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 22
Hyperleda (PGC) Code 40809
GWGC Name NGC4424
Hyperleda (PGC) Name NGC4424
2MASS Name null
SDSS-DR12 Name null
RA (J2000°) 186.799
Dec (J2000°) 9.42031
Luminosity Distance (Mpc) 5.75407289101
δLuminosity Distance (Mpc) ± None
z (Redshift) 0.00134211067106
B Magnitude (apparent) 12.02
δB Magnitude (apparent) ± 0.3
B Magnitude (absolute) None
J Magnitude (apparent) None
δJ Magnitude (apparent) ± None
H Magnitude (apparent) None
δH Magnitude (apparent) ± None
K Magnitude (apparent) None
δK Magnitude (apparent) ± None
Flag1 G
Flag2 3
Flag3 0