SDSS J154238.42-003758.9

All names: SDSS J154238.42-003759.0, SDSS J154238.42-003758.8, SDSS J154238.43-003758.9, USNO-B1.0 0893-00254023, SDSS J154238.42-003758.9, PSO J154238.427+003758.800, Gaia DR2 4404472233152006144

Parameter Unit Pan-STARRS DR1 Gaia DR2 SDSS DR12 Simbad Eisenstein et al. 2006
Right ascension 15 42 38.42 (0.4) 15 42 38.42 15 42 38.42 15 42 38.42
Declination -00 37 58.91 (0.2) -00 37 58.95 -00 37 58.91 -00 37 58.90
Spectral type sdB SDB
Effective temperature [K] 28000.0 (700)
log(g) [cgs] 5.08 (0.09)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.59 (0.4)
Distance [pc] -1690.96 (1156)
Composition
Proper motion (right ascension) [mas/yr] -8.7124416859 (0.7) -0.53 -5.3
Proper motion (declination) [mas/yr] 1.0445645038 (0.5) 1.14 11.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.68
V magnitude 19.20
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.06 (0.02) 18.98 18.98 (0.03)
g magnitude 19.05 (0.01) 19.03 19.06 (0.02)
r magnitude 19.40 (0.01) 19.35 19.35 (0.02)
i magnitude 19.65 (0.02) 19.65 19.65 (0.03)
z magnitude 19.89 (0.08) 19.83 19.84 (0.08)
G magnitude 19.25
BP magnitude 19.17
RP magnitude 19.40
Pan g magnitude 19.12 (0.007)
Pan r magnitude 19.39 (0.006)
Pan i magnitude 19.59 (0.02)
Pan z magnitude 19.77 (0.01)
Pan y magnitude 19.81 (0.07)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.