LB 9245

All names: SDSS J090453.55+163750.8, USNO-B1.0 1066-00167605, SDSS J090453.52+163751.1, PSO J090453.552+163750.862, Gaia DR2 610925975068904576, SDSS J090453.55+163750.84

Parameter Unit MWDD H MWDD HE Pan-STARRS DR1 Gaia DR2 Kepler et al. 2015 SDSS DR10 Simbad
Right ascension 09 04 53.56 (0.3) 09 04 53.53 09 04 53.53
Declination 16 37 50.68 (0.3) 16 37 51.11 16 37 51.11
Spectral type DC DC DC DC
Effective temperature [K] 10216.0 10225.0 8735.0 (1000)
log(g) [cgs] 8.23 8.17 9.00 (0.5)
Mass [M☉] 0.745 0.685
log(Luminosity) [L☉]
Cooling age [Gyr] 0.8057 0.7578
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 6.93 (0.3)
Distance [pc] 144.27 (6)
Composition
Proper motion (right ascension) [mas/yr] 38.5552984624 (0.5) 40.0
Proper motion (declination) [mas/yr] -40.5880394858 (0.5) -40.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.90
V magnitude
R magnitude 18.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.34 (0.01) 18.34 (0.01) 18.34
g magnitude 18.20 (0.01) 18.20 (0.007) 18.20
r magnitude 18.32 (0.01) 18.32 (0.008) 18.32
i magnitude 18.49 (0.01) 18.49 (0.01) 18.49
z magnitude 18.67 (0.03) 18.67 (0.03) 18.67
G magnitude 18.27
BP magnitude 18.24
RP magnitude 18.13
Pan g magnitude 18.24 (0.004)
Pan r magnitude 18.33 (0.006)
Pan i magnitude 18.50 (0.009)
Pan z magnitude 18.66 (0.007)
Pan y magnitude 18.75 (0.03)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.