All names: CRTS J003439.6+290845, [SHM2017] J008.66522+29.14591, Gaia DR3 2857997068416072832, ZTF J003439.65+290845.3, SDSS J003439.65+290845.28, SDSS J003439.65+290845.2, Gaia EDR3 2857997068416072832, Gaia DR2 2857997068416072832
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 34 39.66 (0.1) | 00 34 39.65 | 00 34 39.66 (0.2) | 00 34 39.66 (0.1) | ||||
| Declination | 29 08 45.26 (0.1) | 29 08 45.26 | 29 08 45.26 (0.1) | 29 08 45.27 (0.1) | ||||
| Spectral type | sdA | sdA | ||||||
| Effective temperature | [K] | 7319.0 (37) | ||||||
| log(g) | [cgs] | 5.89 (0.1) | ||||||
| Mass | [M☉] | 0.15128 (0.0004) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.24 (0.2) | 0.13 (0.2) | 0.24 (0.2) | ||||
| Distance | [pc] | 4177.91 (2907) | 7727.98 (12840) | 4177.11 (2907) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 0.9095425 (0.2) | 1.319 (0.4) | 0.91 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | -0.647980176 (0.1) | -0.29 (0.3) | -0.648 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | 18.20 | |||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.77 (0.03) | 19.79 (0.04) | 19.79 (0.04) | |||||
| g magnitude | 18.55 (0.008) | 18.55 (0.02) | 18.55 (0.02) | |||||
| r magnitude | 18.35 (0.008) | 18.36 (0.02) | 18.36 (0.02) | |||||
| i magnitude | 18.29 (0.009) | 18.27 (0.02) | 18.27 (0.02) | |||||
| z magnitude | 18.28 (0.02) | 18.24 (0.02) | 18.24 (0.02) | |||||
| G magnitude | 18.24 (0.04) | 18.25 | 18.24 (0.01) | |||||
| BP magnitude | 18.40 (0.04) | 18.40 | ||||||
| RP magnitude | 17.88 (0.03) | 17.88 | ||||||
| Pan g magnitude | 18.66 (0.008) | |||||||
| Pan r magnitude | 18.34 (0.06) | |||||||
| Pan i magnitude | 18.38 (0.02) | |||||||
| Pan z magnitude | 18.34 (0.03) | |||||||
| Pan y magnitude | 18.19 (0.02) | |||||||
| E(B-V) | 0.058 | |||||||
* 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.