All names: SDSS J152116.07+245016.4, Gaia DR2 1264032106692156288, TIC 357521461, LAMOST J152116.08+245016.4, WISEA J152116.06+245016.4, Gaia DR3 1264032106692156288, UCAC4 575-051790, Gaia EDR3 1264032106692156288, WISE J152116.07+245016.5, SDSS J152116.07+245016.3, 2MASS J15211608+2450165, SDSS J152116.07+245016.33, GALEX J152116.0+245016
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 21 16.06 (0.5) | 15 21 16.08 | 15 21 16.06 (0.4) | 15 21 16.10 (0.5) | |||||
| Declination | 24 50 16.29 (0.5) | 24 50 16.48 | 24 50 16.30 (0.6) | 24 50 16.72 (0.5) | |||||
| Spectral type | DA+M | DA+M2 | DA+M2 | ||||||
| Effective temperature | [K] | 32696.0 (567) | 37424.0 (314) | ||||||
| log(g) | [cgs] | 7.48 (0.1) | 7.98 (0.05) | ||||||
| Mass | [M☉] | 0.43 (0.04) | 0.647 (0.02) | ||||||
| log(Luminosity) | [L☉] | -0.39 (0.09) | |||||||
| Cooling age | [Gyr] | 0.0035 (0.002) | |||||||
| 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] | 2.02 (0.7) | 2.02 (0.7) | ||||||
| Distance | [pc] | 496.25 (182) | 496.25 (182) | ||||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -38.37027793 (0.7) | -38.37 (0.7) | ||||||
| Proper motion (declination) | [mas/yr] | -27.42699629 (0.7) | -27.427 (0.7) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.05 (0.03) | ||||||||
| H magnitude | 13.34 (0.03) | ||||||||
| K magnitude | 13.08 (0.03) | ||||||||
| u magnitude | 16.95 (0.007) | 16.98 (0.02) | 16.95 (0.007) | ||||||
| g magnitude | 16.96 (0.004) | 17.04 (0.02) | 16.96 (0.004) | ||||||
| r magnitude | 16.60 (0.005) | 16.61 (0.01) | 16.60 (0.005) | ||||||
| i magnitude | 15.86 (0.005) | 15.85 (0.02) | 15.86 (0.005) | ||||||
| z magnitude | 15.35 (0.005) | 15.34 (0.02) | 15.35 (0.005) | ||||||
| G magnitude | 16.47 (0.005) | 16.34 | 16.47 (0.009) | ||||||
| BP magnitude | 16.83 (0.005) | 16.81 | |||||||
| RP magnitude | 15.43 (0.002) | 15.45 | |||||||
| Pan g magnitude | 16.95 (0.007) | ||||||||
| Pan r magnitude | 16.57 (0.003) | ||||||||
| Pan i magnitude | 15.86 (0.003) | ||||||||
| Pan z magnitude | 15.42 (0.005) | ||||||||
| Pan y magnitude | 15.20 (0.004) | ||||||||
| E(B-V) | 0.046 | ||||||||
* 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.