SDSS J085412.33+234244.4

All names: Gaia EDR3 689641283811454080, SDSS J085412.32+234244.3, SDSS J085412.33+234244.3, GALEX J085412.3+234245, Gaia DR2 689641283811454080, Gaia DR3 689641283811454080, SDSS J085412.33+234244.4

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 08 54 12.34 (0.3) 08 54 12.33 08 54 12.34 (0.4) 08 54 12.32 (0.3) 08 54 12.33
Declination 23 42 44.05 (0.1) 23 42 44.37 23 42 44.06 (0.2) 23 42 44.37 (0.1) 23 42 44.35
Spectral type DA DA DA DA
Effective temperature [K] 14255.0 16041.0 (327)
log(g) [cgs] 8.11 7.80 (0.08)
Mass [M] 0.678 0.517 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.2733
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] 2.52 (0.4) 2.79 (0.6) 2.52 (0.4)
Distance [pc] 396.59 (58) 358.62 (71) 396.59 (58)
Composition H
Proper motion (right ascension) [mas/yr] 19.77430622 (0.4) 20.15928306 (0.7) 19.774 (0.4)
Proper motion (declination) [mas/yr] -19.71672668 (0.2) -19.94338144 (0.4) -19.717 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.55 (0.03) 19.55 (0.03) 19.56 (0.04)
g magnitude 19.21 (0.01) 19.21 (0.01) 19.22 (0.02)
r magnitude 19.47 (0.02) 19.47 (0.02) 19.49 (0.02)
i magnitude 19.66 (0.03) 19.66 (0.03) 19.66 (0.03)
z magnitude 19.98 (0.1) 19.98 (0.1) 19.99 (0.1)
G magnitude 19.36 (0.02) 19.39 19.36 (0.004)
BP magnitude 19.30 (0.02) 19.38
RP magnitude 19.42 (0.07) 19.47
Pan g magnitude 19.23 (0.007)
Pan r magnitude 19.48 (0.02)
Pan i magnitude 19.75 (0.01)
Pan z magnitude 20.01 (0.04)
Pan y magnitude 19.82 (0.1)
E(B-V) 0.026

* 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.