All names: NLTT 22258, LP 166-12, 09395+4951, Gaia DR3 826275295988399232, USNO-B1.0 1398-00206902, SDSS J093931.65+495148.2, PSO J144.8802+49.8633, J0939+4951, TIC 289704364, LSPM J0939+4951, SDSS J093931.66+495148.3, SDSS J093931.66+495148.2, WDJ093931.74+495148.29, Gaia EDR3 826275295988399232, Gaia DR2 826275295988399232, PM J09395+4951, 2MASS J09393176+4951485
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 39 31.09 (0.05) | 09 39 31.11 (0.06) | 09 39 31.11 (0.06) | 09 39 31.09 | 09 39 31.74 (0.05) | 09 39 31.11 | |||||||||||
| Declination | 49 51 48.07 (0.06) | 49 51 48.08 (0.07) | 49 51 48.08 (0.07) | 49 51 48.07 | 49 51 48.28 (0.06) | 49 51 48.08 | |||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | ||||||||
| Effective temperature | [K] | 6078.0 (26) | 5997.0 (59) | 5978.0 (21) | 6072.0 (12) | 5947.0 (52) | 6025.0 (45) | 6042.0 | 5783.0 | 5990.0 (69) | 6228.0 (43) | ||||||
| log(g) | [cgs] | 8.39 (0.007) | 8.37 (0.03) | 8.33 (0.006) | 8.39 (0.006) | 8.35 (0.03) | 8.38 (0.02) | 8.38 | 8.24 | 8.00 (0.2) | 8.45 (0.01) | ||||||
| Mass | [M☉] | 0.844 (0.007) | 0.826 (0.02) | 0.803 (0.006) | 0.841 (0.005) | 0.832 (0.01) | 0.833 | 0.726 | 0.59 (0.1) | 0.879 (0.01) | |||||||
| log(Luminosity) | [L☉] | -3.73 | |||||||||||||||
| Cooling age | [Gyr] | 4.8500 | 4.7020 (0.1) | 4.6770 | 4.9000 | ||||||||||||
| 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] | 29.28 (0.08) | 29.28 (0.08) | 29.23 (0.1) | 29.23 (0.1) | 29.23 (0.1) | 29.23 (0.1) | 29.28 | 29.28 (0.08) | 29.23 (0.1) | |||||||
| Distance | [pc] | 34.15 (0.09) | 34.15 (0.09) | 34.21 (0.1) | 34.22 (0.1) | 34.22 (0.1) | 34.22 (0.1) | 43.30 (5) | 34.15 | 34.15 (0.09) | 34.22 (0.1) | ||||||
| Composition | H | H | H | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -389.4285773 (0.07) | -389.352 (0.1) | -379.0 | -389.429 (0.07) | -389.351718 | |||||||||||
| Proper motion (declination) | [mas/yr] | -13.35996141 (0.07) | -13.447 (0.2) | -10.0 | -13.36 (0.07) | -13.44715171 | |||||||||||
| Variability | |||||||||||||||||
| Magnetic | |||||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | |||||||||||||||||
| B magnitude | 17.50 | ||||||||||||||||
| V magnitude | |||||||||||||||||
| R magnitude | 16.70 | ||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 16.32 (0.01) | 16.20 (0.1) | 16.20 | 16.20 (0.1) | |||||||||||||
| H magnitude | 16.28 (0.2) | 16.28 (0.2) | 16.28 | 16.28 (0.2) | |||||||||||||
| K magnitude | 15.53 (0.03) | 15.53 | |||||||||||||||
| u magnitude | 18.45 (0.02) | 18.45 | 18.47 (0.01) | 18.47 (0.01) | |||||||||||||
| g magnitude | 17.59 | 17.54 (0.009) | 17.60 (0.006) | ||||||||||||||
| r magnitude | 17.24 | 17.22 (0.005) | 17.23 (0.006) | ||||||||||||||
| i magnitude | 17.10 | 17.10 (0.003) | 17.11 (0.006) | ||||||||||||||
| z magnitude | 17.09 | 17.11 (0.005) | 17.07 (0.01) | ||||||||||||||
| G magnitude | 17.24 (0.007) | 17.25 | 17.25 | 17.24 | 17.24 (0.003) | 17.25 | |||||||||||
| BP magnitude | 17.52 (0.007) | 17.53 | 17.53 | ||||||||||||||
| RP magnitude | 16.77 (0.005) | 16.77 | 16.77 | ||||||||||||||
| Pan g magnitude | 17.54 (0.009) | 17.54 (0.009) | 17.54 (0.009) | ||||||||||||||
| Pan r magnitude | 17.22 (0.005) | 17.22 (0.005) | 17.22 (0.005) | ||||||||||||||
| Pan i magnitude | 17.10 (0.004) | 17.10 (0.003) | 17.10 (0.003) | ||||||||||||||
| Pan z magnitude | 17.11 (0.005) | 17.11 (0.005) | 17.11 (0.005) | ||||||||||||||
| Pan y magnitude | 17.09 (0.005) | 17.09 (0.005) | 17.09 (0.005) | ||||||||||||||
| 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.