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Questions tagged [star-catalogues]

Questions regarding lists of star designations.

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Trying to use SQL to query SDSS

I'm trying to use the SQL search at https://skyserver.sdss.org/dr18/SearchTools/sql to find (for example) QSOs with accurate redshifts from the SDSS. My query will look something like this: ...
Jim421616's user avatar
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Calculate Luminosity of a star from the Hipparcos catalogue

Is it possible to calculate the star's luminosity based on the data in the Hipparcos catalogue? Currently I'm using this algorithm, I have even fitted the bolometric correction to the Johnson V band (...
someCO_OLguy's user avatar
1 vote
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57 views

Filtered Gaia DR3 datasets

I'm a programmer who'd like to process some of the smaller Gaia DR3 datasets. I ultimately want to use the Gaia Sky 15M default dataset, but decided to start with a smaller 1.9M dataset as a prototype....
aggregate1166877's user avatar
3 votes
1 answer
133 views

Detailed online catalog of astronomical objects?

Is there a detailed online catalog of all the most important astronomical objects (stars, planets, constellations, galaxies etc.) with condensed data and photos? Something like this, which is taken ...
Ouroboros's user avatar
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2 votes
2 answers
255 views

How can I know the names of the stars in the Hipparcos Catalogue?

Yes, I know that not all the stars in the Hipparcos catalogue has a name. I have found that, the following catalogue has some stars' names: (HR) Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, ...
VansFannel's user avatar
5 votes
1 answer
113 views

Are more stars or more galaxies cataloged, currently, and how has the ratio evolved over time?

I recall that there are of order 100 billion stars in a galaxy and 100 billion galaxies in the (observable) universe, or something roughly like that. Since we are IN a galaxy we have an opportunity to ...
uhoh's user avatar
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1 vote
1 answer
346 views

Where can I download the Hippacos Catalogue main file and Bright Star Catalogue?

I'm developing a software that uses the Hipparcos catalogue. Specifically, I have downloaded this version: ...
VansFannel's user avatar
3 votes
1 answer
92 views

How can we make sure that it is physically the same source when we do cross matching?

When we go through multiple astronomy catalogs, we often do Cross-matching. We compare the position parameters $(\alpha, \delta)$ of different sources (galaxies, quasars, etc.) in the equatorial ...
Chang's user avatar
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1 vote
1 answer
97 views

Which catalogue has identified objects from Gaia DR3?

I am trying to match objects from a Gaia DR3 dataset having 1 million rows with simbad. I find it difficult to find object type for all the rows as queries using astroquery becomes insanely slow after ...
VADeR's user avatar
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4 votes
0 answers
73 views

Deepest known objects in the vicinity of Capella (or, generally, any specified object)

There must be a way to do this, but I don’t know where to start. Given a star (or other object, or a RA and dec), and a radius, what are the (say) 10 known deepest sky objects in this area, ordered ...
Bruce Simonson's user avatar
15 votes
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What 1° x 1° region is the optically darkest patch in the sky?

What 1° x 1° region of the night sky has the lowest flux of light? (considering the typical visual/luminance filter range, approximations using other filters/bands are acceptable, but should be in the ...
2080's user avatar
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3 votes
1 answer
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How do cross-matching algorithms deal with unequal-sized catalogues?

Let's say I'm using a service like TOPCAT or Vizier's cross-matching service and I'm trying to match the RA and dec of the sources in Catalogue 1, with 100,000 sources, to those in Catalogue 2, with a ...
Jim421616's user avatar
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2 votes
1 answer
127 views

Fitting isochrone on color magnitude diagram obtained from growth india telescope for M67

I was doing a project where I had to cross-match Panstarrs1 data (I took green data from there), with growth India telescope data (it is providing data red band) for NGC2682(Messier 67). After gaining ...
Nobody recognizeable's user avatar
2 votes
1 answer
138 views

Why does the same file differ so much in size between FITS / CSV / ECSV formats?

Maybe this is obvious for some people but I'm a newbie when it comes to working with astronomical data. I have the same catalogue in different formats and am a bit surprised as to how sizes change. ...
idiot_who_wont_quit's user avatar
1 vote
0 answers
105 views

Simbad, NED databases surface magnitude data?

I can't seem to find data about surface magnitude of galaxies in Simbad. I can easily find the apparent and absolute magnitude ... Should I just try to compute the surface magnitude, given the ...
Adrian's user avatar
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2 votes
1 answer
195 views

Is there a centralized database of all stars?

Is there a centralized database for all stars, sourced from Gaia and other missions?
azmath's user avatar
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1 answer
104 views

Mass of secondary normalized to 1 au

What does Mass of secondary normalized to 1 au in this catalogue https://vizier.cfa.harvard.edu/viz-bin/VizieR?-source=J/A+A/623/A72 mean, please? I tried to multiply that by Jupyter mass and the ...
Anna-Kat's user avatar
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2 votes
1 answer
60 views

Strange spectral types in star catalogs

I'm collecting different star catalogs I've found in the Internet to make my own and I noticed some "strange" peculiarity in how those catalogs describe spectral type of a star. Namely: ...
Felix.leg's user avatar
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1 vote
0 answers
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Which parameters of stars could show they about to undergo a supernova explosion?

