MAXIMASTER ivo://nasa.heasarc/maximaster NASA/GSFC HEASARC HEASARC 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Observation The MAXIMASTER database table records high-level information of the Monitor of All-sky X-ray Image (MAXI) observations and provides access to the data archive. MAXI is a Japanese experiment located at the International Space Station (ISS), designed to continuously monitor, through a systematic survey, X-ray sources as the ISS orbits Earth. MAXI was launched by the space shuttle Endeavour on 2009 July 16, then mounted on port No. 1 on JEM-EF on July 24. After the electric power was turned on, MAXI started nominal observations on 2009 August 3. The MAXI data are a copy of the MAXI data processing; the output of which is hosted at the DARTS archive located at ISAS (<a href="https://darts.isas.jaxa.jp/astro/maxi/">https://darts.isas.jaxa.jp/astro/maxi/</a>). This catalog is then generated at the HEASARC by collecting high-level information from the data and is updated regularly during operation. This is a service provided by NASA HEASARC . 2009PASJ...61..999M https://heasarc.gsfc.nasa.gov/W3Browse/all/maximaster.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=maximaster& GET text/xml 180 99999 true 45 -84.149733 0.133333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=maximaster GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_maximaster&Action=More+Options&Action=Parameter+Search&ConeAdd=1 MAXI 0.133333333333333 X-ray public maximaster MAXI Master Catalog "__x_ra_dec" System unit vector column double nullable bii Galactic Latitude (Pointing Position) degree pos.galactic.lat double nullable sscmedz_flag Flag [0/1] Indicates SSCMEDZ Data Are Present meta.code;instr.param char nullable dec Declination (Pointing Position) degree pos.eq.dec;meta.main double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable gscmed_flag Flag [0/1] Indicates GSCMED Data Are Present meta.code;instr.param char nullable "time" Start Time of the Configuration mjd time.start;obs double nullable obsid Unique Observation/Sequence Number meta.id;obs char nullable tile_number Tile Number meta.number;obs.param char nullable sscmedh_flag Flag [0/1] Indicates SSCMEDH Data Are Present meta.code;instr.param char nullable "__row" System index column char nullable gsclow_flag Flag [0/1] Indicates GSCLOW Data Are Present meta.code;instr.param char nullable lii Galactic Longitude (Pointing Position) degree pos.galactic.lon double nullable processing_date Date of Processing mjd time.processing double nullable processing_version Version of Processing Script meta.version char nullable info_from File from Which This Information Originates meta.ref char nullable unique_id Unique Dataset Identifier for a Given Observation and Tile Number meta.id;meta.main char nullable end_time Stop Time of the Configuration mjd time.end;obs double nullable ra Right Ascension (Pointing Position) degree pos.eq.ra;meta.main double nullable