OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

4.62°S, 38.93°WAmerica/Fortaleza

Daylight+51.4°

13:53:27

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 24m of true darkness · 11h 45m total night

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

TRUE DARK SKY WINDOW

Sunset17:27

Civil Dusk17:48

Nautical18:13

Full Dark18:37

Nadir23:19

Dark Ends04:02

Nautical04:26

Civil Dawn04:51

Sunrise05:12

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-21.3°

DISTANCE380,223 km

Moonrise15:20

Moonset02:57

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	48.6°	248°	Libra	05:06	11:13	17:20	Naked Eye
Jupiter♃	Below Horizon	-2.0	-11.0°	284°	Leo	01:11	07:11	13:08	Naked Eye
Saturn♄	Below Horizon	0.3	-33.1°	91°	Pisces	16:05	22:06	04:11	Naked Eye
Mars♂	Below Horizon	1.0	-19.3°	287°	Cancer	00:38	06:36	12:32	Naked Eye
Mercury☿	Optimal Visibility	0.4	65.5°	227°	Libra	06:29	12:38	18:46	Binoculars
Uranus♅	Below Horizon	5.6	-73.2°	11°	Taurus	19:43	01:37	07:35	Binoculars
Neptune♆	Below Horizon	7.8	-25.5°	93°	Pisces	15:35	21:36	03:41	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

RISES15:20

BEST TIME21:30N · 82° high

SETS02:57

Reaches about 82° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:11

BEST TIME07:11N · 71° high

SETS13:08

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

RISES16:05

BEST TIME22:06N · 84° high

SETS04:11

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

RISES05:06

BEST TIME11:13S · 77° high

SETS17:20

Reaches about 77° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:38

BEST TIME06:36N · 67° high

SETS12:32

Reaches about 67° 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.