SDSS J142521.12+643828.4

All names: SDSS J142521.12+643828.42, Gaia EDR3 1668174506176388224, SDSS J142521.12+643828.4, Gaia DR3 1668174506176388224, Gaia DR2 1668174506176388224

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Kepler et al. 2016 Simbad
Right ascension 14 25 21.11 (0.7) 14 25 21.11 14 25 21.11 (1) 14 25 21.12 (0.7)
Declination 64 38 28.34 (0.8) 64 38 28.41 64 38 28.34 (1) 64 38 28.38 (0.8)
Spectral type sdA: sdA: sdA: sdA
Effective temperature [K] 8213.0 8210.0 8713.0 (255)
log(g) [cgs] 7.19 7.15 6.00 (1)
Mass [M] 0.251 0.221
log(Luminosity) [L]
Cooling age [Gyr] 0.4665 0.4917
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.85 (0.8) -1.81 (1)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -2.573102884 (1) -4.550561391 (2) -2.573 (1)
Proper motion (declination) [mas/yr] -2.274585948 (1) -2.815695707 (2) -2.275 (1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.29 (0.1) 21.30 (0.1) 21.30 (0.1)
g magnitude 20.54 (0.02) 20.54 (0.03) 20.54 (0.03)
r magnitude 20.56 (0.03) 20.58 (0.04) 20.58 (0.04)
i magnitude 20.63 (0.05) 20.60 (0.05) 20.60 (0.05)
z magnitude 20.68 (0.2) 20.66 (0.2) 20.66 (0.2)
G magnitude 20.53 (0.1) 20.59 20.53 (0.01)
BP magnitude 20.62 (0.1) 20.54
RP magnitude 20.14 (0.1) 19.76
Pan g magnitude 20.57 (0.04)
Pan r magnitude 20.55 (0.03)
Pan i magnitude 20.72 (0.02)
Pan z magnitude 20.66 (0.05)
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.