SDSS J081505.30+160727.9

All names: SDSS J081505.30+160727.9, SDSS J081505.31+160727.9, Gaia DR3 655724133233201920, Gaia EDR3 655724133233201920, Gaia DR2 655724133233201920, SDSS J081505.31+160727.95

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 08 15 05.32 (0.3) 08 15 05.31 08 15 05.31 08 15 05.32 (0.4) 08 15 05.31 08 15 05.31 (0.3)
Declination 16 07 27.80 (0.2) 16 07 27.93 16 07 27.93 16 07 27.81 (0.2) 16 07 27.94 16 07 28.07 (0.2)
Spectral type WD+MS WD+MS DA DA+dM DA+MS
Effective temperature [K] 6394.0 15071.0 (527) 12517.0 (265)
log(g) [cgs] 6.60 7.78 (0.1) 8.11 (0.06)
Mass [M☉] 0.109 0.49 (0.06) 0.667 (0.03)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.35 (0.3) 3.17 (0.5) 2.35 (0.3)
Distance [pc] 425.06 (59) 315.29 (45) 609.00 (45) 425.06 (59)
Composition
Proper motion (right ascension) [mas/yr] 12.81924387 (0.4) 15.05763428 (0.8) 12.819 (0.4)
Proper motion (declination) [mas/yr] -16.59574524 (0.3) -16.74762848 (0.5) -16.596 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.06 (0.04) 20.06 (0.04) 20.06 20.06 (0.04) 20.06 (0.04)
g magnitude 19.62 (0.01) 19.62 (0.01) 19.64 19.64 (0.02) 19.62 (0.01)
r magnitude 19.83 (0.02) 19.83 (0.02) 19.84 19.84 (0.02) 19.82 (0.02)
i magnitude 19.74 (0.02) 19.74 (0.02) 19.75 19.75 (0.03) 19.74 (0.02)
z magnitude 19.36 (0.05) 19.36 (0.05) 19.37 19.37 (0.06) 19.36 (0.06)
G magnitude 19.62 (0.05) 19.67 19.62 (0.004)
BP magnitude 19.75 (0.05) 19.61
RP magnitude 19.30 (0.05) 19.31
Pan g magnitude 19.66 (0.007)
Pan r magnitude 19.83 (0.005)
Pan i magnitude 19.72 (0.02)
Pan z magnitude 19.45 (0.02)
Pan y magnitude 19.13 (0.03)
E(B-V) 0.024

* 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.