Dictionary of Nomenclature of Celestial Objects
(Last update: 22-Mar-2024)

Result of query: info cati LQAC 138-020 001$
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Details on Acronym:   LQAC
  
LQAC (Large Quasar Astrometric Catalog)
Write:<<LQAC DDD+DDD NNN>>
N: 187504+321957+443725+592809
Object:QSO  (SIMBAD class: QSO = Quasar)
Note:The Large Quasar Astrometric Catalogue is a compilation of quasars.
An LQAC name is given for each object based on its equatorial coordinates with respect to the ICRS: this number was constructed starting from boxes defined from intervals in degrees both in right ascension and declination. For instance, the quasar named LQAC 200+045 002 is the second one included in the box corresponding to intervals 200°<α<201° and 45°<δ<46°.
The second release (LQAC-2): N=187504 quasars.
The third release (LQAC-3): N=321957 quasars.
The fourth release (LQCA-4): N=443725 quasars.
The fifth release (LQAC-5): N=592809 quasars.
Ref:=2012A&A...537A..99S
bySOUCHAY J. , ANDREI A.H., BARACHE C., BOUQUILLON S., SUCHET D., TARIS F., PERALTA R.
 Astron. Astrophys., 537A, 99-99 (2012)
  The second release of the Large Quasar Astrometric Catalog (LQAC-2).
olqac2: <LQAC DDD+DDD NNN> N=187504.
Ref:=2015A&A...583A..75S
bySOUCHAY J. , ANDREI A.H., BARACHE C., KALEWICZ T., GATTANO C., COELHO B., TARIS F., BOUQUILLON S., BECKER O.
 Astron. Astrophys., 583A, 75-75 (2015)
  The third release of the Large Quasar Astrometric Catalog (LQAC-3): a compilation of 321 957 objects.
olqac3: <LQAC DDD+DDD NNN> N=321957.
Ref:=2018A&A...614A.140G
byGATTANO C. , ANDREI A.H., COELHO B., SOUCHAY J., BARACHE C., TARIS F.
 Astron. Astrophys., 614A, 140-140 (2018)
  LQAC-4: Fourth release of the Large Quasar Astrometric Catalogue. Compilation of 443 725 objects including cross-identifications with Gaia DR1.
olqac4: <LQAC DDD+DDD NNN> N=443725.
Ref:=2019A&A...624A.145S
bySOUCHAY J. , GATTANO C., ANDREI A.H., SOUAMI D., COELHO B., BARACHE C., TARIS F., SECREST N., BERTHEREAU A.
 Astron. Astrophys., 624A, 145-145 (2019)
  LQAC-5: The fifth release of the Large Quasar Astrometric Catalogue. A compilation of 592 809 objects with 398 697 Gaia counterparts.
=E=Catalogue in electronic form as <J/A+A/537/A99/>
=E=Catalogue in electronic form as <J/A+A/583/A75/>
=E=Catalogue in electronic form as <J/A+A/614/A140/>
=E=Catalogue in electronic form as <J/A+A/624/A145/>
Originof the Acronym: A = Assigned by the author(s)