Explanation of the columns in the double star list.

The data in this list are a compendium of the United States Naval Observatory's main catalog, neglected stars, notes, and alternate star name list. The data in your list are taken from these documents and filtered according to your submitted specifications.


Row color explanation:

Note: Data are listed for all pairs, irrespective of the highlight color.

The USNO gives a detailed explanation of neglected stars. Click here to go there.

The J2000 coordinates are formatted such that they can be copied into tools such as Aladin or WikiSky to display the DSS image at that location.

The WDS Id is a 10 digit string that reflects a low precision coordinate of the pair.

The Dsc Id gives the discoverer's initials or designator, and the number of the pair in their published list.

Const is the IAU 3 letter abbreviation of the constellation in which the pair is located.

A mv is the visual magnitude of the primary. Other bandpasses for a pair are described in the notes column.

B mv is the visual magnitude of the secondary.

Spectra is the spectral type of the primary. At times the secondary's spectrum is listed as well.

First and last θ are the the earliest and most recent position angles of the pair, in degrees.

First and last ρ are the earliest and most recent separations, in arc seconds, of the pair.

First and last Obs are the first year the pair was observed and the year of the most recent observation.

Pairs with known orbits:

Pairs with linear plots:

AKA (Also Known As) lists other common names for the pair.

Comments:

Notes: If a star has an entry in the WDS notes document, the word "Note##" where ## is the number of the note appears in this column. Clicking on it will take you to the text of that note.