All names: PM J15555+5025, SDSS J155534.18+502547.8, GALEX J155534.1+502547, PSO J238.8910+50.4299, LP 177-168, LSPM J1555+5025, SDSS J155534.17+502547.8, Gaia EDR3 1403348682426861568, WD 1554+505, WDJ155534.21+502547.74, J1555+5025, Gaia DR2 1403348682426861568, TIC 310166944, 2MASS J15553422+5025478, 15555+5025, USNO-B1.0 1404-00270162, Gaia DR3 1403348682426861568, GD 353, SDSS J155534.17+502547.7
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 15 55 33.82 (0.03) | 15 55 33.83 (0.04) | 15 55 33.83 (0.04) | 15 55 33.82 | 15 55 34.21 (0.03) | 15 55 33.83 | 15 55 33.50 | ||||||||||
Declination | 50 25 47.65 (0.04) | 50 25 47.66 (0.05) | 50 25 47.66 (0.05) | 50 25 47.65 | 50 25 47.74 (0.04) | 50 25 47.66 | 50 25 43.68 | ||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA8.1 | ||||||
Effective temperature | [K] | 6187.0 (14) | 6103.0 (41) | 6161.0 (11) | 6186.0 (14) | 6072.8 (44) | 6075.0 (35) | 6117.0 | 6190.0 (105) | 6193.0 (25) | |||||||
log(g) | [cgs] | 8.06 (0.005) | 8.03 (0.02) | 8.05 (0.004) | 8.06 (0.005) | 8.01 (0.02) | 8.02 (0.02) | 8.03 | 7.62 (0.2) | 8.06 (0.008) | |||||||
Mass | [M☉] | 0.628 (0.004) | 0.606 (0.01) | 0.62 (0.004) | 0.626 (0.004) | 0.601 (0.01) | 0.609 | 0.39 (0.08) | 0.629 (0.007) | ||||||||
log(Luminosity) | [L☉] | -3.47 | |||||||||||||||
Cooling age | [Gyr] | 2.3800 | 2.2680 (0.09) | 2.2880 | |||||||||||||
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] | 32.76 (0.04) | 32.76 (0.04) | 32.70 (0.05) | 32.70 (0.05) | 32.70 (0.05) | 32.70 (0.05) | 32.76 | 32.76 (0.04) | 32.70 (0.05) | |||||||
Distance | [pc] | 30.53 (0.03) | 30.53 (0.04) | 30.58 (0.05) | 30.58 (0.04) | 30.58 (0.04) | 30.58 (0.04) | 40.20 (1) | 30.53 | 30.53 (0.03) | 30.58 (0.04) | ||||||
Composition | H | H | H | H | H | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | -233.7485449 (0.04) | -233.844881 (0.09) | -233.749 (0.04) | -233.844881 | ||||||||||||
Proper motion (declination) | [mas/yr] | -5.414685773 (0.05) | -5.435821671 (0.1) | -5.415 (0.05) | -5.435821671 | ||||||||||||
Variability | |||||||||||||||||
Magnetic | |||||||||||||||||
Bd | [MG] | ||||||||||||||||
Infrared excess (disk) | |||||||||||||||||
Binarity | |||||||||||||||||
B magnitude | 16.00 | ||||||||||||||||
V magnitude | |||||||||||||||||
R magnitude | 16.50 | ||||||||||||||||
I magnitude | |||||||||||||||||
J magnitude | 15.55 (0.008) | 15.51 (0.06) | 15.51 (0.06) | ||||||||||||||
H magnitude | 15.04 (0.09) | 15.04 (0.09) | 15.04 (0.09) | ||||||||||||||
K magnitude | 15.03 (0.1) | 15.03 (0.1) | 15.03 (0.1) | ||||||||||||||
u magnitude | 17.55 (0.01) | 17.53 (0.01) | 17.53 (0.01) | 17.45 | |||||||||||||
g magnitude | 16.72 (0.002) | 16.75 (0.004) | 16.70 | ||||||||||||||
r magnitude | 16.42 (0.002) | 16.41 (0.004) | 16.39 | ||||||||||||||
i magnitude | 16.30 (0.003) | 16.29 (0.004) | 16.26 | ||||||||||||||
z magnitude | 16.30 (0.004) | 16.28 (0.007) | 16.26 | ||||||||||||||
G magnitude | 16.41 (0.004) | 16.42 | 16.42 | 16.41 | 16.41 (0.003) | 16.42 | |||||||||||
BP magnitude | 16.70 (0.004) | 16.70 | 16.70 | ||||||||||||||
RP magnitude | 15.97 (0.003) | 15.97 | 15.97 | ||||||||||||||
Pan g magnitude | 16.72 (0.002) | 16.72 (0.002) | 16.72 (0.002) | ||||||||||||||
Pan r magnitude | 16.42 (0.002) | 16.42 (0.002) | 16.42 (0.002) | ||||||||||||||
Pan i magnitude | 16.30 (0.002) | 16.30 (0.003) | 16.30 (0.003) | ||||||||||||||
Pan z magnitude | 16.30 (0.004) | 16.30 (0.004) | 16.30 (0.004) | ||||||||||||||
Pan y magnitude | 16.32 (0.004) | 16.32 (0.004) | 16.32 (0.004) | ||||||||||||||
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.