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 12
Hyperleda (PGC) Code 40950
GWGC Name NGC4442
Hyperleda (PGC) Name NGC4442
2MASS Name 12280389+0948130
SDSS-DR12 Name null
RA (J2000°) 187.01622
Dec (J2000°) 9.80362
Luminosity Distance (Mpc) 15.2759187606
δLuminosity Distance (Mpc) ± None
z (Redshift) 0.00355677177839
B Magnitude (apparent) 11.29
δB Magnitude (apparent) ± 0.3
B Magnitude (absolute) None
J Magnitude (apparent) 8.317
δJ Magnitude (apparent) ± 0.016
H Magnitude (apparent) 7.593
δH Magnitude (apparent) ± 0.016
K Magnitude (apparent) 7.381
δK Magnitude (apparent) ± 0.017
Flag1 G
Flag2 3
Flag3 0