All names: 025245.61-752244.56, Gaia EDR3 4640029027306103296, TIC 426018482, SCR J0252-7522, 2MASS J02524573-7522443, WD 0253-755, Gaia DR2 4640029027306103296, WISE J025246.82-752242.0, Gaia DR3 4640029027306103296, SCR 0252-7522, WDJ025245.61-752244.56
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | O'Brien et al. 2022 | Gaia DR2 | Stilism | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 52 47.54 (0.04) | 02 52 47.48 (0.04) | 02 52 45.64 | 02 52 47.54 | 02 52 45.61 (0.04) | 02 52 47.48 | 02 52 44.02 | ||||
| Declination | -75 22 40.92 (0.04) | -75 22 41.03 (0.04) | -75 22 44.50 | -75 22 40.92 | -75 22 44.56 (0.04) | -75 22 41.03 | -75 22 37.56 | ||||
| Spectral type | DAH | DAH | DC | DC: | DC | DA? | |||||
| Effective temperature | [K] | 6204.0 (52) | 6080.0 (50) | 6235.0 (253) | 5257.0 (62) | ||||||
| log(g) | [cgs] | 8.15 (0.02) | 8.07 (0.03) | 7.86 (0.01) | |||||||
| Mass | [M☉] | 0.684 (0.01) | 0.488 (0.009) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| 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] | 32.05 (0.04) | 32.05 (0.04) | 32.05 (0.04) | 32.06 (0.05) | 32.05 | 32.05 (0.04) | 32.06 (0.05) | |||
| Distance | [pc] | 31.20 (0.04) | 31.20 (0.04) | 31.20 (0.04) | 31.19 (0.04) | 34.70 | 31.20 | 31.20 (0.04) | 31.19 (0.04) | ||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 454.5589006 (0.05) | 454.4702871 (0.09) | 454.559 (0.05) | 454.4702871 | ||||||
| Proper motion (declination) | [mas/yr] | 227.7107085 (0.05) | 227.7905812 (0.08) | 227.711 (0.05) | 227.7905812 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | 16.70 | ||||||||||
| R magnitude | 16.39 | ||||||||||
| I magnitude | 16.08 | ||||||||||
| J magnitude | 15.77 (0.07) | 15.78 (0.07) | |||||||||
| H magnitude | 15.76 (0.1) | 15.76 (0.1) | |||||||||
| K magnitude | 15.34 | ||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 16.57 (0.004) | 16.59 | 16.57 | 16.57 (0.003) | 16.59 | ||||||
| BP magnitude | 16.84 (0.004) | 16.83 | 16.83 | ||||||||
| RP magnitude | 16.14 (0.005) | 16.15 | 16.15 | ||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| 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.