WD 2237+819

All names: Gaia DR3 2287248210301342336, TIC 470207307, Gaia DR2 2287248210301342336, Gaia EDR3 2287248210301342336, 2MASS J22371556+8210273, HS 2237+8154, GALEX J223715.4+821027, V* V896 Cep, WD 2237+819

Parameter Unit Gaia EDR3 Gaia DR2 Stilism Gianninas et al. 2011 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 22 37 15.59 (0.03) 22 37 15.59 (0.04) 22 37 15.56 (0.03) 22 37 15.22
Declination 82 10 27.67 (0.03) 82 10 27.66 (0.04) 82 10 27.36 (0.03) 82 10 25.68
Spectral type DA DA2.8 DA
Effective temperature [K] 18180.0 (387)
log(g) [cgs] 8.50 (0.06)
Mass [M] 0.93 (0.04)
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 12.65 (0.03) 12.65 (0.04) 12.65 (0.03)
Distance [pc] 79.05 (0.2) 79.08 (0.3) 74.00 79.05 (0.2)
Composition H
Proper motion (right ascension) [mas/yr] 4.354985623 (0.04) 4.445888558 (0.08) 4.355 (0.04)
Proper motion (declination) [mas/yr] 19.37957009 (0.03) 19.40710084 (0.07) 19.38 (0.03)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 12.82 (0.03)
H magnitude 12.28 (0.03)
K magnitude 11.98 (0.02)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.40 (0.004) 15.41 15.40 (0.003)
BP magnitude 16.18 (0.004) 16.18
RP magnitude 14.43 (0.005) 14.44
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.005

* 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.