USNO-A2.0 1275-08489824

All names: WD 1436+424, USNO-A2.0 1275-08489824, WIRED J143826.04+421111.5, SDSS J143826.03+421111.5, Gaia DR3 1492954718267198208, SDSS J143826.04+421111.5, Gaia EDR3 1492954718267198208, GALEX J143826.0+421112, SDSS J143826.04+421111.6, Gaia DR2 1492954718267198208

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Tremblay et al. 2011 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 38 26.06 (0.1) 14 38 26.04 14 38 26.06 (0.2) 14 38 26.04 14 38 26.06 14 38 26.04 (0.1) 14 38 26.04 14 38 26.21 14 38 26.04
Declination 42 11 11.52 (0.1) 42 11 11.62 42 11 11.52 (0.2) 42 11 11.51 42 11 11.52 42 11 11.58 (0.1) 42 11 11.59 42 11 05.28 42 11 11.59
Spectral type DA+M DA+M DA DA DA+dM DA+M DA d DA+M DA+MS
Effective temperature [K] 8485.0 11433.0 (310) 11200.0 (230) 10338.0 (87) 10229.0 (87)
log(g) [cgs] 6.78 8.34 (0.2) 7.91 (0.1) 7.87 (0.1) 7.84 (0.1)
Mass [M] 0.164 0.82 (0.1) 0.55 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.4266
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] 2.68 (0.2) 2.58 (0.2) 2.68 2.68 (0.2)
Distance [pc] 372.54 (22) 386.85 (30) 259.00 (8) 372.54 372.54 (22)
Composition H H
Proper motion (right ascension) [mas/yr] 9.318168033 (0.1) 9.452229568 (0.3) 9.318 (0.1) 8.4
Proper motion (declination) [mas/yr] -3.952523698 (0.2) -3.918277775 (0.3) -3.953 (0.2) -1.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS WDMS
B magnitude 18.40 (0.3)
V magnitude
R magnitude 18.90 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.57 (0.03) 19.59 19.57 (0.03) 19.59 (0.03) 19.59 19.58 (0.03)
g magnitude 19.01 (0.009) 19.04 19.01 (0.009) 19.04 (0.01) 19.04 19.03 (0.01)
r magnitude 19.13 (0.01) 19.14 19.13 (0.01) 19.14 (0.02) 19.14 19.14 (0.02)
i magnitude 19.05 (0.01) 18.94 19.05 (0.01) 18.94 (0.03) 18.94 18.93 (0.03)
z magnitude 18.65 (0.03) 18.69 18.65 (0.03) 18.69 (0.04) 18.69 18.68 (0.04)
G magnitude 18.96 (0.02) 18.98 18.96 18.96 (0.003)
BP magnitude 19.14 (0.02) 19.19
RP magnitude 18.65 (0.02) 18.68
Pan g magnitude 19.00 (0.006)
Pan r magnitude 19.19 (0.01)
Pan i magnitude 19.05 (0.01)
Pan z magnitude 18.76 (0.01)
Pan y magnitude 18.50 (0.01)
E(B-V) 0.022

* 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.