All names: LP 787-26, Gaia DR2 5681814336118618368, Gaia DR3 5681814336118618368, 2MASS J09204804-1729009, Gaia EDR3 5681814336118618368, 0918-172, DENIS J092048.0-172900, NLTT 21534, WDJ092048.04-172900.65, TIC 1362894, WD 0918-172, J0920-1728, USNO-B1.0 0725-00275741, GALEX J092048.0-172859
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Leggett et al. 2018 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 20 47.92 (0.09) | 09 20 47.92 (0.1) | 09 20 47.92 | 09 20 48.04 (0.09) | 09 20 47.92 | 09 20 50.28 | |||||
| Declination | -17 28 58.23 (0.06) | -17 28 58.30 (0.1) | -17 28 58.23 | -17 29 00.64 (0.06) | -17 28 58.30 | -17 28 46.92 | |||||
| Spectral type | DA | DA8.1 | DA | DA | DA | ||||||
| Effective temperature | [K] | 6217.0 (75) | 6237.0 (127) | 6361.0 (48) | |||||||
| log(g) | [cgs] | 8.06 (0.02) | 8.01 (0.05) | 8.09 (0.02) | |||||||
| Mass | [M☉] | 0.623 (0.02) | 0.597 (0.04) | 0.646 (0.01) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.3300 | 2.0810 (0.2) | ||||||||
| 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] | 18.06 (0.1) | 18.21 (0.2) | 19.15 (2) | 18.21 (0.2) | 18.06 | 18.06 (0.1) | 18.21 (0.2) | |||
| Distance | [pc] | 55.36 (0.4) | 54.91 (0.5) | 52.22 (4) | 54.91 (0.5) | 55.36 | 55.36 (0.4) | 54.91 (0.5) | |||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -114.836779 (0.1) | -115.1167325 (0.3) | -114.837 (0.1) | -115.1167325 | ||||||
| Proper motion (declination) | [mas/yr] | 150.9044846 (0.07) | 151.4678834 (0.4) | 150.904 (0.07) | 151.4678834 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | yes | ||||||||||
| B magnitude | |||||||||||
| V magnitude | 17.90 | ||||||||||
| R magnitude | |||||||||||
| I magnitude | 17.08 (0.1) | ||||||||||
| J magnitude | 16.76 (0.02) | 16.81 (0.2) | |||||||||
| H magnitude | |||||||||||
| K magnitude | 16.51 (0.05) | ||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 17.65 (0.008) | 17.66 | 17.65 | 17.65 (0.003) | 17.66 | ||||||
| BP magnitude | 17.91 (0.008) | 17.89 | 17.89 | ||||||||
| RP magnitude | 17.22 (0.007) | 17.22 | 17.22 | ||||||||
| Pan g magnitude | 17.93 (0.0001) | 17.93 (0) | |||||||||
| Pan r magnitude | 17.66 (0.006) | 17.66 (0.005) | |||||||||
| Pan i magnitude | 17.56 (0.01) | 17.56 (0.009) | |||||||||
| Pan z magnitude | 17.57 (0.01) | 17.57 (0.01) | |||||||||
| Pan y magnitude | 17.56 (0.01) | 17.56 (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.