All names: Gaia DR2 1089400763661597440, GALEX J073330.9+640930, PSO J113.3790+64.1566, PM J07335+6409, G234-4, WDJ073330.88+640927.44, USNO-B1.0 1541-00151784, EGGR 321, J0733+6409, CNS5 1873, WD 0728+64, Gaia EDR3 1089400763661597440, NLTT 18007, GALEX J073330.9+640926, TIC 85206778, WD 0728+642, G234-004, 2MASS J07333087+6409276, Gaia DR3 1089400763661597440, LP 58-247, WISEA J073330.94+640924.7, G 234-4, GJ 1098, LSPM J0733+6409, 07335+6409
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Hardy et al. 2023a | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Ferrario et al. 2015 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 33 30.98 (0.02) | 07 33 30.98 (0.03) | 07 33 30.98 (0.03) | 07 33 30.88 | 07 33 30.72 | 07 33 30.98 | 07 33 30.88 (0.02) | 07 33 30.98 | 07 33 30.22 | ||||||||||||
| Declination | 64 09 23.31 (0.03) | 64 09 23.44 (0.03) | 64 09 23.44 (0.03) | 64 09 02.04 | 64 09 25.20 | 64 09 23.31 | 64 09 27.43 (0.03) | 64 09 23.44 | 64 09 31.68 | ||||||||||||
| Spectral type | DA | DA | DAP | DAP | DAP | DAP | DA | DA | DAP | DAP11.1 | DAP | DAP | DA: | DA11P | DC9 | ||||||
| Effective temperature | [K] | 5140.0 (25) | 5006.9 (29) | 5205.0 (13) | 5126.5 (15) | 5150.0 (25) | 5210.0 (60) | 5135.0 (71) | 4500.0 (500) | 5170.0 (141) | 5135.0 | 5135.0 (71) | 5233.0 (13) | ||||||||
| log(g) | [cgs] | 7.82 (0.02) | 7.76 (0.09) | 7.88 (0.006) | 7.82 (0.01) | 7.84 (0.02) | 7.92 (0.03) | 8.00 (0) | 8.00 (0) | (0) | 7.88 (0.007) | ||||||||||
| Mass | [M☉] | 0.48 (0.01) | 0.4468199649659684 (0.09) | 0.511 (0.005) | 0.491 (0.009) | 0.53 (0.03) | 0.58 (0) | 0.58 (0.1) | 0.58 (0) | 0.515 (0.005) | |||||||||||
| log(Luminosity) | [L☉] | -3.93 (0.03) | -3.99 | -4.00 | |||||||||||||||||
| Cooling age | [Gyr] | 3.2100 | 3.1880 (0.2) | 3.6200 (0.5) | 4.9900 | 5.0000 | |||||||||||||||
| 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] | 50.06 (0.04) | 50.06 (0.04) | 49.97 (0.05) | 49.97 (0.05) | 49.97 (0.05) | 49.97 (0.05) | 50.81 (0.3) | 50.06 | 50.06 (0.04) | 49.97 (0.05) | ||||||||||
| Distance | [pc] | 19.97 (0.02) | 19.98 (0.02) | 20.01 (0.02) | 20.01 (0.02) | 20.01 (0.02) | 20.01 (0.02) | 19.68 (0.1) | 18.39 (0.2) | 18.60 (3) | 13.40 | 18.40 (0.5) | 13.40 | 19.97 | 19.97 (0.02) | 20.01 (0.02) | |||||
| Composition | H | H | H | H | H | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 42.26607736 (0.03) | 42.26942239 (0.06) | 42.266 (0.03) | 42.26942239 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -257.5390042 (0.03) | -257.587871 (0.06) | -257.539 (0.03) | -257.587871 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | yes | yes | yes | ||||||||||||||||||
| Bd | [MG] | 0.3 (0.2) | 0.125 * | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 17.07 | 16.40 | |||||||||||||||||||
| V magnitude | 16.22 | 16.38 | 16.28 | ||||||||||||||||||
| R magnitude | 15.81 | 15.60 | |||||||||||||||||||
| I magnitude | 15.32 | 15.78 | |||||||||||||||||||
| J magnitude | 14.81 (0.03) | 14.81 (0.03) | 14.81 (0.03) | 14.81 | 14.81 (0.03) | ||||||||||||||||
| H magnitude | 14.52 (0.04) | 14.52 (0.04) | 14.52 (0.04) | 14.52 | 14.52 (0.04) | ||||||||||||||||
| K magnitude | 14.38 (0.07) | 14.38 (0.07) | 14.39 (0.07) | 14.39 | 14.38 (0.07) | ||||||||||||||||
| u magnitude | |||||||||||||||||||||
| g magnitude | 16.54 (0.005) | ||||||||||||||||||||
| r magnitude | 15.97 (0.004) | ||||||||||||||||||||
| i magnitude | 15.75 (0.002) | ||||||||||||||||||||
| z magnitude | 15.68 (0.002) | ||||||||||||||||||||
| G magnitude | 16.00 (0.003) | 16.01 | 16.01 | 16.00 | 16.00 (0.003) | 16.01 | |||||||||||||||
| BP magnitude | 16.44 (0.003) | 16.46 | 16.46 | ||||||||||||||||||
| RP magnitude | 15.40 (0.002) | 15.41 | 15.41 | ||||||||||||||||||
| Pan g magnitude | 16.54 (0.005) | 16.54 (0.005) | 16.54 (0.005) | ||||||||||||||||||
| Pan r magnitude | 15.97 (0.003) | 15.97 (0.004) | 15.97 (0.004) | ||||||||||||||||||
| Pan i magnitude | 15.75 (0.002) | 15.75 (0.002) | 15.75 (0.002) | ||||||||||||||||||
| Pan z magnitude | 15.68 (0.001) | 15.68 (0.001) | 15.68 (0.001) | ||||||||||||||||||
| Pan y magnitude | 15.64 (0.005) | 15.64 (0.005) | 15.64 (0.005) | ||||||||||||||||||
| E(B-V) | 0.000 | ||||||||||||||||||||
* 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.