Questions tagged [star-catalogues]
Questions regarding lists of star designations.
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questions
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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 ...
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2answers
85 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 ...
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1answer
297 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 ...
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1answer
45 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 ...
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1answer
75 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 ...
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0answers
38 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. ...
2
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1answer
31 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 ...
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1answer
132 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 ...
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2answers
51 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 ...
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2answers
68 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 ...
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1answer
67 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, ...
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1answer
58 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
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1answer
120 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 ...
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0answers
27 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... ...
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2answers
186 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 ...
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1answer
65 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 ...
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1answer
48 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?
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1answer
56 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 ...
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1answer
93 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 ...
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0answers
35 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 ...
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1answer
154 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 ...
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1answer
951 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 ...
2
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1answer
100 views
How to query a region on the sky when given only ecliptic coordinates?
I am new at using the Python packages astropy/astroquery and what I want to achieve is to use it to find stars that lay on the TESS continuous view zone (CVZ).
I ...
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1answer
183 views
Does the Sun have a numerical designation in any star catalogues?
Given the existence of large star catalogues listing millions of astronomical objects with numerical designations (such as Tabby's Star, KIC 8462852) it occurred to me that one of them might contain ...
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1answer
162 views
Which database of celestial objects do stargazing apps use?
Stargazing apps such as Star Walk must have a database with a list of celestial objects, their names and details and each of their celestial coordinates.
I am interested to know which database these ...
4
votes
1answer
102 views
Why does the number of extrasolar planets vary in different sources?
There are at least three catalogues that are counting up-to-date discovered exoplanets. What criteria do they use to count the number of planets? Every catalogue has a different count value.
So at ...
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1answer
51 views
For stars around 13th magnitude, are their entries in various catalogues usually linked, or does one do this manually?
@MikeG's speedy answer to "What star was the asteroid 2014 MU69 predicted to occult on 2018-08-04?" lists three names for one 13th magnitude star, from three catalogues; 2MASS, UCAC4, and Gaia DR2.
...
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1answer
97 views
How can I convert Bayer/Flamsteed designations to Hipparchos numbers?
In a text file I have a table of star data with Bayer/Flamsteed designations. I need to convert these into Hipparchos numbers. How can I automatically do this?
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2answers
183 views
Is there a complete edition of the Cambridge Catalogue of Radio Sources (esp. 3C) available digitally?
In radio astronomy, many common objects are refered to by their designation from the 3rd Cambridge Catalogue of Radio Sources, e.g. 3C 353.
For hobbyist purposes, I would like to create a catalogue ...
4
votes
3answers
638 views
Why nobody cares to give the nearest stars better names?
The star occupying 6th place on Wikipedia's list of nearest stars and brown dwarfs can be called either Lalande 21185, BD+36 2147, Gliese 411 or HD 95735. That seems to me like a fine, quadruple ...
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1answer
540 views
What is the star whose western traditional name is the longest?
My definition of traditional name is that name that appears in the stellar catalogs made in classical antiquity by Greeks and Romans and which were later translated and compiled by the Arabs to be ...
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1answer
875 views
Where and how to look up the coordinates and magnitude of the star in this occultation prediction?
The motivation for this question comes from this question. A star is named in the occultation prediction shown below, from AsteroidOccultations.com's News & Announcements for 2014 MU69 on ...
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1answer
55 views
Stellar Information from Hipparcos
Is it possible to derive Metallicity/Age/Radial Velocity/Rotational Velocity/Surface Gravity of a star from Hipparcos data files or are do they require individual studying?
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Duplicate entries in Tycho-2 main and supplement 1
When checking the internal consistency of the Tycho-2 catalogue, I came across 254 entries in the main catalogue file that are also present in supplement 1 (the Hipparcos/Tycho-1 stars not included in ...
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0answers
65 views
Stellar catalogues stars in specific sky regions – without downloading the catalogs
I’m interested, to give a scientific realism to a project I’m working on, in finding a picture of all stars belonging to a star catalogue such as Tycho 2 or Hipparcos for some very specific sky ...
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3answers
4k views
Milky Way position on the sky
I'm looking for some sort of boundary data to be able to render the milky way on a star map, as visible from Earth. Something that looks like this:
For that, I need something like a collection of RA ...
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0answers
54 views
Gliese Catalog Designation prefixes
In the Gliese catalog there are a bunch of prefixes, such as GJ, GI, Wo, etc. My question is do the numbers overlap ever? I tried to look it up, but nothing I could find was conclusive to me.
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1answer
6k views
Looking for star database
I am looking for a particular set of information to essentially make a star map for a game.
What I need:
All stars within 11,462 light years of Earth.
Their stellar classification.
If they have any ...
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2answers
74 views
Can't find Cassiopias Schedar or Caph in Tycho-2 catalog supplement 1
I'm trying to locate three stars inside Cassiopeia, gam cas, Schedar, and Caph. I have found gamma Cas inside the Tycho-2 catalog supp1.dat file, however when I look for Schedar or Caph I have no luck....
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1answer
667 views
Open access table of visible stars with magnitude, coordinates, and possibly color?
I'm looking for a link to a table of visible stars that is open and available to everyone. It should have magnitude, RA, dec, and possibly some indication of color. This will be used to produce ...
