All names: Gaia DR3 712076376197179520, Gaia EDR3 712076376197179520, Gaia DR2 712076371899873280, SDSS J085857.42+320809.5, 2MASS J08585743+3208097, USNO-A2.0 1200-06196120, LAMOST J085857.42+320809.5, TIC 166530600, WD 0855+323, GALEX J085857.3+320808, SDSS J085857.43+320809.51, SDSS J085857.43+320809.5, SDSS J085857.36+320809.6, [HHD2009] SDSS J0858+3208
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | SDSS DR10 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Kepler et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 58 57.42 (0.9) | 08 58 57.43 | 08 58 57.43 | 08 58 57.42 (0.9) | 08 58 57.42 | 08 58 57.42 (0.9) | 08 58 56.86 | ||||
| Declination | 32 08 09.31 (0.6) | 32 08 09.49 | 32 08 09.49 | 32 08 09.31 (0.6) | 32 08 09.49 | 32 08 09.38 (0.6) | 32 08 01.32 | ||||
| Spectral type | DB+M | DB:+M | DB+M | DB: dM | |||||||
| Effective temperature | [K] | 16051.0 (10) | 46797.0 (3000) | ||||||||
| log(g) | [cgs] | 9.00 | 7.43 (0.5) | ||||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 6.93 (1) | 4.20 (1) | 6.93 (1) | |||||||
| Distance | [pc] | 144.28 (24) | 238.34 (75) | 1254.00 (790) | 144.28 (24) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 5.90860432 (1) | 4.575 (2) | 5.909 (1) | |||||||
| Proper motion (declination) | [mas/yr] | -4.221522517 (1) | -8.304 (1) | -4.222 (1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | ||||||||||
| B magnitude | 18.30 (0.3) | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.30 (0.3) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.34 (0.1) | ||||||||||
| H magnitude | 15.73 (0.1) | ||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.59 (0.03) | 19.59 (0.03) | 19.61 | 19.59 (0.03) | 19.59 (0.03) | 19.61 | |||||
| g magnitude | 19.40 (0.01) | 19.40 (0.01) | 19.43 | 19.40 (0.01) | 19.41 (0.01) | 19.43 | |||||
| r magnitude | 19.14 (0.01) | 19.14 (0.01) | 19.18 | 19.14 (0.01) | 19.14 (0.01) | 19.18 | |||||
| i magnitude | 18.31 (0.009) | 18.31 (0.009) | 18.35 | 18.31 (0.01) | 18.31 (0.009) | 18.35 | |||||
| z magnitude | 17.62 (0.02) | 17.62 (0.02) | 17.63 | 17.62 (0.02) | 17.61 (0.02) | 17.63 | |||||
| G magnitude | 19.29 (0.05) | 19.18 | 19.29 (0.007) | ||||||||
| BP magnitude | 19.30 (0.05) | 19.21 | |||||||||
| RP magnitude | 17.86 (0.02) | 17.84 | |||||||||
| Pan g magnitude | 19.38 (0.01) | ||||||||||
| Pan r magnitude | 19.19 (0.01) | ||||||||||
| Pan i magnitude | 18.30 (0.01) | ||||||||||
| Pan z magnitude | 17.74 (0.005) | ||||||||||
| Pan y magnitude | 17.45 (0.009) | ||||||||||
| E(B-V) | 0.006 | ||||||||||
* 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.