All names: ULAS J074509.02+262705.0, Gaia EDR3 874900643675606912, Gaia DR3 874900643675606912, WISEP J074509.38+262659.1, WDJ074508.95+262706.45, 0742+265, LSR J0745+2627, PM J07451+2627, USNO-B1.0 1164-00146175, J0745+2626, SDSS J074509.02+262705.0, SDSS J074509.03+262705.0, Gaia DR2 874900643675606912, 07451+2627, LSPM J0745+2627
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Leggett et al. 2018 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 45 09.58 (0.2) | 07 45 09.56 (0.3) | 07 45 09.56 (0.3) | 07 45 09.58 | 07 45 08.95 (0.2) | 07 45 09.56 | ||||||||
| Declination | 26 26 54.94 (0.2) | 26 26 55.30 (0.3) | 26 26 55.30 (0.3) | 26 26 54.94 | 26 27 06.46 (0.2) | 26 26 55.30 | ||||||||
| Spectral type | DC | DC | DC | DC | DC | DA | DC | |||||||
| Effective temperature | [K] | 3625.0 (33) | 3789.0 (525) | 4028.0 (13) | 3633.9 (711) | 3620.0 (144) | 3720.0 (220) | |||||||
| log(g) | [cgs] | 7.65 (0.02) | 7.78 (0.4) | 7.93 (0.02) | 7.69 (0.5) | 8.00 (0) | 7.70 (0.1) | |||||||
| Mass | [M☉] | 0.386 (0.01) | 0.462 (0.2) | 0.533 (0.01) | 0.58 (0.1) | 0.409 (0.08) | ||||||||
| log(Luminosity) | [L☉] | -4.61 | ||||||||||||
| Cooling age | [Gyr] | 8.5800 | ||||||||||||
| 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] | 25.54 (0.2) | 25.54 (0.2) | 25.28 (0.4) | 25.28 (0.4) | 26.34 (0.2) | 25.28 (0.4) | 25.54 | 25.54 (0.2) | 25.28 (0.4) | ||||
| Distance | [pc] | 39.16 (0.4) | 39.15 (0.4) | 39.56 (0.6) | 39.55 (0.6) | 37.97 (0.2) | 39.55 (0.6) | 32.30 (4) | 39.16 | 39.16 (0.4) | 39.55 (0.6) | |||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 530.4360224 (0.2) | 529.6925939 (0.5) | 530.436 (0.2) | 529.6925939 | |||||||||
| Proper motion (declination) | [mas/yr] | -719.861295 (0.2) | -719.1860652 (0.4) | -719.861 (0.2) | -719.1860652 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 20.10 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.60 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 17.11 (0.01) | 17.12 (0.01) | ||||||||||||
| H magnitude | 17.09 (0.05) | 17.09 (0.05) | ||||||||||||
| K magnitude | 17.18 (0.08) | 17.18 (0.08) | ||||||||||||
| u magnitude | 21.86 (0.2) | 22.06 | 22.65 (0.2) | 22.65 (0.2) | ||||||||||
| g magnitude | 19.98 | 19.99 (0.02) | 19.99 (0.02) | |||||||||||
| r magnitude | 18.74 | 18.69 (0.009) | 18.69 (0.009) | |||||||||||
| i magnitude | 18.18 | 18.23 (0.01) | 18.23 (0.01) | |||||||||||
| z magnitude | 17.98 | 17.96 (0.02) | 17.96 (0.02) | |||||||||||
| G magnitude | 18.71 (0.08) | 18.75 | 18.75 | 18.71 | 18.71 (0.004) | 18.75 | ||||||||
| BP magnitude | 19.42 (0.08) | 19.51 | 19.51 | |||||||||||
| RP magnitude | 17.87 (0.03) | 17.91 | 17.91 | |||||||||||
| Pan g magnitude | 19.77 (0.004) | 19.77 (0.004) | ||||||||||||
| Pan r magnitude | 18.71 (0.006) | 18.71 (0.005) | ||||||||||||
| Pan i magnitude | 18.21 (0.001) | 18.21 (0.001) | ||||||||||||
| Pan z magnitude | 18.04 (0.01) | 18.04 (0.01) | ||||||||||||
| Pan y magnitude | 17.96 (0.02) | 17.96 (0.01) | ||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* 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.