I need to seek stars in our galaxy about to undergo a SN from catalogues. I can find stars in our galaxy by setting parallax to a certain value. However, I don't know how to find a parameter which ...
Aegean's user avatar
  • 109
6 votes
1 answer
147 views

What are the main ways that pulsar "glitches" are noticed and documented? Do they have to be caught in the act of glitching to be catalogued?

This answer to Is there any well-populated list or database of pulsar "glitches"? mentions two large databases; (Jodrell Bank and ATNF's pulsar catalog) but neither question nor answer ...
uhoh's user avatar
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2 votes
1 answer
449 views

How do I intelligently revise the Yale Bright Star Catalog?

The Yale Bright Star Catalog was last revised in 1991. I'm thinking about making my own revision. How would you do that? What kind of pitfalls should I avoid? I'm especially interested in having ...
John's user avatar
  • 355
1 vote
2 answers
77 views

What are the applications of cross matching astronomical catalogues?

Why do we cross match astronomical catalogues at different wavelengths? What information can we determine from combining the information from two catalogues? One of the applications I read was ...
user avatar
8 votes
3 answers
3k views

How is the star 'Spica' pronounced?

Pronunciation seems to vary depending on the source, usually either SPY-kuh or SPEE-kuh. Which is correct?
lucas's user avatar
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2 votes
2 answers
830 views

Downloadable GCNS (Gaia Catalog of Nearby Stars)

Has Gaia made the "Gaia Catalog of Nearby Stars" (GCNS) available for offline processing? Ideally I'd like the full 100pc data set in a format that doesn't require any specialized libraries ...
BCS's user avatar
  • 253
2 votes
2 answers
209 views

By type, how far out do we have good star maps?

First off, these questions asked by others seem related, but each asks a slightly different question and neither have very good answers: How well have we mapped our local neighborhood of stars? ...
BCS's user avatar
  • 253
0 votes
1 answer
74 views

What is the 'AT' astronomical catalogue? And the 'TXS' one? As in AT2019dsg and AT2019fdr?

I cannot find a site stating what the AT or TXS star/astronomy catalogues are, even though some AT and TXS 'events' have been in the news lately....
Kurt Hikes's user avatar
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1 vote
0 answers
87 views

Star Catalog with radius, luminosity, and spectra class?

I am looking for a star catalog (hopefully a .csv file) that contains radius, luminosity, and spectra class data for 1000+ stars. I have checked catalogs like the HIP, HD, and GAIA catalogs. I have ...
Anti-Thorium's user avatar
0 votes
2 answers
54 views

Semimajor axes data from Kepler Eclipsing Binary Catalog

I have been searching for a massive binary (>7 M$_{\odot}$) catalog with semimajor axes given, but I wasn't able to find any, and I began to search for a binary star catalog and decided to filter ...
AstroTeen's user avatar
  • 149
1 vote
0 answers
41 views

Filtering local region in SIMBAD

I am completely new to astrophysics and currently writing a paper on Cepheid variables for high school physics. I would like to filter out all Cepheid variables in the local system which I would ...
Matthias G.'s user avatar
1 vote
2 answers
94 views

Why is magnitude of Beta Lyrae given as 30.0 in Henry Draper catalog?

Beta Lyrae (HD 174638) is ascribed visual magnitude 30.0 in the Henry Draper catalog. There are hundreds of other stars in the catalog also given magnitude 30.0. What was meant by these nominal ...
Ags1's user avatar
  • 394
4 votes
1 answer
358 views

How can I validate star names and designations?

While most star names and alphanumeric designations I've seen appear to be pure alphanumeric plus space, I have seen designations with both - and ...
Mark Booth's user avatar
3 votes
1 answer
102 views

Star Map Vs Star Catalogue vs Planetarium Software

What is the difference between a star map, star catalogue and the sky provided by planetarium software? I have read the wiki but was having a hard time understanding how the data, accuracy and detail ...
RBz's user avatar
  • 131
1 vote
1 answer
100 views

In how far is Hipparcos data still being used?

I remember being excited when ESA launched Hipparcos in 1989 and was in operation until 15 August, 1993. Later, Gaia came into operation in 2013. Reading What is the overlap between the Gaia and the ...
B--rian's user avatar
  • 5,616
2 votes
0 answers
242 views

Cross-matching astronomical catalogs

A project I'm working on involves getting data from SDSS DR12, and cross-matching it with NED, as described in Section 2 of this paper: 2.1 The sample From the SDSS Data Release 12 (DR12, Alam et al. ...
Jim421616's user avatar
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2 votes
2 answers
206 views

SIMBAD TAP queries seem to indicate there are no distance measurements for a great many nearby stars, including Alpha Centauri or Barnard's Star

I'm attempting to create a map of all objects within 50LY, including main-sequence stars, binaries, planemos, etc. As such, I'm trying to do it all from first principles, building a micro-ETL to ...
user25153's user avatar
  • 221
6 votes
1 answer
189 views

Can it be assumed that every star in an amateur astrophotograph has been cataloged?

