OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

27.26°S, 65.36°WAmerica/Argentina/Tucuman

Daylight+42.6°

16:17:05

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 20m of true darkness · 11h 3m total night

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

TRUE DARK SKY WINDOW

Sunset19:33

Civil Dusk19:58

Nautical20:26

Full Dark20:55

Nadir01:05

Dark Ends05:15

Nautical05:44

Civil Dawn06:12

Sunrise06:37

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-12.5°

DISTANCE379,687 km

Moonrise17:14

Moonset04:47

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/Argentina/Tucuman

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Optimal Visibility	-4.3	43.5°	271°	Libra	06:19	12:59	19:38	Naked Eye
Jupiter♃	Below Horizon	-2.0	-23.9°	274°	Leo	03:21	08:56	14:28	Naked Eye
Saturn♄	Below Horizon	0.3	-21.4°	100°	Pisces	17:53	23:51	05:54	Naked Eye
Mars♂	Below Horizon	1.0	-32.9°	274°	Cancer	02:56	08:22	13:46	Naked Eye
Mercury☿	Optimal Visibility	0.4	63.3°	277°	Libra	07:36	14:23	21:10	Binoculars
Uranus♅	Below Horizon	5.6	-76.4°	115°	Taurus	22:06	03:22	08:43	Binoculars
Neptune♆	Below Horizon	7.8	-13.9°	98°	Pisces	17:19	23:21	05:28	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

RISES17:14

BEST TIME23:20N · 58° high

SETS04:47

Reaches about 58° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES03:21

BEST TIME08:56N · 48° high

SETS14:28

Reaches about 48° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES17:53

BEST TIME23:51N · 61° high

SETS05:54

Reaches about 61° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES06:19

BEST TIME12:59N · 81° high

SETS19:38

Reaches about 81° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES02:56

BEST TIME08:22N · 45° high

SETS13:46

Reaches about 45° 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.