Astronomy: Astronomical objects Start‑class High‑importance

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Guide Star Catalog

I suspect this topic should mention the Hubble Guide Star Catalog, but I don't know enough about it to place it correctly. JTN 17:13, 2004 Sep 13 (UTC)

Done! Aldebaran66 (talk) 20:58, 14 September 2009 (UTC)[reply]

SO

Teegarden's star is designated SO025300.5+165258. Which catalog is called "SO"? Icek 12:51, 29 December 2006 (UTC)[reply]

Bet you find this Interesting?

I had a thought the other day. And tried to find this answer to this on Wikipedia and other sources. But as a complete layman became very confused, parsecs/light years ect. This is my thought, we (the human race) have been sending out RF signals of a reasonable strength since 1922, please correct me on this if I have this wrong. Based on this knowledge, I wondered how far and how many star like suns (G class stars) have these RF signals reached by this year, 2007 ? You know where I'm going with this thought, and yes maybe life is not restricted to G class stars, or maybe it is, or maybe only to G2V, and we all known G2V's are capable! Then there's the age of these stars, and then the metallic make up as well. I wish someone with the right knowledge would draw up a list of theses stars. And using the above knowledge. We could then break the list up into the most lightly to the most unlikely places that intelligent life may exist. And that have also received RF signals from us. I believe this list would be helpful to SETI, to reduce their listing down to size, so they can focus on a more broader range of RF signals. As I also believe the RF's they are searching are far too narrow, and I feel a lot of time and money is going to waist at SETI. If anyone can help me with this please do, maybe I've got this wrong as I'm just a layman. But in any case, post me something, its bugging me! -- 86.10.204.128

The Nearby Stars Database finds 191 G-type stars within 25 parsecs. That's about a parsec less than you want, but it's a start. --Zundark 09:50, 21 March 2007 (UTC)[reply]

More catalogs

New catalogs of importance are Sloan, Carlsberg, 2Mass, UCAC, etc. In fact, a very good place to get a more comprehensive list of recent catalogs is http://ad.usno.navy.mil/star/star_cats_rec.shtml. Observatory 23:46, 3 August 2007 (UTC)[reply]

Number of stars in each catalog??

This isn't my thing but I thought I would be able to find the largest catalog by checking this article and it seems odd to me that this piece of information is missing, Shouldn't it be easy to find at a glance here how many stars each catalogue actually catalogues?? GabrielVelasquez (talk) 23:23, 25 June 2008 (UTC)[reply]

"The USNO-B1.0 contains entries for 1,042,618,261 stars/galaxies" - found this at the link above (or here) and this is a good example of what I mean, for each catalogue. User:GabrielVelasquez|GabrielVelasquez]] (talk) 23:28, 25 June 2008 (UTC)[reply]

Astronomical catalog and Star catalogue

Can any one please tell me the difference between an Astronomical catalog and a Star catalogue? I found that most of Star catalogue includes astronomical objects other than stars also. I am confused with these terms.

Is Astronomical catalog is the best term to denote all the types of calatolgues in astronomy? Usage of the term star catalogue might have got historical reasons! --Shijualex (talk) 13:21, 18 October 2008 (UTC)[reply]

Image Caption

The first image in the article has caption: "An illustration ... by the German astronomer Johannes Hevelius in 1690". But the page about Hevelius (that the caption links to) states he spoke German, but was "of Bohemian origin", and "considered himself as being part of the Polish world", so the nationality doesn't really look that obvious.