All names: J1452+6020, SDSS J145236.58+602036.3, SDSS J145236.57+602036.4, GALEX J145236.6+602035, Gaia DR2 1617584636152648448, SDSS J145236.57+602036.3, Gaia DR3 1617584636152648448, WD 1451+605, Gaia EDR3 1617584636152648448, SDSS J145236.58+602036.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Liebert et al. 2003 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 52 36.43 (0.2) | 14 52 36.58 | 14 52 36.58 | 14 52 36.44 (0.3) | 14 52 36.58 (0.2) | 14 52 36.59 | 14 52 35.42 | 14 52 36.57 | |||||
| Declination | 60 20 36.78 (0.2) | 60 20 36.36 | 60 20 36.32 | 60 20 36.77 (0.3) | 60 20 36.32 (0.2) | 60 20 36.40 | 60 20 29.04 | 60 20 36.37 | |||||
| Spectral type | DQ | DQ | DQ | DQhot | DQ;CI | DQ_CI | hotDQ | ||||||
| Effective temperature | [K] | 12572.0 (659) | 16000.0 | 13211.0 (274) | 13312.0 (285) | ||||||||
| log(g) | [cgs] | 8.65 | 8.84 (0.2) | 9.86 (0.1) | |||||||||
| Mass | [M☉] | 1.0002 | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 1.0000 | |||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | -1.7259 (0.4) | ||||||||||||
| 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] | 4.45 (0.2) | 4.18 | 4.18 (0.3) | 4.45 (0.2) | ||||||||
| Distance | [pc] | 224.90 (12) | 239.19 (20) | 239.19 (20) | 224.90 (12) | ||||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -66.88958297 (0.3) | -66.98723273 (0.7) | -66.89 (0.3) | -66.4 | ||||||||
| Proper motion (declination) | [mas/yr] | 29.09108623 (0.3) | 29.3016152 (0.6) | 29.091 (0.3) | 33.6 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.42 (0.03) | 19.42 (0.03) | 19.45 (0.03) | 19.41 | 19.44 (0.03) | ||||||||
| g magnitude | 19.48 (0.01) | 19.48 (0.01) | 19.48 (0.02) | 19.47 | 19.47 (0.02) | ||||||||
| r magnitude | 19.75 (0.02) | 19.75 (0.02) | 19.74 (0.02) | 19.73 | 19.74 (0.02) | ||||||||
| i magnitude | 20.02 (0.03) | 20.02 (0.03) | 20.02 (0.03) | 20.01 | 20.03 (0.03) | ||||||||
| z magnitude | 20.38 (0.1) | 20.38 (0.1) | 20.35 (0.1) | 20.37 | 20.37 (0.1) | ||||||||
| G magnitude | 19.58 (0.03) | 19.64 | 19.58 (0.004) | ||||||||||
| BP magnitude | 19.49 (0.03) | 19.51 | |||||||||||
| RP magnitude | 19.82 (0.07) | 19.59 | |||||||||||
| Pan g magnitude | 19.50 (0.008) | ||||||||||||
| Pan r magnitude | 19.79 (0.008) | ||||||||||||
| Pan i magnitude | 20.02 (0.03) | ||||||||||||
| Pan z magnitude | 20.20 (0.04) | ||||||||||||
| Pan y magnitude | 19.69 (0.3) | ||||||||||||
| E(B-V) | 0.017 | ||||||||||||
* 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.