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	IX/8		Second Catalogue of X-ray Sources (Amnuel+ 1982) ReadMe Similar Catalogues
1.	IX/8/catalog		The Second Catalogue of X-ray Sources (1613 rows)

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Output Order:
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Query by Position on the Sky (Adapt Form to use a List of targets)

Target Name (resolved by Simbad) or Position:

Position in Sexagesimal, or Decimal °

Target dimension:

Radius or Box size

Output preferences for Position:

	r	x,y	Position	Galactic	J2000	B1950	Ecl.J2000	none
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r and x,y are the distance to the Target;
Position is in the same coordinate system as Target.

Query by Constraints applied on Columns

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Column

Constraint

Explain (UCD)

recno

Record number within the original table (starting from 1) (meta.record) (RECORD)

2XRS

(char)

Name (based on B1950 position) (meta.id;meta.main) (ID_MAIN)

RAB1950

"h:m:s"

Right Ascension B1950 (hours) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)

DEB1950

"d:m:s"

Declination B1950 (degrees) (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)

n_Pos

(char)

[O?RGS] note on position (Note 1) (meta.note) (NOTE)

Xname

(char)

Alternative name from X-ray catalog (meta.id) (ID_ALTERNATIVE)

Box

deg2

⁽ⁿ⁾ Error box area (stat.error) (ERROR)

ObsDate

(char)

Date of measurement (time.epoch) (TIME_DATE)

Mission

(char)

Designation of the type or Mission (Note 2) (meta.id;instr.obsty) (OBSTY_ID)

Elow

keV

⁽ⁿ⁾ Lower energy range (em.energy) (PHYS_ENERGY_X)

Eup

keV

⁽ⁿ⁾ Upper energy range (em.energy) (PHYS_ENERGY_X)

Int

uJy

⁽ⁿ⁾ Maximum intensity (phot.flux;em.X-ray) (PHOT_FLUX_X)

Notes

(char)

Ratio of maximum to minimum intensity for variable sources, and additional notes (meta.note) (NOTE)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

Adapt
Form
(usage)

Columns with UCDs:
Allow LISTs from file: