All names: SDSS J090945.88+080455.3, Gaia DR3 590264708473414784, WD 0907+082, [SGR2010] J0909+0804, Gaia DR2 590264708473414784, Gaia EDR3 590264708473414784, SDSS J090945.86+080455.4, GALEX J090945.9+080454, SDSS J090945.85+080455.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 09 45.85 (0.8) | 09 09 45.86 | 09 09 45.86 (0.9) | 09 09 45.85 | 09 09 45.86 (0.8) | 09 09 45.29 | 09 09 45.86 | |||
| Declination | 08 04 55.45 (0.7) | 08 04 55.38 | 08 04 55.45 (0.9) | 08 04 55.31 | 08 04 55.39 (0.7) | 08 04 51.96 | 08 04 55.38 | |||
| Spectral type | DA+M | DA+M1 | DA M | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (3) | ||||||||
| log(g) | [cgs] | 9.84 (0.5) | ||||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | -0.01 (0.9) | 2.59 (1) | 2.59 (1) | ||||||
| Distance | [pc] | 385.97 (148) | 254.00 (8) | 385.97 (148) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -6.073441965 (0.9) | -8.01347537 (2) | -6.073 (0.9) | ||||||
| Proper motion (declination) | [mas/yr] | 3.390585264 (0.8) | 2.272293038 (2) | 3.391 (0.8) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.54 (0.02) | |||||||||
| H magnitude | 16.95 (0.02) | |||||||||
| K magnitude | 16.66 (0.04) | |||||||||
| u magnitude | 21.31 (0.1) | 21.28 | 21.28 (0.1) | 21.28 | 21.30 (0.1) | |||||
| g magnitude | 20.64 (0.02) | 20.66 | 20.64 (0.03) | 20.66 | 20.68 (0.03) | |||||
| r magnitude | 19.87 (0.02) | 19.87 | 19.86 (0.02) | 19.86 | 19.87 (0.03) | |||||
| i magnitude | 19.16 (0.02) | 19.19 | 19.17 (0.02) | 19.19 | 19.18 (0.03) | |||||
| z magnitude | 18.76 (0.03) | 18.78 | 18.76 (0.03) | 18.78 | 18.78 (0.03) | |||||
| G magnitude | 19.80 (0.08) | 19.82 | 19.80 (0.01) | |||||||
| BP magnitude | 20.53 (0.08) | 20.47 | ||||||||
| RP magnitude | 18.86 (0.04) | 18.80 | ||||||||
| Pan g magnitude | 20.55 (0.004) | |||||||||
| Pan r magnitude | 19.83 (0.009) | |||||||||
| Pan i magnitude | 19.17 (0.007) | |||||||||
| Pan z magnitude | 18.86 (0.007) | |||||||||
| Pan y magnitude | 18.62 (0.02) | |||||||||
| E(B-V) | 0.028 | |||||||||
* 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.