All names: GALEX J025301.5-013006, SDSS J025301.60-013006.9, [HH86] 0250-017, 2MASS J02530161-0130065, Gaia DR2 5187572001027818240, SDSS J025301.60-013006.95, TIC 439867948, WD 0250-017, SDSS J025301.61-013006.8, LAMOST J025301.60-013006.8, HBQS 0250-0142, PB 6914, US 3270, SDSS J025301.60-013006.8, Gaia EDR3 5187572001027818240, Gaia DR3 5187572001027818240
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 53 01.59 (0.08) | 02 53 01.61 | 02 53 01.61 | 02 53 01.59 (0.1) | 02 53 01.59 | 02 53 01.62 (0.08) | 02 53 01.46 | ||||||
| Declination | -01 30 07.10 (0.07) | -01 30 06.87 | -01 30 06.87 | -01 30 07.08 (0.1) | -01 30 07.10 | -01 30 06.55 (0.07) | -01 30 04.32 | ||||||
| Spectral type | DA+M | DA+M4 | DA | DA+dM | DA | DA+MS | |||||||
| Effective temperature | [K] | 29727.0 (107) | |||||||||||
| log(g) | [cgs] | 7.64 (0.04) | |||||||||||
| Mass | [M☉] | 0.521 (0.007) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | ||||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 2.56 (0.09) | 2.46 (0.1) | 2.56 | 2.56 (0.09) | ||||||||
| Distance | [pc] | 390.24 (14) | 405.70 (18) | 390.24 | 390.24 (14) | ||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -27.04237339 (0.1) | -27.23370104 (0.2) | -27.042 (0.1) | |||||||||
| Proper motion (declination) | [mas/yr] | -34.44281124 (0.09) | -34.46618897 (0.2) | -34.443 (0.09) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | ||||||||||||
| B magnitude | 17.40 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.29 (0.1) | ||||||||||||
| H magnitude | 15.89 (0.1) | ||||||||||||
| K magnitude | 15.34 (0.1) | ||||||||||||
| u magnitude | 17.29 (0.009) | 17.29 (0.009) | 17.29 (0.02) | 17.29 (0.009) | |||||||||
| g magnitude | 17.37 (0.005) | 17.36 (0.005) | 17.39 (0.02) | 17.37 (0.005) | |||||||||
| r magnitude | 17.66 (0.006) | 17.66 (0.006) | 17.66 (0.01) | 17.66 (0.006) | |||||||||
| i magnitude | 17.62 (0.007) | 17.63 (0.007) | 17.62 (0.01) | 17.62 (0.007) | |||||||||
| z magnitude | 17.39 (0.01) | 17.39 (0.01) | 17.38 (0.02) | 17.39 (0.01) | |||||||||
| G magnitude | 17.41 (0.02) | 17.44 | 17.41 | 17.41 (0.003) | |||||||||
| BP magnitude | 17.42 (0.02) | 17.40 | |||||||||||
| RP magnitude | 17.24 (0.01) | 17.24 | |||||||||||
| Pan g magnitude | 17.38 (0.004) | ||||||||||||
| Pan r magnitude | 17.65 (0.004) | ||||||||||||
| Pan i magnitude | 17.67 (0.01) | ||||||||||||
| Pan z magnitude | 17.45 (0.007) | ||||||||||||
| Pan y magnitude | 17.29 (0.02) | ||||||||||||
| E(B-V) | 0.030 | ||||||||||||
* 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.