ISOHDFS 27 is a spiral galaxy in the constellation Tucana, and was discovered in the Hubble Deep Field South survey. It is the most massive spiral galaxy found in the survey, measuring 130,000 light-years (40,000 parsecs) in diameter. It is located approximately 6 billion light-years (1.8 billion parsecs) from Earth and has a mass of 1.04×10¹² solar masses (M_☉), about four times as massive as the Milky Way.

This article does not cite any sources. (December 2017)

ISOHDFS 27
ISOHDFS 27 taken by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Tucana
Right ascension	22h 32m 47.7s
Declination	−60° 33′ 35.9″
Redshift	0.5807±0.0003
Helio radial velocity	174,090 km/s (108,170 mi/s)
Galactocentric velocity	174,009 km/s (108,124 mi/s)
Distance	6 billion ly (1.8 billion pc) (light travel distance) 7 billion ly (2.1 billion pc) (comoving distance)
Apparent magnitude (V)	20.51
Characteristics
Type	Sab
Mass	1.04×1012 M☉
Size	130,000 ly (40,000 pc)
Apparent size (V)	0.07 × 0.07
Other designations
HDFS J223247.66-603335.9, LFR2003 193, SB-WF 3572-1508, CDD2000 1670

See also

• List of galaxies

External links

• "Massive spiral galaxy ISOHDFS 27" by the European Southern Observatory
• ISOHDFS 27 on SIMBAD
• ISOHDFS 27 on NASA/IPAC Extragalactic Database

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