All names: 21551+4103, LSPM J2155+4103, PM J21551+4103, Gaia DR3 1959573541696236032, WDJ215506.34+410306.65, USNO-B1.0 1310-00449426, J2155+4103, TIC 276549386, 2MASS J21550637+4103067, Gaia EDR3 1959573541696236032, Gaia DR2 1959573541696236032
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Coutu et al. 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 55 06.59 (0.06) | 21 55 06.37 | 21 55 06.59 (0.09) | 21 55 06.59 | 21 55 06.34 (0.06) | 21 55 06.59 | |||||
| Declination | 41 03 07.94 (0.07) | 41 03 06.70 | 41 03 07.90 (0.1) | 41 03 07.94 | 41 03 06.64 (0.07) | 41 03 07.90 | |||||
| Spectral type | DZ | DZ | DZA | DC: | DZA | ||||||
| Effective temperature | [K] | 6525.0 (53) | 6106.0 (317) | 5950.0 (703) | 6197.0 (107) | ||||||
| log(g) | [cgs] | 8.31 (0.01) | 8.17 | 8.00 (0) | 8.22 (0.02) | ||||||
| Mass | [M☉] | 0.775 (0.01) | 0.6817 | 0.57 (0.1) | 0.712 (0.02) | ||||||
| log(Luminosity) | [L☉] | -3.75 | |||||||||
| Cooling age | [Gyr] | 3.6200 | 3.6100 | ||||||||
| log(H/He) | -2.0 | <-3.0107 | |||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | -10.9 | -11.2797 (0.07) | -11.62 | ||||||||
| 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] | 16.90 (0.1) | 16.94 (0.1) | 16.94 | 16.94 (0.1) | 16.90 | 16.90 (0.1) | 16.94 (0.1) | |||
| Distance | [pc] | 59.16 (0.3) | 59.03 (0.5) | 59.02 (0.5) | 59.02 (0.5) | 37.00 (6) | 59.16 | 59.16 (0.3) | 59.02 (0.5) | ||
| Composition | He | He | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | 177.1642296 (0.09) | 177.3361252 (0.2) | 177.164 (0.09) | 177.3361252 | ||||||
| Proper motion (declination) | [mas/yr] | 81.26126929 (0.09) | 81.06478659 (0.2) | 81.261 (0.09) | 81.06478659 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.90 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 16.40 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 17.42 (0.03) | 16.18 | 16.18 (0.1) | ||||||||
| H magnitude | 15.80 (0.03) | 15.80 | 15.80 (0.1) | ||||||||
| K magnitude | 15.80 (0.03) | 15.80 | 15.80 (0.2) | ||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 17.97 (0.01) | 17.99 | 17.97 | 17.97 (0.003) | 17.99 | ||||||
| BP magnitude | 18.17 (0.01) | 18.18 | 18.18 | ||||||||
| RP magnitude | 17.65 (0.01) | 17.62 | 17.62 | ||||||||
| Pan g magnitude | 18.17 (0.005) | 18.17 (0.006) | |||||||||
| Pan r magnitude | 17.98 (0.006) | 17.98 (0.006) | |||||||||
| Pan i magnitude | 17.97 (0.006) | 17.97 (0.005) | |||||||||
| Pan z magnitude | 18.00 (0.01) | 18.00 (0.01) | |||||||||
| Pan y magnitude | 18.07 (0.01) | 18.07 (0.01) | |||||||||
| 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.