All names: J1452+4522, SDSS J145239.01+452238.3, Gaia DR2 1586838374030594048, Gaia EDR3 1586838374030594048, WD 1450+455, SDSS J145239.00+452238.3, EQ J1452+4522, WDJ145239.02+452238.09, Gaia DR3 1586838374030594048
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 14 52 38.94 (0.2) | 14 52 39.00 | 14 52 38.94 (0.2) | 14 52 38.94 | 14 52 39.02 (0.2) | 14 52 38.94 | 14 52 38.50 | ||||||||
Declination | 45 22 39.20 (0.2) | 45 22 38.34 | 45 22 39.17 (0.3) | 45 22 39.20 | 45 22 38.09 (0.2) | 45 22 39.17 | 45 22 34.32 | ||||||||
Spectral type | DC | DC | DC | DC | DA: | DC | DC | DA: | |||||||
Effective temperature | [K] | 5204.0 (58) | 5521.0 (47) | 5837.0 | 5615.0 | 5622.0 (146) | |||||||||
log(g) | [cgs] | 8.04 (0.04) | 8.18 (0.03) | 8.33 | 8.20 | 8.25 (0.06) | |||||||||
Mass | [M☉] | 0.596 (0.03) | 0.685 (0.03) | 0.798 | 0.697 | 0.746 (0.06) | |||||||||
log(Luminosity) | [L☉] | ||||||||||||||
Cooling age | [Gyr] | 5.5300 | 4.8490 | 5.0980 | |||||||||||
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] | 10.96 (0.2) | 10.69 (0.3) | 10.69 (0.3) | 10.96 | 10.96 (0.2) | 10.69 (0.3) | ||||||||
Distance | [pc] | 91.21 (2) | 93.55 (3) | 93.55 (3) | 91.21 | 91.21 (2) | 93.55 (3) | ||||||||
Composition | He | He | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -52.71205618 (0.2) | -54.11105047 (0.5) | -52.712 (0.2) | -54.11105047 | ||||||||||
Proper motion (declination) | [mas/yr] | 69.96297839 (0.3) | 69.8358372 (0.6) | 69.963 (0.3) | 69.8358372 | ||||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | |||||||||||||||
B magnitude | |||||||||||||||
V magnitude | 19.68 (0.03) | ||||||||||||||
R magnitude | |||||||||||||||
I magnitude | |||||||||||||||
J magnitude | 18.60 (0.02) | 18.60 (0.02) | |||||||||||||
H magnitude | 18.43 (0.02) | 18.43 (0.02) | |||||||||||||
K magnitude | 18.37 (0.02) | 18.37 (0.02) | |||||||||||||
u magnitude | 21.64 (0.1) | 21.57 (0.2) | 21.64 (0.1) | 21.64 (0.1) | 21.55 | ||||||||||
g magnitude | 20.01 (0.02) | 20.01 (0.02) | 20.01 (0.02) | 20.06 | |||||||||||
r magnitude | 19.36 (0.01) | 19.36 (0.01) | 19.36 (0.01) | 19.39 | |||||||||||
i magnitude | 19.27 (0.02) | 19.28 (0.02) | 19.28 (0.02) | 19.31 | |||||||||||
z magnitude | 19.31 (0.06) | 19.31 (0.06) | 19.31 (0.06) | 19.38 | |||||||||||
G magnitude | 19.47 (0.06) | 19.52 | 19.47 | 19.47 (0.004) | 19.52 | ||||||||||
BP magnitude | 19.86 (0.06) | 19.76 | 19.76 | ||||||||||||
RP magnitude | 18.97 (0.04) | 18.91 | 18.91 | ||||||||||||
Pan g magnitude | 19.88 (0.01) | 19.88 (0.01) | |||||||||||||
Pan r magnitude | 19.33 (0.01) | 19.33 (0.01) | |||||||||||||
Pan i magnitude | 19.30 (0.007) | 19.30 (0.009) | |||||||||||||
Pan z magnitude | 19.34 (0.01) | 19.34 (0.01) | |||||||||||||
Pan y magnitude | 19.41 (0.04) | 19.41 (0.05) | |||||||||||||
E(B-V) | 0.011 |
* 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.