EntityQ4118147· pop 6· linked from 254 articlesGRB 990123Sign in to savegamma-ray burstConnectionsBoötesEntitylist of stars in BoötesEntitylist of NGC objects (5001–6000)EntityNGC 5591EntityCaliforniaEntitystarEntityMarylandEntitylightEntitygalaxyEntityCanary IslandsEntityconstellationEntityHubble Space TelescopeEntityexoplanetEntitydigital object identifierEntitybinocularsEntityredshiftEntitystar clusterEntityUniversity of MichiganEntityArcturusEntityapparent magnitudeEntityCategoriesAstronomical objects discovered in 1999BoötesJanuary 1999Long-duration gamma-ray bursts