SDSS J170816.36+222551.1

All names: Gaia EDR3 4568269229124267904, SDSS J170816.36+222551.13, GALEX J170816.3+222551, SDSS J170816.36+222551.1, Gaia DR2 4568269229123390336, Gaia DR3 4568269229124267904, SDSS J170816.36+222551.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 17 08 16.36 (0.1) 17 08 16.36 17 08 16.36 (0.3) 17 08 16.36 (0.1)
Declination 22 25 51.08 (0.2) 22 25 51.09 22 25 51.07 (0.3) 22 25 51.03 (0.2)
Spectral type DA DAH: DAH: DAH DA
Effective temperature [K] 18689.0 (889) 14626.0 21894.0 (447)
log(g) [cgs] 7.29 (0.2) 7.10 6.74 (0.07)
Mass [M] 0.3254135381135449 (0.1) 0.262
log(Luminosity) [L]
Cooling age [Gyr] 0.0810
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] 0.93 (0.3) 1.29 (0.4) 0.93 (0.3)
Distance [pc] 1070.21 (297) 777.16 (259) 1070.21 (297)
Composition H
Proper motion (right ascension) [mas/yr] -2.1822953 (0.2) -1.769015442 (0.7) -2.182 (0.2)
Proper motion (declination) [mas/yr] 2.758010469 (0.3) 3.590163641 (0.6) 2.758 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.48 (0.03) 19.50 (0.03) 19.48 (0.03)
g magnitude 19.30 (0.01) 19.32 (0.01) 19.30 (0.01)
r magnitude 19.64 (0.02) 19.65 (0.02) 19.64 (0.01)
i magnitude 19.87 (0.02) 19.88 (0.02) 19.87 (0.02)
z magnitude 19.97 (0.09) 19.91 (0.08) 19.97 (0.09)
G magnitude 19.48 (0.03) 19.51 19.48 (0.004)
BP magnitude 19.44 (0.03) 19.39
RP magnitude 19.59 (0.04) 19.59
Pan g magnitude 19.35 (0.009)
Pan r magnitude 19.63 (0.009)
Pan i magnitude 19.95 (0.01)
Pan z magnitude 20.14 (0.03)
Pan y magnitude 20.40 (0.1)
E(B-V) 0.038

* 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.