SDSS J154418.13+215742.7

All names: SDSS J154418.12+215742.7, Gaia DR2 1217284170813524352, SDSS J154418.13+215742.7, GALEX J154418.0+215742, Gaia DR3 1217284170813524352, Gaia EDR3 1217284170813524352, SDSS J154418.13+215742.77

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Gaia DR2 Kepler et al. 2015 Simbad
Right ascension 15 44 18.11 (8) 15 44 18.13 15 44 18.11 (6) 15 44 18.11 (8)
Declination 21 57 42.82 (6) 21 57 42.77 21 57 42.82 (6) 21 57 42.82 (6)
Spectral type DA DA
Effective temperature [K] 8362.0 (215)
log(g) [cgs] 6.96 (0.6)
Mass [M☉] 0.239 (0.2)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas]
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr]
Proper motion (declination) [mas/yr]
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.83 (0.2) 21.76 (0.1) 21.76 (0.1)
g magnitude 21.16 (0.04) 21.17 (0.05) 21.16 (0.04)
r magnitude 21.16 (0.05) 21.14 (0.05) 21.16 (0.05)
i magnitude 21.16 (0.07) 21.17 (0.07) 21.16 (0.07)
z magnitude 21.13 (0.3) 21.17 (0.3) 21.17 (0.3)
G magnitude 21.06 (0.2) 21.17 21.06 (0.02)
BP magnitude 20.89 (0.2)
RP magnitude 20.58 (0.2)
Pan g magnitude 21.14 (0.03)
Pan r magnitude 21.12 (0.04)
Pan i magnitude 21.13 (0.03)
Pan z magnitude 21.13 (0.06)
Pan y magnitude
E(B-V)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.