoculars
Uranus♅	Below Horizon	5.6	-73.9°	278°	Taurus	20:42	02:17	07:47	Binoculars
Neptune♆	Below Horizon	7.8	-42.7°	110°	Pisces	16:10	22:12	04:18	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

RISES16:00

BEST TIME22:08N · 66° high

SETS03:35

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

JupiterNaked Eye · High in the sky

RISES02:06

BEST TIME07:47N · 56° high

SETS13:28

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

RISES16:42

BEST TIME22:42N · 69° high

SETS04:45

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

RISES05:22

BEST TIME11:49N · 89° high

SETS18:16

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

RISES01:37

BEST TIME07:12N · 53° high

SETS12:48

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.