All names: Gaia DR3 4611543459874840832, PSO J269.2686+40.8814, WDJ175704.46+405249.39, Gaia DR2 4611543459874840832, TIC 159850736, 2MASS J17570447+4052492, NLTT 45723, PM J17570+4052, Gaia EDR3 4611543459874840832, LP 228-12, J1757+4052, LSPM J1757+4052, WD 1755+408, USNO-B1.0 1308-00292083, 17570+4052, SDSS J175704.46+405249.9
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Kawka et Vennes 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 17 57 04.49 (0.04) | 17 57 04.49 (0.06) | 17 57 04.49 (0.06) | 17 57 04.49 | 17 57 04.46 (0.04) | 17 57 04.49 | 17 57 03.96 | |||||||||||
Declination | 40 52 54.64 (0.05) | 40 52 54.47 (0.07) | 40 52 54.47 (0.07) | 40 52 54.64 | 40 52 49.39 (0.05) | 40 52 54.47 | 40 52 43.68 | |||||||||||
Spectral type | DC | DC | DC | DC | DC | DC | DC | DC | DC | DA | DC | DC9.3 | ||||||
Effective temperature | [K] | 5017.0 (16) | 5337.0 (91) | 5258.0 (16) | 5378.1 (51) | 5180.0 (60) | 5504.0 | 5224.0 | 5920.0 (67) | 5400.0 (600) | 5749.0 (32) | |||||||
log(g) | [cgs] | 7.76 (0.009) | 7.98 (0.06) | 7.95 (0.008) | 8.02 (0.04) | 7.91 (0.03) | 8.11 | 7.93 | 8.00 (0) | 8.00 | 8.21 (0.01) | |||||||
Mass | [M☉] | 0.435 (0.007) | 0.555 (0.04) | 0.537 (0.007) | 0.518 (0.02) | 0.651 | 0.525 | 0.59 (0.1) | 0.57 | 0.719 (0.01) | ||||||||
log(Luminosity) | [L☉] | -3.75 | ||||||||||||||||
Cooling age | [Gyr] | 4.5900 | 4.3700 (0.3) | 4.1520 | 4.3140 | |||||||||||||
log(H/He) | -5.0 | |||||||||||||||||
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] | 32.30 (0.05) | 32.30 (0.05) | 32.30 (0.07) | 32.30 (0.07) | 32.30 (0.07) | 32.30 (0.07) | 32.30 | 32.30 (0.05) | 32.30 (0.07) | ||||||||
Distance | [pc] | 30.96 (0.05) | 30.96 (0.05) | 30.96 (0.07) | 30.96 (0.07) | 30.96 (0.07) | 30.96 (0.07) | 38.70 (6) | 33.00 | 30.96 | 30.96 (0.05) | 30.96 (0.07) | ||||||
Composition | He | He | He | H | ||||||||||||||
Proper motion (right ascension) | [mas/yr] | 17.66575084 (0.06) | 17.70924354 (0.1) | 17.666 (0.06) | 17.70924354 | |||||||||||||
Proper motion (declination) | [mas/yr] | 327.6069352 (0.07) | 327.7209525 (0.1) | 327.607 (0.07) | 327.7209525 | |||||||||||||
Variability | ||||||||||||||||||
Magnetic | ||||||||||||||||||
Bd | [MG] | |||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||
Binarity | ||||||||||||||||||
B magnitude | 17.20 | |||||||||||||||||
V magnitude | ||||||||||||||||||
R magnitude | 16.80 | |||||||||||||||||
I magnitude | ||||||||||||||||||
J magnitude | 15.95 (0.01) | 15.92 (0.07) | 15.92 (0.07) | |||||||||||||||
H magnitude | 15.88 (0.1) | 15.88 (0.1) | 15.88 (0.1) | |||||||||||||||
K magnitude | 15.82 (0.2) | 15.82 (0.2) | 15.82 (0.2) | |||||||||||||||
u magnitude | 18.51 (0.02) | 18.49 (0.02) | 18.49 (0.02) | |||||||||||||||
g magnitude | 17.44 (0.003) | 17.46 (0.005) | ||||||||||||||||
r magnitude | 16.99 (0.004) | 16.97 (0.005) | ||||||||||||||||
i magnitude | 16.79 (0.004) | 16.77 (0.005) | ||||||||||||||||
z magnitude | 16.75 (0.005) | 16.69 (0.01) | ||||||||||||||||
G magnitude | 16.99 (0.01) | 17.00 | 17.00 | 16.99 | 16.99 (0.003) | 17.00 | ||||||||||||
BP magnitude | 17.32 (0.01) | 17.35 | 17.35 | |||||||||||||||
RP magnitude | 16.37 (0.01) | 16.40 | 16.40 | |||||||||||||||
Pan g magnitude | 17.44 (0.003) | 17.44 (0.003) | 17.44 (0.003) | |||||||||||||||
Pan r magnitude | 16.99 (0.004) | 16.99 (0.004) | 16.99 (0.004) | |||||||||||||||
Pan i magnitude | 16.79 (0.003) | 16.79 (0.004) | 16.79 (0.004) | |||||||||||||||
Pan z magnitude | 16.75 (0.006) | 16.75 (0.006) | 16.75 (0.006) | |||||||||||||||
Pan y magnitude | 16.76 (0.02) | 16.76 (0.02) | 16.75 (0.02) | |||||||||||||||
E(B-V) | 0.003 |
* 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.