All names: Gaia DR2 1710386067532886272, USNO-B1.0 1706-00050470, Gaia EDR3 1710386067532886272, LP 9-175, WD 1643+807, J1639+8038, Gaia DR3 1710386067532886272, EGGR 493, LHS 3231, NLTT 43492, WDJ163927.83+803845.10, LSPM J1639+8038
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | 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) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 39 26.78 (0.1) | 16 39 26.81 (0.2) | 16 39 26.78 | 16 39 27.83 (0.1) | 16 39 26.81 | 16 39 09.67 | ||||||
Declination | 80 38 51.87 (0.1) | 80 38 51.66 (0.1) | 80 38 51.87 | 80 38 45.10 (0.1) | 80 38 51.66 | 80 39 21.96 | ||||||
Spectral type | DC | DC9 | DC9 | DA | DC9 | DC9 | ||||||
Effective temperature | [K] | 5504.0 (73) | 5932.0 | 5695.0 | 5979.0 (98) | |||||||
log(g) | [cgs] | 8.08 (0.03) | 8.32 | 8.19 | 8.32 (0.03) | |||||||
Mass | [M☉] | 0.617 (0.03) | 0.791 | 0.688 | 0.793 (0.03) | |||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 4.8100 | 4.5710 | 4.7920 | ||||||||
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] | 16.46 (0.1) | 16.55 (0.1) | 16.55 (0.1) | 16.46 | 16.46 (0.1) | 16.55 (0.1) | |||||
Distance | [pc] | 60.74 (0.4) | 60.42 (0.5) | 60.44 (0.5) | 60.74 | 60.74 (0.4) | 60.44 (0.5) | |||||
Composition | He | |||||||||||
Proper motion (right ascension) | [mas/yr] | -160.3873107 (0.2) | -160.8004928 (0.3) | -160.387 (0.2) | -160.8004928 | |||||||
Proper motion (declination) | [mas/yr] | 422.9085755 (0.2) | 422.9016766 (0.3) | 422.909 (0.2) | 422.9016766 | |||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | 19.60 | |||||||||||
V magnitude | ||||||||||||
R magnitude | 18.80 | |||||||||||
I magnitude | ||||||||||||
J magnitude | ||||||||||||
H magnitude | ||||||||||||
K magnitude | ||||||||||||
u magnitude | ||||||||||||
g magnitude | ||||||||||||
r magnitude | ||||||||||||
i magnitude | ||||||||||||
z magnitude | ||||||||||||
G magnitude | 18.43 (0.03) | 18.45 | 18.43 | 18.43 (0.003) | 18.45 | |||||||
BP magnitude | 18.75 (0.03) | 18.72 | 18.72 | |||||||||
RP magnitude | 17.97 (0.02) | 17.96 | 17.96 | |||||||||
Pan g magnitude | 18.78 (0.02) | 18.78 (0.03) | ||||||||||
Pan r magnitude | 18.42 (0.005) | 18.42 (0.005) | ||||||||||
Pan i magnitude | 18.32 (0.006) | 18.32 (0.007) | ||||||||||
Pan z magnitude | 18.28 (0.01) | 18.28 (0.01) | ||||||||||
Pan y magnitude | 18.16 (0.3) | 18.16 (0.03) | ||||||||||
E(B-V) | 0.006 |
* 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.