SDSS J154218.03+250810.2

All names: Gaia EDR3 1221314907426518784, GALEX J154218.0+250810, SDSS J154218.03+250810.2, SDSS J154218.03+250810.1, Gaia DR2 1221314907426518784, Gaia DR3 1221314907426518784

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 42 18.03 (0.2) 15 42 18.03 15 42 18.03 (0.2) 15 42 18.03 (0.2) 15 42 18.03
Declination 25 08 10.01 (0.2) 25 08 10.17 25 08 10.02 (0.3) 25 08 10.23 (0.2) 25 08 10.22
Spectral type DA DA DA DA
Effective temperature [K] 12666.0 13666.0 (482)
log(g) [cgs] 8.43 7.86 (0.1)
Mass [M] 0.88 0.538 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.6291
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] 3.24 (0.3) 3.31 (0.4) 3.24 (0.3)
Distance [pc] 308.96 (29) 302.33 (41) 308.96 (29)
Composition H
Proper motion (right ascension) [mas/yr] 3.940566578 (0.2) 3.81286487 (0.6) 3.941 (0.2)
Proper motion (declination) [mas/yr] -13.5565335 (0.3) -12.91555245 (0.6) -13.557 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.00 (0.04) 20.00 (0.04) 19.99 (0.04)
g magnitude 19.56 (0.01) 19.56 (0.01) 19.57 (0.02)
r magnitude 19.81 (0.02) 19.81 (0.02) 19.81 (0.02)
i magnitude 20.05 (0.03) 20.05 (0.03) 20.04 (0.02)
z magnitude 20.36 (0.1) 20.36 (0.1) 20.37 (0.1)
G magnitude 19.67 (0.04) 19.72 19.67 (0.004)
BP magnitude 19.78 (0.04) 19.66
RP magnitude 19.80 (0.06) 19.72
Pan g magnitude 19.58 (0.01)
Pan r magnitude 19.77 (0.01)
Pan i magnitude 19.99 (0.01)
Pan z magnitude 20.23 (0.02)
Pan y magnitude 20.05 (0.1)
E(B-V) 0.042

* 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.