SDSS J151451.78+311654.0

{{Infobox galaxy|name=SDSS J151451.78+311654.0|epoch=J2000.0|constellation name=Corona Borealis|dec=+31d 16m 54.07s|ra=15h 14m 51.78s|z=2.130612|h_radial_v=638,741 km/s|dist_ly=10.660 Gly (light travel time distance}|appmag_v=0.057|appmag_b=0.075|sbrightness=17.2|type=BAL|notes=Broad absoprtion-line quasar with a Mg II absorber system containing Mg II doublets|names=PGC 1939926, CSO 1085, 2MASS J15145178+3116540, 2CXO J151451.7+311654, LQAC 228+031 003|image=File:Sloan Digital Sky Survey image of SDSS J151451.78+311654.0.jpg|caption=The quasar, SDSS J151451.78+311654.0 as seen from Sloan Digital Sky Survey}}

SDSS J151451.78+311654.0 also known as CSO 1085, is a quasar located in the constellation of Corona Borealis. At the redshift of 2.13, the object is located 10.6 billion light-years from Earth.

Characteristics
SDSS J151451.78+311654.0 is classified as a radio-quiet luminous quasar between the redshift range between 1.7 ≤ z ≤ 2.7. It has a bolometric luminosity correction that is relative to 2500 Å BC2500 Å =2.75 ± 0.40 via from integrated light from 1 μm-2 keV through spectral energy distributions (SEDs) whom researchers used mid-infrared data from Spitzer and WISE, near-infrared data from the Two Micron All Sky Survey and UKIDSS, optical data from the Sloan Digital Sky Survey, and ultraviolet data from the Galaxy Evolution Explorer. It is also known to be variable, which it is at rest-frame wavelengths from 1000 Å to 6000 Å with one emission-line present at full width at half maximum larger than 500 km s-1.

Black hole
The black hole in SDSS J151451.78+311654.0 is estimated to have a solar mass of logMBH between 7.1 and 9.9 M⊙ with a bolometric luminosity between 44.4 and 47.3 logLbol erg s-1 according to researchers calculating single-epoch virial black hole masses (MBH) for the sample using Hβ, Mg II, and C IV emission lines based from derived emission line parameters. By using the ratio of Lbol to the Eddington luminosity as a measure of the accretion rate for the quasar, the logarithm of the accretion rate is found between the ranges between -2.06 and 0.43.