All names: SDSS J170509.66+210904.4, WIRED J170509.65+210904.4, GALEX J170509.6+210904, SBC9 3394, SDSS J170509.65+210904.4, Gaia DR3 4562042518677757952, WD 1703+212, Gaia DR2 4562042518677757952, SDSS J170509.66+210904.3, [SGR2010] J1705+2109, TIC 347635156, [HHD2009] SDSS J1705+2109, 2MASS J17050965+2109044, Gaia EDR3 4562042518677757952
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 05 09.66 (0.06) | 17 05 09.65 | 17 05 09.66 (0.07) | 17 05 09.65 | 17 05 09.65 (0.06) | 17 05 09.65 | 17 05 09.65 | 17 05 09.66 | |||||
| Declination | 21 09 04.33 (0.06) | 21 09 04.45 | 21 09 04.33 (0.08) | 21 09 04.39 | 21 09 04.44 (0.06) | 21 09 04.44 | 21 09 03.96 | 21 09 04.44 | |||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA d | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 23886.0 (508) | 24940.0 (430) | 9368.0 (52) | 9224.0 (41) | ||||||||
| log(g) | [cgs] | 7.78 (0.07) | 7.83 (0.06) | 8.91 (0.08) | 8.63 (0.04) | ||||||||
| Mass | [M☉] | 0.52 (0.04) | 0.55 (0.03) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0186 | |||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(C/H) | |||||||||||||
| log(N/H) | |||||||||||||
| log(O/H) | |||||||||||||
| log(Na/H) | |||||||||||||
| log(Mg/H) | |||||||||||||
| log(Al/H) | |||||||||||||
| log(Si/H) | |||||||||||||
| log(P/H) | |||||||||||||
| log(S/H) | |||||||||||||
| log(Sc/H) | |||||||||||||
| log(Ti/H) | |||||||||||||
| log(Cr/H) | |||||||||||||
| log(Mn/H) | |||||||||||||
| log(Fe/H) | |||||||||||||
| log(Ni/H) | |||||||||||||
| Parallax | [mas] | 3.19 (0.09) | 3.10 (0.1) | 3.19 (0.09) | |||||||||
| Distance | [pc] | 313.23 (8) | 322.69 (12) | 423.00 (29) | 313.22 (8) | ||||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 3.767730509 (0.07) | 3.753047217 (0.2) | 3.768 (0.07) | 3.3 | ||||||||
| Proper motion (declination) | [mas/yr] | -7.184825833 (0.08) | -6.872650844 (0.2) | -7.185 (0.08) | -12.1 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 15.73 (0.06) | ||||||||||||
| H magnitude | 14.97 (0.07) | ||||||||||||
| K magnitude | 14.82 (0.1) | ||||||||||||
| u magnitude | 17.89 (0.01) | 17.81 | 17.82 (0.01) | 17.81 (0.02) | 17.81 | 17.77 (0.02) | |||||||
| g magnitude | 17.77 (0.006) | 17.79 | 17.76 (0.006) | 17.79 (0.01) | 17.79 | 17.77 (0.01) | |||||||
| r magnitude | 17.99 (0.007) | 18.01 | 18.00 (0.007) | 18.01 (0.01) | 18.01 | 18.00 (0.01) | |||||||
| i magnitude | 17.63 (0.007) | 17.60 | 17.59 (0.007) | 17.60 (0.02) | 17.60 | 17.60 (0.02) | |||||||
| z magnitude | 17.09 (0.01) | 17.08 | 17.07 (0.01) | 17.08 (0.02) | 17.08 | 17.06 (0.02) | |||||||
| G magnitude | 17.66 (0.007) | 17.67 | 17.66 (0.003) | ||||||||||
| BP magnitude | 17.86 (0.007) | 17.84 | |||||||||||
| RP magnitude | 17.16 (0.007) | 17.16 | |||||||||||
| Pan g magnitude | 17.82 (0.005) | ||||||||||||
| Pan r magnitude | 18.01 (0.004) | ||||||||||||
| Pan i magnitude | 17.63 (0.003) | ||||||||||||
| Pan z magnitude | 17.20 (0.007) | ||||||||||||
| Pan y magnitude | 16.90 (0.007) | ||||||||||||
| E(B-V) | 0.033 | ||||||||||||
* 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.