SDSS J090754.17+555955.4

All names: SDSS J090754.19+555954.9, USNO-A2.0 1425-07280157, Gaia EDR3 1036392547879925632, SDSS J090754.17+555955.4, Gaia DR3 1036392547879925632, GALEX J090754.2+555955, SDSS J090754.19+555954.96, SDSS J090754.18+555955.4, Gaia DR2 1036392547879925632

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 09 07 54.20 (0.2) 09 07 54.18 09 07 54.20 (0.2) 09 07 54.20 09 07 54.18 (0.2)
Declination 55 59 54.88 (0.2) 55 59 55.44 55 59 54.90 (0.2) 55 59 54.88 55 59 55.45 (0.2)
Spectral type DA DA-He DA-He DA DA-He DA
Effective temperature [K] 13961.4 (709) 9964.0 11205.0 (189) 10522.0 (454)
log(g) [cgs] 8.54 (0.6) 8.10 8.00 (0) 8.21 (0.09)
Mass [M] 0.9502041423908588 (0.7) 0.661 0.733 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.7022
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] 4.41 (0.3) 4.44 (0.3) 4.41 4.41 (0.3)
Distance [pc] 226.95 (13) 224.98 (17) 226.95 226.95 (13)
Composition H
Proper motion (right ascension) [mas/yr] 13.52188011 (0.2) 14.2292491 (0.6) 13.522 (0.2)
Proper motion (declination) [mas/yr] -35.92149816 (0.2) -36.41362934 (0.7) -35.921 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.60 (0.3)
V magnitude
R magnitude 18.50 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.13 (0.02) 19.17 (0.02) 19.13 (0.02)
g magnitude 19.04 (0.01) 19.09 (0.02) 19.04 (0.01)
r magnitude 19.18 (0.01) 19.22 (0.02) 19.18 (0.01)
i magnitude 19.30 (0.02) 19.34 (0.02) 19.30 (0.02)
z magnitude 19.54 (0.07) 19.59 (0.07) 19.54 (0.07)
G magnitude 19.14 (0.02) 19.17 19.14 19.14 (0.004)
BP magnitude 19.15 (0.02) 19.08
RP magnitude 19.07 (0.04) 19.01
Pan g magnitude 19.09 (0.007)
Pan r magnitude 19.18 (0.009)
Pan i magnitude 19.30 (0.008)
Pan z magnitude 19.52 (0.02)
Pan y magnitude 19.41 (0.06)
E(B-V) 0.014

* 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.