All names: WD 0747+073.1, Gaia DR3 3144837318276010624, NLTT 18505, EGGR 426, J0750+0711, LP 543-32, USNO 828, USNO-B1.0 0971-00181641, 2MASS J07501457+0711490, PM J07502+0711N, WDJ075014.58+071148.92, Gaia DR2 3144837318276010624, LSPM J0750+0711N, 07502+0711S, LP 542-32, Gaia DR3 3144837112115126400, WISEA J075014.73+071130.2, GJ 1102 B, Gaia EDR3 3144837112115126400, WDJ075015.34+071137.10, TIC 220590402, ** LDS 3765B, CNS5 1927, WDS J07503+0713B, LHS 239
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Gaia DR2 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Giammichele et al. 2012 | Holberg et al. 2008 | Bergeron et al. 2001 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 50 15.57 (0.05) | 07 50 15.56 (0.05) | 07 50 14.80 (0.06) | 07 50 15.57 | 07 50 14.58 (0.06) | 07 50 14.80 | 07 50 17.33 | |||||||||||
| Declination | 07 11 08.45 (0.04) | 07 11 09.35 (0.03) | 07 11 21.29 (0.04) | 07 11 08.45 | 07 11 48.92 (0.04) | 07 11 21.29 | 07 13 03.36 | |||||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | DC | DC: | DC9 | DC9 | |||||||
| Effective temperature | [K] | 4680.0 (30) | 4354.0 (17) | 4648.7 (17) | 4354.0 (40) | 4390.0 (92) | 4366.0 (84) | 4210.0 (90) | 4170.0 (80) | 4760.0 (20) | ||||||||
| log(g) | [cgs] | 7.89 (0.03) | 7.83 (0.01) | 7.88 (0.01) | 7.84 (0.04) | 7.84 (0.02) | 7.83 (0.02) | 7.69 (0.03) | 7.65 (0.02) | 7.96 (0.009) | ||||||||
| Mass | [M☉] | 0.515 (0.01) | 0.478 (0.008) | 0.5 (0.02) | 0.48 (0.01) | 0.48 (0.01) | 0.4 (0.01) | 0.39 (0.01) | 0.551 (0.008) | |||||||||
| log(Luminosity) | [L☉] | -4.19 | -4.20 | -4.19 (0.01) | -4.19 (0.01) | |||||||||||||
| Cooling age | [Gyr] | 6.7700 | 6.3000 | 6.2000 | 5.2700 (0.2) | 4.7200 (0.2) | ||||||||||||
| 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] | 55.10 (0.06) | 55.10 (0.06) | 54.93 (0.07) | 55.14 (0.06) | 54.93 (0.07) | 54.70 (0.7) | 54.70 (0.7) | 54.70 (0.7) | 54.70 (0.7) | 54.70 (0.7) | 54.70 (0.7) | 55.10 | 54.97 (0.06) | 54.93 (0.07) | 53.60 (1) | ||
| Distance | [pc] | 18.15 (0.02) | 18.15 (0.02) | 18.20 (0.02) | 18.14 (0.02) | 18.20 (0.02) | 18.28 (0.2) | 18.30 (2) | 18.30 (0.2) | 18.25 | 18.28 (0.2) | 18.28 (0.2) | 18.15 | 18.19 (0.02) | 18.20 (0.02) | 18.66 (0.3) | ||
| Composition | H | H | H | H | He | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 209.9102877 (0.07) | 211.5427204 (0.1) | 211.52 (0.07) | 211.5427204 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -1790.495846 (0.04) | -1782.658423 (0.08) | -1782.618 (0.05) | -1782.658423 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | DDr | DDr | ||||||||||||||||
| B magnitude | 18.17 | 18.17 | 18.17 | 17.90 | ||||||||||||||
| V magnitude | 16.99 | 16.96 | 16.96 | 16.96 | ||||||||||||||
| R magnitude | 16.31 | 16.31 | 16.31 | 16.20 | ||||||||||||||
| I magnitude | 15.70 | 15.70 | 15.70 | |||||||||||||||
| J magnitude | 15.03 (0.04) | 15.05 | 15.05 | 15.05 | 15.03 (0.04) | |||||||||||||
| H magnitude | 14.90 (0.08) | 14.90 | 14.90 | 14.90 | 14.90 (0.08) | |||||||||||||
| K magnitude | 14.75 (0.1) | 14.86 | 14.86 | 14.86 | 14.75 (0.1) | |||||||||||||
| u magnitude | 19.73 (0.03) | 19.73 (0.04) | ||||||||||||||||
| g magnitude | 17.62 (0.005) | |||||||||||||||||
| r magnitude | 16.56 (0.004) | |||||||||||||||||
| i magnitude | 16.17 (0.004) | |||||||||||||||||
| z magnitude | 16.00 (0.007) | |||||||||||||||||
| G magnitude | 16.34 (0.005) | 16.36 | 16.61 | 16.34 | 16.59 (0.003) | 16.61 | ||||||||||||
| BP magnitude | 16.89 (0.005) | 17.25 | 17.25 | |||||||||||||||
| RP magnitude | 15.66 (0.003) | 15.84 | 15.84 | |||||||||||||||
| Pan g magnitude | 17.44 (0.007) | 17.44 (0.007) | ||||||||||||||||
| Pan r magnitude | 16.57 (0.002) | 16.57 (0.002) | ||||||||||||||||
| Pan i magnitude | 16.18 (0.005) | 16.18 (0.005) | ||||||||||||||||
| Pan z magnitude | 16.05 (0.006) | 16.05 (0.006) | ||||||||||||||||
| Pan y magnitude | 16.00 (0.01) | 16.00 (0.01) | ||||||||||||||||
| 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.