OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

17.32°S, 39.23°WAmerica/Sao_Paulo

Daylight+51.7°

13:57:59

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 54m of true darkness · 11h 23m total night

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

TRUE DARK SKY WINDOW

Sunset17:39

Civil Dusk18:01

Nautical18:27

Full Dark18:54

Nadir23:21

Dark Ends03:47

Nautical04:14

Civil Dawn04:40

Sunrise05:02

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-20.1°

DISTANCE380,206 km

Moonrise15:24

Moonset02:59

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	51.1°	263°	Libra	04:50	11:15	17:39	Naked Eye
Jupiter♃	Below Horizon	-2.0	-14.5°	281°	Leo	01:25	07:12	12:55	Naked Eye
Saturn♄	Below Horizon	0.3	-31.1°	99°	Pisces	16:07	22:07	04:11	Naked Eye
Mars♂	Below Horizon	1.0	-23.4°	282°	Cancer	00:57	06:37	12:16	Naked Eye
Mercury☿	Optimal Visibility	0.4	71.0°	256°	Libra	06:10	12:39	19:08	Binoculars
Uranus♅	Below Horizon	5.6	-84.5°	48°	Taurus	20:04	01:38	07:16	Binoculars
Neptune♆	Below Horizon	7.8	-23.4°	98°	Pisces	15:35	21:37	03:43	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

RISES15:24

BEST TIME21:32N · 69° high

SETS02:59

Reaches about 69° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:25

BEST TIME07:12N · 58° high

SETS12:55

Reaches about 58° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:07

BEST TIME22:07N · 71° high

SETS04:11

Reaches about 71° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:50

BEST TIME11:15S · 89° high

SETS17:39

Reaches about 89° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:57

BEST TIME06:37N · 55° high

SETS12:16

Reaches about 55° 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.