All names: Gaia EDR3 3840846114438361984, WDS J09255+0009B, Gaia DR2 3840846114438361984, USNO-B1.0 0903-00179789, SDSS J092531.29+001823.9, LSPM J0925+0018N, 0922+005, NLTT 21723, J0925+0018, ** LDS 5703B, Gaia DR3 3840846114438361984, SDSS J092531.30+001824.0, WDJ092531.29+001823.57, LHS 2139, WDJ092531.29+001823.58, LP 607-65
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Bergeron et al. 2022 | Leggett et al. 2018 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 25 31.22 (0.3) | 09 25 31.22 | 09 25 31.22 | 09 25 31.29 (0.3) | 09 25 31.22 | ||||||
| Declination | 00 18 14.38 (0.2) | 00 18 14.67 | 00 18 14.38 | 00 18 23.57 (0.2) | 00 18 14.67 | ||||||
| Spectral type | IRfaint | D:12.2 | DA: | DA | |||||||
| Effective temperature | [K] | 4313.0 (60) | 4313.0 (60) | 4127.0 (65) | 4597.0 (102) | ||||||
| log(g) | [cgs] | 7.75 (0.04) | 7.56 (0.04) | 7.87 (0.06) | |||||||
| Mass | [M☉] | 0.459 (0.02) | 0.459 (0.02) | 0.338 (0.02) | 0.499 (0.05) | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 10.4600 | 4.0180 (0.3) | ||||||||
| log(H/He) | 0.04 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 15.20 (0.4) | 15.67 (0.2) | 15.01 (0.5) | 15.20 | 15.20 (0.4) | 15.01 (0.5) | ||||
| Distance | [pc] | 65.78 (2) | 63.82 (0.7) | 66.63 (2) | 65.78 | 65.78 (2) | 66.63 (2) | ||||
| Composition | [He/H=-0.04] | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -69.62155101 (0.4) | -70.41984761 (0.8) | -69.622 (0.4) | -70.41984761 | ||||||
| Proper motion (declination) | [mas/yr] | -574.5790179 (0.2) | -575.1051581 (0.7) | -574.579 (0.2) | -575.1051581 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 19.00 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 17.60 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 23.00 (0.4) | 23.00 (0.4) | |||||||||
| g magnitude | 20.20 (0.02) | 20.20 (0.02) | |||||||||
| r magnitude | 19.22 (0.01) | 19.22 (0.01) | |||||||||
| i magnitude | 18.77 (0.01) | 18.77 (0.01) | |||||||||
| z magnitude | 18.66 (0.04) | 18.66 (0.04) | |||||||||
| G magnitude | 19.22 (0.06) | 19.25 | 19.22 | 19.22 (0.004) | 19.25 | ||||||
| BP magnitude | 19.77 (0.06) | 19.69 | 19.69 | ||||||||
| RP magnitude | 18.50 (0.02) | 18.53 | 18.53 | ||||||||
| Pan g magnitude | 19.94 (0.02) | ||||||||||
| Pan r magnitude | 19.14 (0.02) | ||||||||||
| Pan i magnitude | 18.76 (0.009) | ||||||||||
| Pan z magnitude | 18.59 (0.04) | ||||||||||
| Pan y magnitude | 18.53 (0.03) | ||||||||||
| E(B-V) | 0.002 | ||||||||||
* 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.