OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

16.46°S, 51.16°WAmerica/Sao_Paulo

Daylight+34.8°

15:56:27

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 56m of true darkness · 11h 25m total night

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

TRUE DARK SKY WINDOW

Sunset18:26

Civil Dusk18:48

Nautical19:14

Full Dark19:40

Nadir00:08

Dark Ends04:36

Nautical05:03

Civil Dawn05:29

Sunrise05:51

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE-4.1°

DISTANCE379,764 km

Moonrise16:13

Moonset04:25

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	34.1°	259°	Libra	05:39	12:02	18:25	Naked Eye
Jupiter♃	Below Horizon	-2.0	-31.3°	277°	Leo	02:12	08:00	13:44	Naked Eye
Saturn♄	Below Horizon	0.3	-14.2°	93°	Pisces	16:55	22:54	04:58	Naked Eye
Mars♂	Below Horizon	1.0	-40.0°	280°	Cancer	01:43	07:25	13:05	Naked Eye
Mercury☿	Optimal Visibility	0.4	54.3°	257°	Libra	06:59	13:26	19:54	Binoculars
Uranus♅	Below Horizon	5.6	-68.4°	74°	Taurus	20:50	02:26	08:05	Binoculars
Neptune♆	Below Horizon	7.8	-6.5°	93°	Pisces	16:23	22:25	04:31	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

RISES16:13

BEST TIME22:21N · 69° high

SETS04:25

Reaches about 69° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:12

BEST TIME08:00N · 59° high

SETS13:44

Reaches about 59° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:55

BEST TIME22:54N · 72° high

SETS04:58

Reaches about 72° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:39

BEST TIME12:02S · 88° high

SETS18:25

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

RISES01:43

BEST TIME07:25N · 56° high

SETS13:05

Reaches about 56° 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.