All names: Gaia EDR3 1748816983925915776, TIC 374411850, WD 2027+067, SDSS J203003.18+065458.2, WDJ203003.14+065457.36, LP 575-17, SDSS J203003.17+065458.2, GALEX J203003.1+065458, J2030+0655, LSPM J2030+0654, Gaia DR3 1748816983925915776, Gaia DR2 1748816983925915776, NLTT 49346, 2MASS J20300314+0654575, USNO-B1.0 0969-00605073
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 20 30 03.27 (0.06) | 20 30 03.27 (0.08) | 20 30 03.27 | 20 30 03.14 (0.06) | 20 30 03.27 | 20 30 03.41 | |||||||
Declination | 06 55 00.38 (0.05) | 06 55 00.29 (0.07) | 06 55 00.38 | 06 54 57.36 (0.05) | 06 55 00.29 | 06 55 06.24 | |||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 5926.0 (22) | 5942.0 (20) | 5926.0 (23) | 5860.0 | 5985.0 (40) | |||||||
log(g) | [cgs] | 8.12 (0.008) | 8.13 (0.008) | 8.12 (0.008) | 8.10 | 8.14 (0.01) | |||||||
Mass | [M☉] | 0.665 (0.007) | 0.669 (0.007) | 0.664 (0.008) | 0.646 | 0.678 (0.01) | |||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 3.2900 | 3.0330 | ||||||||||
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] | 24.30 (0.08) | 24.27 (0.1) | 24.27 (0.1) | 24.30 | 24.30 (0.08) | 24.27 (0.1) | ||||||
Distance | [pc] | 41.15 (0.1) | 41.20 (0.2) | 41.20 (0.2) | 41.15 | 41.15 (0.1) | 41.20 (0.2) | ||||||
Composition | H | H | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | 121.1291567 (0.09) | 121.2825416 (0.2) | 121.129 (0.09) | 121.2825416 | ||||||||
Proper motion (declination) | [mas/yr] | 189.087445 (0.07) | 189.2234916 (0.1) | 189.087 (0.07) | 189.2234916 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | yes | ||||||||||||
B magnitude | 18.60 | ||||||||||||
V magnitude | |||||||||||||
R magnitude | 17.60 | ||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.36 (0.01) | 16.19 (0.1) | |||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 18.62 (0.02) | 18.62 (0.02) | 18.62 (0.02) | ||||||||||
g magnitude | 17.70 (0.005) | 17.70 (0.005) | |||||||||||
r magnitude | 17.30 (0.005) | 17.30 (0.005) | |||||||||||
i magnitude | 17.15 (0.006) | 17.15 (0.006) | |||||||||||
z magnitude | 17.10 (0.01) | 17.10 (0.01) | |||||||||||
G magnitude | 17.32 (0.007) | 17.34 | 17.32 | 17.32 (0.003) | 17.34 | ||||||||
BP magnitude | 17.64 (0.007) | 17.66 | 17.66 | ||||||||||
RP magnitude | 16.84 (0.007) | 16.86 | 16.86 | ||||||||||
Pan g magnitude | 17.68 (0.006) | 17.68 (0.006) | |||||||||||
Pan r magnitude | 17.32 (0.003) | 17.32 (0.003) | |||||||||||
Pan i magnitude | 17.18 (0.002) | 17.18 (0.002) | |||||||||||
Pan z magnitude | 17.16 (0.006) | 17.16 (0.006) | |||||||||||
Pan y magnitude | 17.16 (0.01) | 17.16 (0.01) | |||||||||||
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.