OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

7.29°S, 37.09°WAmerica/Fortaleza

Daylight+58.2°

13:20:46

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 19m of true darkness · 11h 41m total night

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

TRUE DARK SKY WINDOW

Sunset17:22

Civil Dusk17:43

Nautical18:08

Full Dark18:33

Nadir23:12

Dark Ends03:51

Nautical04:16

Civil Dawn04:41

Sunrise05:03

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-27.3°

DISTANCE380,346 km

Moonrise15:13

Moonset02:49

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	55.5°	249°	Libra	04:56	11:06	17:16	Naked Eye
Jupiter♃	Below Horizon	-2.0	-5.4°	284°	Leo	01:06	07:04	12:58	Naked Eye
Saturn♄	Below Horizon	0.3	-39.4°	94°	Pisces	15:58	21:58	04:03	Naked Eye
Mars♂	Below Horizon	1.0	-14.0°	287°	Cancer	00:35	06:29	12:21	Naked Eye
Mercury☿	Optimal Visibility	0.4	71.7°	220°	Libra	06:17	12:30	18:43	Binoculars
Uranus♅	Below Horizon	5.6	-75.9°	349°	Taurus	19:39	01:34	07:24	Binoculars
Neptune♆	Below Horizon	7.8	-31.7°	95°	Pisces	15:27	21:29	03:34	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

RISES15:13

BEST TIME21:23N · 79° high

SETS02:49

Reaches about 79° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:06

BEST TIME07:04N · 68° high

SETS12:58

Reaches about 68° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES15:58

BEST TIME21:58N · 81° high

SETS04:03

Reaches about 81° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:56

BEST TIME11:06S · 79° high

SETS17:16

Reaches about 79° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:35

BEST TIME06:29N · 65° high

SETS12:21

Reaches about 65° 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.