All names: TIC 67378262, LSPM J0804+2239, 2MASS J08044064+2239502, SDSS J080440.63+223948.7, Gaia DR2 680099824985004288, PSO J121.1693+22.6624, NLTT 18891, WDJ080440.63+223949.68, Gaia EDR3 680099824985004288, J0804+2239, Gaia DR3 680099824985004288, LP 366-38, USNO-B1.0 1126-00180955, SDSS J080440.63+223948.6, WD 0801+228
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | Bergeron et al. 2022 | McCleery et al. 2020 | Blouin et al. 2018 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 04 40.63 (0.09) | 08 04 40.63 (0.1) | 08 04 40.63 (0.1) | 08 04 40.63 | 08 04 40.63 (0.09) | 08 04 40.63 | 08 04 40.78 | |||||||||
Declination | 22 39 44.50 (0.07) | 22 39 44.66 (0.07) | 22 39 44.66 (0.07) | 22 39 44.50 | 22 39 49.68 (0.07) | 22 39 44.66 | 22 39 45.00 | |||||||||
Spectral type | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ: | DZ | DZ | ||||||
Effective temperature | [K] | 5173.0 (67) | 4920.0 (26) | 4985.0 (27) | 5122.6 (54) | 4970.0 (100) | 4970.0 (100) | 5222.0 | 5003.0 (33) | |||||||
log(g) | [cgs] | 7.99 (0.05) | 7.91 (0.009) | 7.95 (0.05) | 7.98 (0.05) | 7.98 (0.05) | 8.01 | 7.97 (0.02) | ||||||||
Mass | [M☉] | 0.56 (0.03) | 0.515 (0.006) | 0.542 (0.004) | 0.558 (0.03) | 0.587 | 0.549 (0.01) | |||||||||
log(Luminosity) | [L☉] | |||||||||||||||
Cooling age | [Gyr] | 5.3000 | 5.3270 | 5.9000 (0.6) | 5.8700 (0.6) | 4.6700 | ||||||||||
log(H/He) | -1.25 | -1.31 | -1.6 (0.2) | -1.6 | ||||||||||||
log(C/He) | ||||||||||||||||
log(Ca/He) | -10.0 (0.1) | -10.0 | ||||||||||||||
log(Ca/H) | ||||||||||||||||
log(N/He) | ||||||||||||||||
log(O/He) | ||||||||||||||||
log(Na/He) | -11.0 (0.2) | |||||||||||||||
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) | -9.8 (0.2) | |||||||||||||||
log(Co/He) | ||||||||||||||||
log(Ni/He) | ||||||||||||||||
log(Cu/He) | ||||||||||||||||
log(Zn/He) | ||||||||||||||||
log(Ga/He) | ||||||||||||||||
log(Ge/He) | ||||||||||||||||
log(Sr/He) | ||||||||||||||||
Parallax | [mas] | 25.37 (0.1) | 25.37 (0.1) | 25.28 (0.1) | 25.28 (0.1) | 25.28 (0.1) | 25.28 (0.1) | 25.28 (0.1) | 25.37 | 25.37 (0.1) | 25.28 (0.1) | |||||
Distance | [pc] | 39.41 (0.2) | 39.42 (0.2) | 39.56 (0.2) | 39.56 (0.2) | 39.56 (0.2) | 39.56 (0.2) | 39.56 (0.2) | 39.41 | 39.41 (0.2) | 39.56 (0.2) | |||||
Composition | He | He | He | He | He | |||||||||||
Proper motion (right ascension) | [mas/yr] | 1.810602686 (0.1) | 1.644112114 (0.2) | 1.811 (0.1) | 1.644112114 | |||||||||||
Proper motion (declination) | [mas/yr] | -324.0000977 (0.08) | -324.0396324 (0.1) | -324.0 (0.08) | -324.0396324 | |||||||||||
Variability | ||||||||||||||||
Magnetic | ||||||||||||||||
Bd | [MG] | |||||||||||||||
Infrared excess (disk) | ||||||||||||||||
Binarity | ||||||||||||||||
B magnitude | 19.00 | |||||||||||||||
V magnitude | ||||||||||||||||
R magnitude | 17.50 | |||||||||||||||
I magnitude | ||||||||||||||||
J magnitude | 16.71 (0.04) | 16.71 (0.04) | 16.88 (0.2) | 16.71 (0.04) | ||||||||||||
H magnitude | 16.92 (0.04) | 16.92 (0.04) | 16.69 (0.01) | |||||||||||||
K magnitude | 17.29 (0.06) | 17.29 (0.06) | 17.29 (0.06) | |||||||||||||
u magnitude | 19.82 (0.03) | 19.73 (0.03) | 19.78 (0.03) | 19.78 (0.03) | 19.73 | |||||||||||
g magnitude | 18.30 (0.03) | 18.16 (0.004) | 18.28 (0.007) | 18.30 | ||||||||||||
r magnitude | 17.59 (0.03) | 17.61 (0.004) | 17.60 (0.006) | 17.59 | ||||||||||||
i magnitude | 17.39 (0.03) | 17.41 (0.005) | 17.39 (0.006) | 17.39 | ||||||||||||
z magnitude | 17.33 (0.03) | 17.36 (0.005) | 17.31 (0.01) | 17.33 | ||||||||||||
G magnitude | 17.66 (0.01) | 17.67 | 17.67 | 17.66 | 17.66 (0.003) | 17.67 | ||||||||||
BP magnitude | 18.08 (0.01) | 18.09 | 18.09 | |||||||||||||
RP magnitude | 17.08 (0.007) | 17.06 | 17.06 | |||||||||||||
Pan g magnitude | 18.16 (0.004) | 18.16 (0.004) | 18.16 (0.004) | |||||||||||||
Pan r magnitude | 17.61 (0.003) | 17.61 (0.004) | 17.61 (0.004) | |||||||||||||
Pan i magnitude | 17.41 (0.005) | 17.41 (0.005) | 17.41 (0.005) | |||||||||||||
Pan z magnitude | 17.36 (0.006) | 17.36 (0.005) | 17.36 (0.005) | |||||||||||||
Pan y magnitude | 17.28 (0.01) | 17.28 (0.009) | 17.28 (0.009) | |||||||||||||
E(B-V) | 0.001 |
* 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.