OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.01°S, 46.72°WAmerica/Sao_Paulo

Daylight+66.1°

13:22:48

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 42m of true darkness · 11h 16m total night

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

TRUE DARK SKY WINDOW

Sunset18:12

Civil Dusk18:35

Nautical19:02

Full Dark19:29

Nadir23:50

Dark Ends04:12

Nautical04:39

Civil Dawn05:06

Sunrise05:29

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-34.4°

DISTANCE380,338 km

Moonrise15:55

Moonset03:30

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	66.7°	273°	Libra	05:15	11:44	18:14	Naked Eye
Jupiter♃	Below Horizon	-2.0	-0.2°	285°	Leo	02:03	07:42	13:21	Naked Eye
Saturn♄	Below Horizon	0.3	-45.2°	111°	Pisces	16:38	22:37	04:40	Naked Eye
Mars♂	Below Horizon	1.0	-9.2°	286°	Cancer	01:34	07:07	12:41	Naked Eye
Mercury☿	Optimal Visibility	0.4	86.8°	271°	Libra	06:33	13:09	19:44	Binoculars
Uranus♅	Below Horizon	5.6	-78.8°	272°	Taurus	20:40	02:12	07:40	Binoculars
Neptune♆	Below Horizon	7.8	-37.7°	108°	Pisces	16:05	22:07	04:13	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

RISES15:55

BEST TIME22:03N · 65° high

SETS03:30

Reaches about 65° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:03

BEST TIME07:42N · 55° high

SETS13:21

Reaches about 55° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:38

BEST TIME22:37N · 68° high

SETS04:40

Reaches about 68° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:15

BEST TIME11:44N · 87° high

SETS18:14

Reaches about 87° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:34

BEST TIME07:07N · 51° high

SETS12:41

Reaches about 51° 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.