SDSS J171607.71+285006.9

All names: GALEX J171607.7+285007, Gaia EDR3 4575337950720459392, Gaia DR2 4575337950720459392, SDSS J171607.70+285006.9, Gaia DR3 4575337950720459392, SDSS J171607.71+285006.9, SDSS J171607.71+285006.98, SDSS J171607.71+285007.0, SDSS J171607.70+285006.8

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 17 16 07.66 (0.1) 17 16 07.70 17 16 07.66 (0.1) 17 16 07.66 17 16 07.71 (0.1)
Declination 28 50 07.07 (0.1) 28 50 06.89 28 50 07.07 (0.2) 28 50 07.07 28 50 06.93 (0.1)
Spectral type DB: DB: DC DP DB:+MS
Effective temperature [K] 13969.0 10022.0 10292.0 11012.0 (197) 11566.0 (1000) 9915.0 (410)
log(g) [cgs] 9.08 8.31 8.36 8.00 (0) 7.35 (0.5) 8.27 (0.07)
Mass [M] 1.223 0.775 0.811 0.747 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.9904
log(H/He) <-6.192 <-5.47
log(C/He)
log(Ca/He) <-10.29
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] 6.13 (0.2) 6.20 (0.2) 6.13 6.13 (0.2)
Distance [pc] 163.01 (4) 161.30 (5) 222.00 163.01 163.01 (4)
Composition He
Proper motion (right ascension) [mas/yr] -41.76558865 (0.2) -42.23118548 (0.3) -41.766 (0.2)
Proper motion (declination) [mas/yr] 9.059289625 (0.2) 9.411970046 (0.4) 9.059 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.05 (0.02) 19.05 (0.02) 19.05 (0.02)
g magnitude 18.78 (0.008) 18.78 (0.01) 18.78 (0.008)
r magnitude 18.86 (0.009) 18.86 (0.01) 18.86 (0.009)
i magnitude 18.99 (0.01) 18.99 (0.01) 19.00 (0.01)
z magnitude 19.23 (0.04) 19.23 (0.04) 19.23 (0.04)
G magnitude 18.78 (0.02) 18.82 18.78 18.78 (0.003)
BP magnitude 18.85 (0.02) 18.86
RP magnitude 18.74 (0.04) 18.68
Pan g magnitude 18.76 (0.003)
Pan r magnitude 18.86 (0.01)
Pan i magnitude 19.00 (0.006)
Pan z magnitude 19.20 (0.01)
Pan y magnitude 19.25 (0.05)
E(B-V) 0.018

* 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.