SDSS J001808.56+090018.0

All names: Gaia DR3 2752318294290779776, SDSS J001808.55+090018.0, Gaia DR2 2752318294290779776, Gaia EDR3 2752318294290779776, SDSS J001808.56+090018.05, SDSS J001808.56+090018.0, GALEX J001808.5+090020

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Gaia DR2 Kepler et al. 2015 Simbad
Right ascension 00 18 08.55 (2) 00 18 08.56 00 18 08.55 (3) 00 18 08.56 (2)
Declination 09 00 18.02 (2) 09 00 18.05 09 00 18.03 (3) 09 00 18.25 (2)
Spectral type DA+M4 DA+M4
Effective temperature [K] 15964.0 (959)
log(g) [cgs] 7.40 (0.2)
Mass [M☉] 0.384 (0.07)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -1.11 (2)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -5.532547742 (3) -5.533 (3)
Proper motion (declination) [mas/yr] -14.63011175 (2) -14.63 (2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.70 (0.1) 21.70 (0.1) 21.70 (0.1)
g magnitude 20.95 (0.03) 20.95 (0.03) 20.95 (0.04)
r magnitude 21.01 (0.04) 21.01 (0.04) 21.01 (0.04)
i magnitude 20.83 (0.05) 20.83 (0.05) 20.83 (0.06)
z magnitude 20.46 (0.1) 20.46 (0.1) 20.46 (0.1)
G magnitude 20.99 (0.2) 20.93 20.99 (0.02)
BP magnitude 21.11 (0.2) 20.19
RP magnitude 20.10 (0.2) 19.87
Pan g magnitude 20.94 (0.03)
Pan r magnitude 20.92 (0.03)
Pan i magnitude 20.77 (0.03)
Pan z magnitude 20.36 (0.04)
Pan y magnitude 19.93 (0.06)
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.