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 18
Hyperleda (PGC) Code 40927
GWGC Name NGC4440
Hyperleda (PGC) Name NGC4440
2MASS Name 12275357+1217354
SDSS-DR12 Name null
RA (J2000°) 186.973221
Dec (J2000°) 12.293191
Luminosity Distance (Mpc) 18.6525891462
δLuminosity Distance (Mpc) ± None
z (Redshift) 0.00434028217014
B Magnitude (apparent) 12.63
δB Magnitude (apparent) ± 0.18
B Magnitude (absolute) None
J Magnitude (apparent) 9.901
δJ Magnitude (apparent) ± 0.014
H Magnitude (apparent) 9.225
δH Magnitude (apparent) ± 0.018
K Magnitude (apparent) 9.005
δK Magnitude (apparent) ± 0.021
Flag1 G
Flag2 3
Flag3 0