While I was looking at a wide-angle photograph of the Milky Way I wondered: Is it possible that some of the stars in the image have yet to be identified and/or cataloged? My answer to this is no, but ...
Jim's user avatar
  • 63
1 vote
2 answers
178 views

Eta Cassiopeiae star type; G0V? F9V? Both?

For a story I am looking into the star system of Eta Cassiopeiae, which is a binary with a main sequence star called Achird (very similar to the sun) and a K7V star. The issue I am running into is the ...
Markitect's user avatar
  • 305
2 votes
2 answers
101 views

Why does the Simbad page "A.A. Michelson's Jovian Galilean-satellite interferometer" show data for Betelgeuse?

When searching for things related to How did Michelson measure the diameters of jupiter's moons using optical interferometry? I came across the ui.adsabs.harvard.edu entry A. A. Michelson's Jovian ...
uhoh's user avatar
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1 vote
1 answer
93 views

Accurate catalogue of the Stars according to Hemisphere

I am in the need for an accurate catalogue of the stars in the Hemisphere I am currently in (or the one that I chose) and their positions at any time of the year. The more accurate the catalogue is, ...
Infinity Milestone's user avatar
1 vote
1 answer
100 views

Star designation

There are several designations for most of the stars (left column in the picture). What is the name of designation for names like Alnilam, Sirius, Alhara ... How to call these names? Thanks
Elena Greg's user avatar
0 votes
1 answer
275 views

Is there a website out there where I can find/compare data on stellar parameters for the brightest stars?

I'm looking for some kind of catalog/repository which lists stellar parameters (e.g. mass, radius, temperature) in a similar vein to NASA's Exoplanet Catalog (but except for stars), for the brightest ...
Will's user avatar
  • 31
3 votes
0 answers
103 views

Understanding WISE acronyms

I've enoucntered many acronyms related between them, like AllWISE, WISE, NEOWISE, CatWISE, WISEA, WISEAR, WISEAF, WISEU, WISEP, WISEPA, WISEPC, WISEF, WISEPF, WISER, WISEWF, WISET, WISETF, WISENF... ...
Swike's user avatar
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6 votes
2 answers
5k views

How can I calculate the uncertainties in magnitude like the CDS does?

When you check an entry of the Gaia DR2 stellar catalogue in Vizier, for example this one, you can see that there is a value for the G magnitude (in our case 18.0733 mag) and a value for the ...
Swike's user avatar
  • 3,926
4 votes
1 answer
117 views

Catalogs for type K stars and their planetary systems?

I am doing data collection on all type K stars, and their planetary system so I may develop an algorithm for a planetary formation simulation with the Unity game engine. Where could such a catalog of ...
Mr. Anderson's user avatar
0 votes
1 answer
89 views

What does G/IG signify in the galaxy names ESO 012- G 014 and ESO 293-IG 034?

The NASA/IPAC EXTRAGALACTIC DATABASE (NED) lists galaxies from the European Southern Observatory (ESO) catalog as G (ESO 012- G 014) or IG (ESO 293-IG 034). What does G/IG signify?
Ritesh Singh's user avatar
2 votes
1 answer
143 views

Are there any good DSO API's for python out there?

I was wondering if there was good DSO database API out there for python so I could fetch things like a distance away from Earth or radius etc. I tried looking however couldn't find the exact thing I ...
MIEPIC's user avatar
  • 21
1 vote
1 answer
193 views

How is the distance of a star from Earth calculated in the HYG star database

The HYG star database can be found here From the hygdata_v3.csv file, how are the cartesian (x,y,z) coordinates calculated? (Is there a mathematical formula for this?) And in the dso.csv file, there ...
SidS's user avatar
  • 225
1 vote
0 answers
70 views

What are Stokes parameters for galaxy shapes, how do they compare to Stokes parameters in optics?

I remember Stokes parameters as a way to completely define the polarization state of a well-defined beam of light. However several questions here refer to Stokes parameters used in characterizing the ...
uhoh's user avatar
  • 30.7k
5 votes
1 answer
181 views

Who discovered Wolf 359?

I always assumed that Wolf 359's discoverer had been Max Wolf, but I just found out that he simply measured its high proper movement and included it in his star catalog. Since Wolf 359 is a very ...
Ginasius's user avatar
  • 241
6 votes
2 answers
8k views

Difference between J2000, FK5 and ICRS coordinate systems? Which one does the Yale Bright Star Catalog use?

I have no background in astronomy. I have been wanting to write code to make star charts for a given location and time, which led to this question. I figured out that I would need to convert the ...
Aayush Mahajan's user avatar