All names: NLTT 21332, USNO-B1.0 1001-00173828, WD 0913+103, WDJ091602.69+101110.69, TIC 311988681, 09160+1011, SDSS J091602.83+101109.6, 0913+103, 2MASS J09160269+1011107, GALEX J091602.7+101110, SDSS J091602.73+101110.5, LSPM J0916+1011, PG 0913+104, Gaia DR2 591040864898749312, LB 3013, PM J09160+1011, SDSS J091602.73+101110.4, Gaia DR3 591040864898749312, SDSS J091602.72+101110.4, Gaia EDR3 591040864898749312, LP 487-21, J0916+1011
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Coutu et al. 2019 | Leggett et al. 2018 | Gaia DR2 | Stilism | Limoges et al. 2015 | Koester et al. 2006 | Wegner et al. 1985 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 16 02.87 (0.04) | 09 16 02.73 | 09 16 02.87 (0.06) | 09 16 02.69 | 09 16 02.87 (0.06) | 09 16 02.87 | 09 16 02.69 (0.04) | 09 16 02.87 | 09 16 01.75 | 09 16 02.73 | |||||||||||
| Declination | 10 11 09.38 (0.03) | 10 11 10.44 | 10 11 09.42 (0.05) | 10 11 10.69 | 10 11 09.42 (0.05) | 10 11 09.38 | 10 11 10.69 (0.03) | 10 11 09.42 | 10 11 09.60 | 10 11 10.46 | |||||||||||
| Spectral type | DQZA | DQZ | DQZA | DQZA | DQ | DQ5.9 | DQ | DQZA | DQ | DCQ5 | DQ | DC6 | DQZ | DQ | |||||||
| Effective temperature | [K] | 8512.0 (46) | 8819.0 (98) | 8516.0 (27) | 8837.0 (46) | 8406.0 (201) | 8534.0 (62) | 7930.0 (180) | 8715.0 | 9000.0 (500) | 8354.0 (43) | 10204.0 (110) | |||||||||
| log(g) | [cgs] | 7.96 (0.008) | 8.07 (0.03) | 7.96 (0.006) | 8.07 (0.02) | 7.93 | 8.06 (0.02) | 8.00 (0) | 8.00 (0) | 8.00 | 7.92 (0.009) | 9.57 (0.3) | |||||||||
| Mass | [M☉] | 0.556 (0.006) | 0.618 (0.02) | 0.553 (0.005) | 0.5341 | 0.612 (0.02) | 0.58 (0.1) | 0.531 (0.007) | |||||||||||||
| log(Luminosity) | [L☉] | -3.25 | |||||||||||||||||||
| Cooling age | [Gyr] | 0.9400 | 0.8900 | 1.0180 (0.03) | |||||||||||||||||
| log(H/He) | -4.0 | <-4 | |||||||||||||||||||
| log(C/He) | -4.98 | -4.91 | -5.2085 (0.03) | -4.81 (0.01) | -4.7 (-5) | ||||||||||||||||
| log(Ca/He) | |||||||||||||||||||||
| log(Ca/H) | |||||||||||||||||||||
| log(N/He) | -7 | ||||||||||||||||||||
| log(O/He) | -7 | ||||||||||||||||||||
| 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] | 25.90 (0.04) | 25.90 (0.04) | 25.77 (0.07) | 25.77 (0.07) | 25.77 | 26.72 (0.5) | 25.77 (0.07) | 25.90 | 25.90 (0.04) | 25.77 (0.07) | ||||||||||
| Distance | [pc] | 38.61 (0.06) | 38.61 (0.06) | 38.80 (0.1) | 38.81 (0.1) | 38.81 (0.1) | 37.43 (0.6) | 38.81 (0.1) | 35.00 (0.9) | 38.61 | 38.61 (0.06) | 38.81 (0.1) | |||||||||
| Composition | He | He | He | He | He | He | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 170.1222753 (0.05) | 169.9242323 (0.1) | 170.122 (0.05) | 169.924 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -81.73704085 (0.04) | -81.73085506 (0.09) | -81.737 (0.04) | -81.731 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 16.00 | ||||||||||||||||||||
| V magnitude | |||||||||||||||||||||
| R magnitude | 15.40 | ||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 15.61 (0.005) | 15.65 (0.08) | |||||||||||||||||||
| H magnitude | 15.56 (0.01) | 15.45 (0.1) | |||||||||||||||||||
| K magnitude | 15.56 (0.02) | ||||||||||||||||||||
| u magnitude | 15.99 (0.006) | 15.98 (0.006) | 15.99 (0.006) | 15.99 (0.006) | 15.99 (0.01) | ||||||||||||||||
| g magnitude | 15.77 (0.004) | 15.77 (0.004) | 15.77 (0.004) | 15.81 (0.02) | |||||||||||||||||
| r magnitude | 15.81 (0.005) | 15.81 (0.005) | 15.81 (0.005) | 15.81 (0.02) | |||||||||||||||||
| i magnitude | 15.92 (0.005) | 15.92 (0.005) | 15.92 (0.005) | 15.93 (0.02) | |||||||||||||||||
| z magnitude | 16.07 (0.008) | 16.07 (0.008) | 16.07 (0.008) | 16.06 (0.02) | |||||||||||||||||
| G magnitude | 15.74 (0.003) | 15.76 | 15.76 | 15.74 | 15.74 (0.003) | 15.76 | |||||||||||||||
| BP magnitude | 15.81 (0.003) | 15.81 | 15.81 | ||||||||||||||||||
| RP magnitude | 15.61 (0.003) | 15.62 | 15.62 | ||||||||||||||||||
| Pan g magnitude | 15.79 (0.005) | 15.79 (0.004) | |||||||||||||||||||
| Pan r magnitude | 15.82 (0.004) | 15.82 (0.004) | |||||||||||||||||||
| Pan i magnitude | 15.94 (0.003) | 15.94 (0.004) | |||||||||||||||||||
| Pan z magnitude | 16.08 (0.005) | 16.08 (0.005) | |||||||||||||||||||
| Pan y magnitude | 16.17 (0.007) | 16.17 (0.007) | |||||||||||||||||||
| 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.