OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

4.46°S, 43.89°WAmerica/Fortaleza

Daylight+43.2°

14:47:02

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 24m of true darkness · 11h 46m total night

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

TRUE DARK SKY WINDOW

Sunset17:46

Civil Dusk18:08

Nautical18:32

Full Dark18:57

Nadir23:39

Dark Ends04:21

Nautical04:46

Civil Dawn05:11

Sunrise05:32

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-13.3°

DISTANCE380,023 km

Moonrise15:41

Moonset03:17

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/Fortaleza

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Optimal Visibility	-4.3	40.7°	250°	Libra	05:26	11:33	17:40	Naked Eye
Jupiter♃	Below Horizon	-2.0	-19.2°	284°	Leo	01:30	07:31	13:28	Naked Eye
Saturn♄	Below Horizon	0.3	-24.6°	91°	Pisces	16:25	22:25	04:30	Naked Eye
Mars♂	Below Horizon	1.0	-27.3°	288°	Cancer	00:58	06:56	12:52	Naked Eye
Mercury☿	Optimal Visibility	0.4	58.7°	236°	Libra	06:49	12:57	19:06	Binoculars
Uranus♅	Below Horizon	5.6	-69.6°	34°	Taurus	20:02	01:57	07:55	Binoculars
Neptune♆	Below Horizon	7.8	-17.0°	92°	Pisces	15:54	21:56	04:01	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

RISES15:41

BEST TIME21:51N · 82° high

SETS03:17

Reaches about 82° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:30

BEST TIME07:31N · 71° high

SETS13:28

Reaches about 71° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:25

BEST TIME22:25N · 84° high

SETS04:30

Reaches about 84° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:26

BEST TIME11:33S · 76° high

SETS17:40

Reaches about 76° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:58

BEST TIME06:56N · 68° high

SETS12:52

Reaches about 68° 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.