All names: WDJ155450.26+325413.70, WIRED J155450.28+325413.2, WD 1552+330, WISEA J155450.33+325412.4, LSPM J1554+3254, Gaia DR3 1369861200377513088, 2MASS J15545024+3254137, CSO 1114, Gaia EDR3 1369861200377513088, [CBB98] 35, WISE J155450.33+325412.4, SDSS J155450.28+325413.3, UCAC4 615-052886, SDSS J155450.28+325413.2, USNO-B1.0 1229-00302120, Gaia DR2 1369861200377513088, GALEX J155450.3+325413, TIC 188576049
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2026b | MWDD H | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 54 50.41 (0.03) | 15 54 50.29 | 15 54 50.40 (0.03) | 15 54 50.41 | 15 54 50.26 (0.03) | 15 54 50.40 | 15 54 50.29 | 15 54 49.82 | 15 54 50.28 | ||||||||
| Declination | 32 54 11.61 (0.03) | 32 54 13.36 | 32 54 11.68 (0.04) | 32 54 11.61 | 32 54 13.70 (0.03) | 32 54 11.68 | 32 54 13.28 | 32 54 10.08 | 32 54 13.29 | ||||||||
| Spectral type | DB | DB | DB | DBApec: | DBApec: | DBM: | DB | ||||||||||
| Effective temperature | [K] | 11226.0 (68) | 10603.0 | 10916.0 | 10783.0 (66) | 10955.0 (95) | 11960.0 (213) | 11748.0 (257) | |||||||||
| log(g) | [cgs] | 8.04 (0.003) | 8.04 | 8.00 | 8.00 (0) | 8.02 (0.01) | 8.85 (0.2) | 9.10 (0.2) | |||||||||
| Mass | [M☉] | 0.606 (0.003) | 0.624 | 0.583 | 0.591 (0.01) | ||||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 0.5430 | 0.4955 | ||||||||||||||
| log(H/He) | <-5.93 | ||||||||||||||||
| log(C/He) | |||||||||||||||||
| log(Ca/He) | <-11.05 | ||||||||||||||||
| log(Ca/H) | |||||||||||||||||
| log(Li/He) | |||||||||||||||||
| log(Be/He) | |||||||||||||||||
| log(B/He) | |||||||||||||||||
| 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(K/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] | 13.35 (0.04) | 13.28 (0.04) | 13.35 | 13.35 (0.04) | 13.28 (0.04) | |||||||||||
| Distance | [pc] | 74.89 (0.2) | 75.29 (0.3) | 73.00 | 74.89 | 74.89 (0.2) | 75.29 (0.3) | ||||||||||
| Composition | He | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 115.0952555 (0.03) | 115.1242838 (0.07) | 115.095 (0.03) | 115.1242838 | 119.4 | |||||||||||
| Proper motion (declination) | [mas/yr] | -130.3298215 (0.05) | -130.3015376 (0.09) | -130.33 (0.05) | -130.3015376 | -119.8 | |||||||||||
| Variability | |||||||||||||||||
| Magnetic | |||||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | WDMS | ||||||||||||||||
| B magnitude | 16.52 (0.1) | ||||||||||||||||
| V magnitude | 16.47 (0.02) | ||||||||||||||||
| R magnitude | 16.00 | ||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 16.47 (0.1) | ||||||||||||||||
| H magnitude | 16.54 (0.3) | ||||||||||||||||
| K magnitude | 16.11 (0.3) | ||||||||||||||||
| u magnitude | 16.45 (0.006) | 16.45 (0.006) | 16.45 (0.006) | 16.47 (0.01) | 16.38 | 16.45 (0.01) | |||||||||||
| g magnitude | 16.35 (0.004) | 16.34 (0.004) | 16.34 (0.004) | 16.39 (0.01) | 16.38 | 16.36 (0.01) | |||||||||||
| r magnitude | 16.51 (0.004) | 16.51 (0.004) | 16.51 (0.004) | 16.52 (0.01) | 16.51 (0.01) | ||||||||||||
| i magnitude | 16.67 (0.005) | 16.68 (0.005) | 16.68 (0.005) | 16.68 (0.01) | 16.67 (0.01) | ||||||||||||
| z magnitude | 16.88 (0.01) | 16.88 (0.01) | 16.88 (0.01) | 16.89 (0.02) | 16.88 (0.02) | ||||||||||||
| G magnitude | 16.41 (0.003) | 16.43 | 16.41 | 16.41 (0.003) | 16.43 | ||||||||||||
| BP magnitude | 16.42 (0.003) | 16.40 | 16.40 | ||||||||||||||
| RP magnitude | 16.37 (0.003) | 16.37 | 16.37 | ||||||||||||||
| Pan g magnitude | 16.39 (0.003) | ||||||||||||||||
| Pan r magnitude | 16.52 (0.001) | ||||||||||||||||
| Pan i magnitude | 16.70 (0.003) | ||||||||||||||||
| Pan z magnitude | 16.87 (0.008) | ||||||||||||||||
| Pan y magnitude | 16.99 (0.01) | ||||||||||||||||
| E(B-V) | 0.011 | ||||||||||||||||
* 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.