OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

7.75°S, 43.80°WAmerica/Sao_Paulo

Daylight+41.0°

14:57:58

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 18m of true darkness · 11h 40m total night

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

TRUE DARK SKY WINDOW

Sunset17:49

Civil Dusk18:10

Nautical18:35

Full Dark19:00

Nadir23:39

Dark Ends04:18

Nautical04:43

Civil Dawn05:08

Sunrise05:29

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-10.6°

DISTANCE379,982 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/Sao_Paulo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Optimal Visibility	-4.3	39.0°	253°	Libra	05:22	11:33	17:44	Naked Eye
Jupiter♃	Below Horizon	-2.0	-22.7°	282°	Leo	01:33	07:30	13:24	Naked Eye
Saturn♄	Below Horizon	0.3	-21.7°	92°	Pisces	16:25	22:25	04:30	Naked Eye
Mars♂	Below Horizon	1.0	-31.0°	286°	Cancer	01:02	06:56	12:48	Naked Eye
Mercury☿	Optimal Visibility	0.4	58.0°	242°	Libra	06:43	12:57	19:10	Binoculars
Uranus♅	Below Horizon	5.6	-70.4°	46°	Taurus	20:07	01:56	07:50	Binoculars
Neptune♆	Below Horizon	7.8	-14.0°	92°	Pisces	15:54	21:55	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 · 78° high

SETS03:17

Reaches about 78° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:33

BEST TIME07:30N · 68° high

SETS13:24

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

RISES16:25

BEST TIME22:25N · 81° high

SETS04:30

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

RISES05:22

BEST TIME11:33S · 80° high

SETS17:44

Reaches about 80° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:02

BEST TIME06:56N · 64° high

SETS12:48

Reaches about 64° 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.