PHL 613

All names: Gaia DR2 2747056684475100544, SDSS J235959.48+082813.0, Gaia DR3 2747056684475100544, GALEX J235959.4+082814, USNO-B1.0 0984-00667730, SDSS J235959.47+082813.0, PHL 613, Gaia EDR3 2747056684475100544, SDSS J235959.48+082813.01, USNO-A2.0 0975-21432538

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Koester & Kepler 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 23 59 59.48 (0.1) 23 59 59.48 23 59 59.48 (0.2) 23 59 59.48 23 59 59.48 (0.1)
Declination 08 28 13.00 (0.09) 08 28 13.01 08 28 13.00 (0.1) 08 28 13.00 08 28 13.09 (0.09)
Spectral type DBA DBA DB DBA DB
Effective temperature [K] 15858.0 15653.0 13507.0 16177.0 (84) 16220.0 (93) 16184.0 (1019)
log(g) [cgs] 8.40 8.25 8.06 8.15 (0.06) 8.38 (0.07) 8.18 (0.08)
Mass [M] 0.841 0.747 0.625 0.6729999999999999 (0.03) 0.698 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.3036
log(H/He) -4.622 -4.43 (0.1)
log(C/He)
log(Ca/He) <-6.79
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] 4.14 (0.2) 4.46 (0.2) 4.14 4.14 (0.2)
Distance [pc] 241.57 (1e+01) 224.11 (11) 204.00 241.57 241.56 (1e+01)
Composition He
Proper motion (right ascension) [mas/yr] -0.557834803 (0.2) -1.103926423 (0.5) -0.558 (0.2)
Proper motion (declination) [mas/yr] -5.63110867 (0.09) -5.975138033 (0.2) -5.631 (0.09)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.10
V magnitude 18.40
R magnitude 18.70
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.17 (0.01) 18.18 (0.02) 18.17 (0.01)
g magnitude 18.23 (0.007) 18.26 (0.01) 18.24 (0.007)
r magnitude 18.53 (0.008) 18.53 (0.01) 18.52 (0.008)
i magnitude 18.77 (0.01) 18.77 (0.02) 18.77 (0.01)
z magnitude 18.95 (0.04) 18.95 (0.04) 18.93 (0.04)
G magnitude 18.36 (0.01) 18.39 18.36 18.36 (0.003)
BP magnitude 18.30 (0.01) 18.27
RP magnitude 18.44 (0.02) 18.45
Pan g magnitude 18.27 (0.004)
Pan r magnitude 18.51 (0.007)
Pan i magnitude 18.75 (0.007)
Pan z magnitude 18.94 (0.009)
Pan y magnitude 19.08 (0.03)
E(B-V) 0.049

* 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.