OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.92°S, 44.46°WAmerica/Sao_Paulo

Daylight+59.9°

13:40:46

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 39m of true darkness · 11h 14m total night

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

TRUE DARK SKY WINDOW

Sunset18:04

Civil Dusk18:27

Nautical18:54

Full Dark19:22

Nadir23:41

Dark Ends04:01

Nautical04:29

Civil Dawn04:56

Sunrise05:19

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-28.2°

DISTANCE380,271 km

Moonrise15:46

Moonset03:21

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	60.3°	272°	Libra	05:04	11:35	18:06	Naked Eye
Jupiter♃	Below Horizon	-2.0	-6.6°	283°	Leo	01:55	07:33	13:11	Naked Eye
Saturn♄	Below Horizon	0.3	-38.9°	107°	Pisces	16:29	22:28	04:31	Naked Eye
Mars♂	Below Horizon	1.0	-15.6°	283°	Cancer	01:24	06:58	12:31	Naked Eye
Mercury☿	Optimal Visibility	0.4	80.5°	274°	Libra	06:23	13:00	19:37	Binoculars
Uranus♅	Below Horizon	5.6	-85.0°	260°	Taurus	20:33	02:03	07:29	Binoculars
Neptune♆	Below Horizon	7.8	-31.4°	105°	Pisces	15:56	21:58	04:04	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

RISES15:46

BEST TIME21:53N · 64° high

SETS03:21

Reaches about 64° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:55

BEST TIME07:33N · 54° high

SETS13:11

Reaches about 54° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:29

BEST TIME22:28N · 67° high

SETS04:31

Reaches about 67° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:04

BEST TIME11:35N · 86° high

SETS18:06

Reaches about 86° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:24

BEST TIME06:58N · 50° high

SETS12:31

Reaches about 50° 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.