All names: OMHR J130956.31+292804.6, [HHD2009] SDSS J1309+2928, SDSS J130956.37+292805.0, Gaia DR2 1462830337344572928, KUV 494-68, KUV 13076+2944, WD 1307+297, [K80] SA 57 13612, PB 3361, [S78c] SA 57 176, GALEX J130956.3+292804, Gaia DR3 1462830337344572928, [SGR2010] J1309+2928, US 353, 2MASS J13095635+2928048, CSO 830, LAMOST J130956.38+292804.7, WIRED J130956.37+292804.9, [BCF91] 790, SDSS J130956.37+292804.9, SDSS J130956.40+292805.2, KKC 76, SDSS J130956.39+292805.1, Gaia EDR3 1462830337344572928, SDSS J130956.38+292805.0, TIC 219028562
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 09 56.39 (0.2) | 13 09 56.38 | 13 09 56.39 (0.3) | 13 09 56.37 | 13 09 56.39 | 13 09 56.38 (0.2) | 13 09 55.56 | 13 09 56.38 | ||||
| Declination | 29 28 05.22 (0.1) | 29 28 05.00 | 29 28 05.21 (0.2) | 29 28 04.91 | 29 28 05.22 | 29 28 04.99 (0.1) | 29 28 02.64 | 29 28 04.99 | ||||
| Spectral type | DA+M | DA | DA+M | DA | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 20222.0 (348) | 9628.0 (40) | |||||||||
| log(g) | [cgs] | 7.80 (0.07) | 8.54 (0.04) | |||||||||
| Mass | [M☉] | 0.515 (0.03) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 4.31 (0.3) | 4.78 (0.4) | 4.31 | 4.31 (0.3) | |||||||
| Distance | [pc] | 231.80 (15) | 209.05 (18) | 385.00 (37) | 231.80 | 231.80 (15) | ||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.39106919 (0.2) | 12.55183692 (0.5) | 14.391 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | 14.52713615 (0.2) | 14.35940056 (0.5) | 14.527 (0.2) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | 18.00 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.16 (0.1) | |||||||||||
| H magnitude | 15.87 (0.2) | |||||||||||
| K magnitude | 15.96 (0.04) | |||||||||||
| u magnitude | 17.90 (0.01) | 17.94 | 17.90 (0.01) | 17.94 | 17.92 (0.02) | |||||||
| g magnitude | 17.77 (0.005) | 17.77 | 17.77 (0.005) | 17.77 | 17.78 (0.03) | |||||||
| r magnitude | 18.05 (0.007) | 18.08 | 18.05 (0.007) | 18.08 | 18.09 (0.02) | |||||||
| i magnitude | 17.85 (0.008) | 17.88 | 17.85 (0.008) | 17.88 | 17.88 (0.01) | |||||||
| z magnitude | 17.56 (0.02) | 17.60 | 17.56 (0.02) | 17.59 | 17.57 (0.02) | |||||||
| G magnitude | 18.03 (0.007) | 17.98 | 18.03 | 18.03 (0.003) | ||||||||
| BP magnitude | 17.88 (0.007) | 17.84 | ||||||||||
| RP magnitude | 17.47 (0.006) | 17.48 | ||||||||||
| Pan g magnitude | 17.82 (0.007) | |||||||||||
| Pan r magnitude | 18.05 (0.005) | |||||||||||
| Pan i magnitude | 17.88 (0.01) | |||||||||||
| Pan z magnitude | 17.65 (0.006) | |||||||||||
| Pan y magnitude | 17.49 (0.01) | |||||||||||
| E(B-V) | 0.012 | |||||||||||
* 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.