OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

4.29°S, 44.79°WAmerica/Fortaleza

Daylight+21.6°

16:18:44

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 25m of true darkness · 11h 46m total night

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

TRUE DARK SKY WINDOW

Sunset17:50

Civil Dusk18:11

Nautical18:36

Full Dark19:00

Nadir23:43

Dark Ends04:25

Nautical04:50

Civil Dawn05:15

Sunrise05:36

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE7.4°

DISTANCE379,680 km

Moonrise15:44

Moonset04:04

HorizonAbove

LUNAR INTERFERENCE INDEX12% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

38/100

Challenging Stargazing

High cloud cover or severe light interference. Recommend bright planetary observation or indoor planning.

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♀	Visible Low	-4.3	19.7°	252°	Libra	05:30	11:37	17:43	Naked Eye
Jupiter♃	Below Horizon	-2.0	-40.7°	285°	Leo	01:34	07:34	13:31	Naked Eye
Saturn♄	Below Horizon	0.3	-2.4°	89°	Pisces	16:28	22:29	04:34	Naked Eye
Mars♂	Below Horizon	1.0	-48.1°	292°	Cancer	01:01	07:00	12:56	Naked Eye
Mercury☿	Optimal Visibility	0.4	39.2°	246°	Libra	06:53	13:01	19:09	Binoculars
Uranus♅	Below Horizon	5.6	-52.7°	60°	Taurus	20:05	02:00	07:59	Binoculars
Neptune♆	Rising / Setting	7.8	4.7°	90°	Pisces	15:58	21:59	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

RISES15:44

BEST TIME21:55N · 82° high

SETS04:04

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

JupiterNaked Eye · High in the sky

RISES01:34

BEST TIME07:34N · 71° high

SETS13:31

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

RISES16:28

BEST TIME22:29N · 84° high

SETS04:34

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

RISES05:30

BEST TIME11:37S · 76° high

SETS17:43

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

RISES01:01

BEST TIME07:00N · 68° high

SETS12:56

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.