IC 4868

STARDouble star

ILLUSTRATION · NO MEASURED PROPERTIES

[

OVERVIEW

] STAR

IC 4868 is a double star in the constellation Telescopium, shining at apparent magnitude 10.56 (). It is catalogued as HD 183845, IDS 19263-4606 AB and TYC 8389-736-1, among 5 designations in total.

WHAT IT IS: Double star
HOW BRIGHT (V)
WHERE TO LOOK: Telescopium

[

OBSERVING

] FROM WHERE YOU ARE

What it takes to see IC 4868 for yourself. Everything in this part of the page is worked out for a real horizon, a real night and the equipment you say you have.

TONIGHT

Say where you are, and this line says when IC 4868 is worth going out for.

VIEW IN SKY MAP

[

THROUGH AN EYEPIECE

] 150 MM TELESCOPE · 25 MM EYEPIECE

0.2′ ACROSS

Out of reach of binoculars; a 150 mm telescope reaches it. Its brightest companion sits 3.90″ away, which at 48× is cleanly split.

: 48×
: 1.08
: 1.25
: 13.0
: 3.90 · cleanly split
APPARENT MAGNITUDE (): 10.56 · within reach

A is where the pair was the year it was measured — the ones above, in 2021, and a pair in a real orbit has moved since.

FIND IT ON THE SKY MAP ↗

[

APPARENT PLACE

] EQUINOX J2026.7

Where a telescope has to be pointed today, which is not quite where the catalogue records the object: the coordinate grid itself has turned since the year 2000 the catalogue is referred to.

RIGHT ASCENSION
DECLINATION
GRID TURNED SINCE: 20.6
PROPER MOTION SINCE: none published

Computed for 2026-08-28 00:00 UT. No proper motion is published for IC 4868, so nothing here moves the object; what separates this from the catalogued position above is the coordinate grid turning under it — about fifty arcseconds a year of precession since 2000, and the small nodding of the Earth’s axis on top of that. Aberration and refraction are not included, and neither is parallax; each is under an arcminute, which is also about as well as the catalogued position is known. The same figure for any date.

[

DOUBLE STAR

] 1 PAIR

COMPONENTS	SEPARATION	POSITION ANGLE	MAGNITUDE	MEASURED
—	3.9″	18°	11.8	2021

Separation and position angle are as measured in the year given; a position angle is measured from north, through east. Washington Double Star Catalog 19336-4554.

[

CATALOG DATA

] 5 FIELDS

The raw catalogue values, as the source published them, with the error bars where one was published — sorted by what each set of figures is about rather than by the order they happened to be stored in.

HOW BRIGHT IT IS

What the light adds up to, measured through one filter at a time. A magnitude is a brightness on a backwards scale — the smaller the number, the brighter the object.

Apparent magnitude ()
Apparent magnitude ()

OTHER NAMES AND NUMBERS

The identifiers other catalogues file this object under, for anyone joining this data to theirs.

Washington Double Star id: 19336-4554
OpenNGC type code: **
Wikidata item: Q3680814

[

ALSO KNOWN AS

] 5 DESIGNATIONS

HD HD 183845
IC IC 4868
IDS IDS 19263-4606 AB
TYC TYC 8389-736-1
WDS WDS J19336-4554AB

[

LOOK IT UP ELSEWHERE

] 3 SERVICES

Each link carries the identifier printed beside it. Nothing on this page is a measurement of our own, so a number that disagrees with one of these is worth reporting — and a service that has never catalogued this object under this name will say so plainly.

SIMBADIC 4868
Cross-identifications, measured values and the reference behind each of them.
ADSobject:"IC 4868"
Papers indexed against this object rather than against the string, newest first.
VizieR5″ around 293.3892 -45.8927
Every published table with a row at this position, searched by coordinates rather than by name.

[

CITE THIS PAGE

] DR1

This page is live and its numbers move when an upstream refreshes, so the citation names the release the rows belong to rather than the day you read them. The release itself is frozen, republished as a bundle, and is what a data-availability statement should point at.

PLAIN TEXT

SpaceCatalog. IC 4868 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-4868

BIBTEX

@misc{spacecatalog_ic-4868,
  author       = {{SpaceCatalog}},
  title        = {{IC 4868}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ic-4868},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from OpenNGC.}
}

The values above were taken from OpenNGC — CC-BY-SA-4.0. Citing this page does not replace citing that catalogue, and its licence is share-alike: the terms reach whatever you build from these rows.

[