The Steward Alerts for Science System (SASSy) provides access to various alerts and cross-correlation with catalogs. We provide support for queries to alerts and database(s) sourced from the Galaxy List for the Advanced Detector Era (GLADE), the Gravitational Wave Galaxy Catalog (GWGC), (ad-hoc) alerts from the Laser Interferometer Gravitational-Wave Observatory (LIGO), the Transient Name Server (TNS) and the Zwicky Transient Facility (ZTF). Further information is available in the (help) and (api) sections.

These pages are adapted from the code from LCOGT (Las Cumbres Observatory Global Telescope) which delivers the MARS (Make Alerts Really Simple) website.

Details for GLADE (Q3C) record

Item Value
ID 1
Hyperleda (PGC) Code 2789
GWGC Name NGC0253
Hyperleda (PGC) Name NGC0253
2MASS Name 00473313-2517196
SDSS-DR12 Name null
RA (J2000°) 11.88806
Dec (J2000°) -25.288799
Luminosity Distance (Mpc) 3.92595099046
δLuminosity Distance (Mpc) ± None
z (Redshift) 0.00091602045801
B Magnitude (apparent) 7.34
δB Magnitude (apparent) ± 0.3
B Magnitude (absolute) None
J Magnitude (apparent) 4.874
δJ Magnitude (apparent) ± 0.015
H Magnitude (apparent) 4.143
δH Magnitude (apparent) ± 0.015
K Magnitude (apparent) 3.822
δK Magnitude (apparent) ± 0.016
Flag1 G
Flag2 3
Flag3 0