SDSS J141920.92+411255.0

All names: SDSS J141920.92+411255.0, SDSS J141920.96+411254.7, USNO-B1.0 1312-00245754, SDSS J141920.96+411254.76, Gaia DR2 1491917745659075840, GALEX J141920.9+411255, Gaia DR3 1491917745659075840, USNO-A2.0 1275-08417382, Gaia EDR3 1491917745659075840

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 14 19 20.96 (0.1) 14 19 20.92 14 19 20.96 (0.2) 14 19 20.96 14 19 20.91 (0.1)
Declination 41 12 54.57 (0.1) 41 12 55.08 41 12 54.58 (0.2) 41 12 54.57 41 12 55.17 (0.1)
Spectral type DB DB DB DBA DB
Effective temperature [K] 14153.0 14398.0 12778.0 14564.0 (84) 14800.0 (134) 13733.0 (730)
log(g) [cgs] 7.84 8.09 7.91 8.00 (0) 8.20 (0.1) 8.07 (0.08)
Mass [M] 0.5 0.641 0.535 0.7609999999999999 (0.06) 0.632 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.2825
log(H/He) <-6.309 <-5.37
log(C/He)
log(Ca/He) <-7.77
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 3.29 (0.2) 3.19 (0.2) 3.29 3.29 (0.2)
Distance [pc] 303.86 (15) 313.54 (21) 343.00 303.86 303.86 (15)
Composition He
Proper motion (right ascension) [mas/yr] 39.95983087 (0.1) 40.10165956 (0.3) 39.96 (0.1)
Proper motion (declination) [mas/yr] -37.75388272 (0.2) -37.86064509 (0.3) -37.754 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.80
V magnitude
R magnitude 18.90
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.86 (0.02) 18.90 (0.09) 18.86 (0.02)
g magnitude 18.85 (0.009) 18.85 (0.02) 18.85 (0.009)
r magnitude 19.13 (0.01) 19.14 (0.02) 19.14 (0.01)
i magnitude 19.36 (0.02) 19.37 (0.02) 19.36 (0.02)
z magnitude 19.64 (0.08) 19.62 (0.08) 19.64 (0.08)
G magnitude 19.00 (0.02) 19.05 19.00 19.00 (0.003)
BP magnitude 18.99 (0.02) 18.92
RP magnitude 19.11 (0.03) 19.06
Pan g magnitude 18.91 (0.006)
Pan r magnitude 19.15 (0.01)
Pan i magnitude 19.38 (0.007)
Pan z magnitude 19.59 (0.02)
Pan y magnitude 19.64 (0.02)
E(B-V) 0.021

* 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.