All names: Gaia DR2 3836330725125750528, COSMOS J095923.47+023143.5, SDSS J095923.47+023143.6, GALEX J095923.4+023143, Gaia EDR3 3836330725125750528, SDSS J095923.47+023143.3, COSMOS 2414145, SDSS J095923.47+023143.62, [LKK2008] J095923.48+023143.5, USNO-A2.0 0900-06563721, Gaia DR3 3836330725125750528
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 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 09 59 23.48 (0.3) | 09 59 23.48 | 09 59 23.48 (0.5) | 09 59 23.48 (0.3) | |||||||||
Declination | 02 31 43.59 (0.3) | 02 31 43.37 | 02 31 43.58 (0.4) | 02 31 43.33 (0.3) | |||||||||
Spectral type | DB | DB | DB | DB | |||||||||
Effective temperature | [K] | 15575.0 | 14774.0 | 14178.0 | 15499.0 (97) | 15520.0 (140) | |||||||
log(g) | [cgs] | 7.99 | 8.24 | 8.22 | 8.00 (0) | 8.02 (0.1) | |||||||
Mass | [M☉] | 0.584 | 0.735 | 0.726 | 0.604 (0.06) | ||||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 0.3448 | |||||||||||
log(H/He) | -5.802 | <-5.07 | |||||||||||
log(C/He) | |||||||||||||
log(Ca/He) | <-6.85 | ||||||||||||
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] | 2.35 (0.4) | 3.10 (0.7) | 2.35 (0.4) | |||||||||
Distance | [pc] | 424.78 (70) | 322.11 (72) | 398.00 | 424.77 (70) | ||||||||
Composition | He | ||||||||||||
Proper motion (right ascension) | [mas/yr] | 2.492023526 (0.3) | 3.122320835 (0.7) | 2.492 (0.3) | |||||||||
Proper motion (declination) | [mas/yr] | 16.04295861 (0.3) | 16.06374805 (0.7) | 16.043 (0.3) | |||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | 19.21 (0.005) | ||||||||||||
V magnitude | 19.45 (0.004) | ||||||||||||
R magnitude | 18.50 (0.3) | ||||||||||||
I magnitude | |||||||||||||
J magnitude | |||||||||||||
H magnitude | |||||||||||||
K magnitude | 21.85 (0.3) | ||||||||||||
u magnitude | 19.03 (0.02) | 19.03 (0.02) | 19.03 (0.02) | ||||||||||
g magnitude | 19.13 (0.01) | 19.13 (0.01) | 19.13 (0.01) | ||||||||||
r magnitude | 19.42 (0.02) | 19.42 (0.02) | 19.42 (0.01) | ||||||||||
i magnitude | 19.61 (0.03) | 19.61 (0.03) | 19.61 (0.03) | ||||||||||
z magnitude | 19.81 (0.1) | 19.81 (0.1) | 19.81 (0.1) | ||||||||||
G magnitude | 19.25 (0.03) | 19.30 | 19.25 (0.005) | ||||||||||
BP magnitude | 19.24 (0.03) | 19.14 | |||||||||||
RP magnitude | 19.33 (0.06) | 19.37 | |||||||||||
Pan g magnitude | 19.18 (0.006) | ||||||||||||
Pan r magnitude | 19.43 (0.007) | ||||||||||||
Pan i magnitude | 19.66 (0.009) | ||||||||||||
Pan z magnitude | 19.90 (0.03) | ||||||||||||
Pan y magnitude | 20.02 (0.1) | ||||||||||||
E(B-V) | 0.027 |
* Constant surface field
Spectra without link are available upon request
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.