PGC 4010431
ILLUSTRATION · NO MEASURED PROPERTIES
OVERVIEW
] GALAXYPGC 4010431 is a galaxy in the constellation Leo Minor, 281.5 from Earth, shining at apparent magnitude 18.09 (). It is catalogued as SDSSJ 095951.42+383912 and WISExSCOS J095951.25+383909.4.
- WHAT IT IS
- Galaxy
- HOW FAR
- 281.5
- HOW BRIGHT (B)
The light arriving now left it that long ago.
Faint: it takes a large telescope.
OBSERVING
] FROM WHERE YOU AREWhat it takes to see PGC 4010431 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.
Say where you are, and this line says when PGC 4010431 is worth going out for.
THROUGH AN EYEPIECE
] 150 MM TELESCOPE · 25 MM EYEPIECEFainter than the largest telescope modelled here reaches. No angular size is published for PGC 4010431, so whether it would fill the field is not a question this page can answer — only whether anything here is deep enough to find it.
- 48×
- 1.08
- 1.25
- 13.0
- APPARENT MAGNITUDE ()
- 18.09 · too faint for this
APPARENT PLACE
] EQUINOX J2026.7Where 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
- 20.5
- PROPER MOTION SINCE
- none published
Computed for 2026-08-27 00:00 UT. No proper motion is published for PGC 4010431, 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.
SPECTRUM
] ITS OWN LIGHTA glowing cloud is gas thin enough to see straight through, lit from inside by the stars in it. There is nothing behind the gas for it to absorb, so instead of gaps it gives bright spikes — one for each kind of atom, at exactly the colour that atom gives out.
Point at a labelled line — or an element above — to see which atom makes it and where it falls.
- SHIFTED Every line above sits 2.2% redder than the wavelength its atom emits at, because PGC 4010431 is receding. The pattern survives it — the whole barcode slides together, which is how the shift is measured in the first place.
SDSS DR18 optical spectra · spec-1277-52765-0036 · observed 2003-05-06. SDSS fibre, 3 arcseconds across. Resolving power R = 1,500 to 2,500; 3,839 reduced pixels rebinned onto 1,023 log-spaced display points and normalised to the median flux. Brightness is scaled to this spectrum’s own middle value, so the shape is the measurement and the height is not. The 3 lines named above are the ones that stand clear of the scatter and of the features around them; a spectrum at this sampling holds many more that it cannot separate. The samples themselves, as JSON, CSV or VOTable.
CATALOG DATA
] 4 FIELDSThe 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.
WHAT KIND OF THING IT IS
What the object is in itself, rather than how it happens to look from here.
- Stellar mass
- 3.74×10⁸ ±1.9×10⁸
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 ()
WHERE IT IS AND HOW IT MOVES
Position, motion across the sky and the size it covers on it. These are measurements of the object as seen from here, so every one of them depends on where here is.
- Redshift (z)
- Redshift (z, CMB frame)
ALSO KNOWN AS
] 3 DESIGNATIONS- PGC PGC 4010431
- SDSSJ SDSSJ 095951.42+383912
- WISExSCOS WISExSCOS J095951.25+383909.4
LOOK IT UP ELSEWHERE
] 3 SERVICESEach 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.
- SIMBADPGC 4010431
Cross-identifications, measured values and the reference behind each of them.
- ADSobject:"PGC 4010431"
Papers indexed against this object rather than against the string, newest first.
- VizieR5″ around 149.9640 +38.6533
Every published table with a row at this position, searched by coordinates rather than by name.
CITE THIS PAGE
] DR1This 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.
SpaceCatalog. PGC 4010431 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/pgc-4010431
@misc{spacecatalog_pgc-4010431,
author = {{SpaceCatalog}},
title = {{PGC 4010431}},
howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
year = {2026},
url = {https://spacecatalog.org/object/pgc-4010431},
note = {Catalogue entry, data release DR1 (2026-08-21). Values from GLADE+ (Galaxy List for the Advanced Detector Era).}
}The values above were taken from GLADE+ (Galaxy List for the Advanced Detector Era) — VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D). Citing this page does not replace citing that catalogue.