All names: SDSS J093944.19+094246.1, SDSS J093944.18+094246.1, Gaia DR3 588707525131257984, Gaia EDR3 588707525131257984, Gaia DR2 588707525131257984
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 09 39 44.19 (0.3) | 09 39 44.18 | 09 39 44.19 (0.4) | 09 39 44.18 (0.3) | 09 39 44.18 | ||||||
Declination | 09 42 46.14 (0.2) | 09 42 46.18 | 09 42 46.14 (0.5) | 09 42 46.18 (0.2) | 09 42 46.12 | ||||||
Spectral type | DC | DC | DC | DC | DC | ||||||
Effective temperature | [K] | 9456.0 | 9742.0 | 11094.0 (361) | |||||||
log(g) | [cgs] | 7.26 | 7.24 | 8.79 (0.6) | |||||||
Mass | [M☉] | 0.277 | 0.254 | ||||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.3447 | 0.3310 | ||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
Parallax | [mas] | 3.18 (0.3) | 2.49 (0.6) | 3.18 (0.3) | |||||||
Distance | [pc] | 314.27 (33) | 400.82 (94) | 314.27 (33) | |||||||
Composition | |||||||||||
Proper motion (right ascension) | [mas/yr] | 13.18464326 (0.4) | 12.08756173 (0.9) | 13.185 (0.4) | |||||||
Proper motion (declination) | [mas/yr] | -2.807446335 (0.2) | -0.891927219 (0.9) | -2.807 (0.2) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 19.38 (0.03) | 19.38 (0.03) | 19.39 (0.03) | ||||||||
g magnitude | 19.27 (0.01) | 19.27 (0.01) | 19.29 (0.01) | ||||||||
r magnitude | 19.39 (0.02) | 19.39 (0.02) | 19.43 (0.02) | ||||||||
i magnitude | 19.54 (0.03) | 19.54 (0.03) | 19.58 (0.03) | ||||||||
z magnitude | 19.70 (0.1) | 19.70 (0.1) | 19.70 (0.1) | ||||||||
G magnitude | 19.33 (0.04) | 19.36 | 19.33 (0.004) | ||||||||
BP magnitude | 19.38 (0.04) | 19.37 | |||||||||
RP magnitude | 19.28 (0.05) | 19.25 | |||||||||
Pan g magnitude | 19.36 (0.01) | ||||||||||
Pan r magnitude | 19.42 (0.01) | ||||||||||
Pan i magnitude | 19.57 (0.02) | ||||||||||
Pan z magnitude | 19.72 (0.03) | ||||||||||
Pan y magnitude | 19.67 (0.1) | ||||||||||
E(B-V) | 0.023 |
* 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.