SDSS J170729.68+225721.8
All names: SDSS J170729.69+225721.9, Gaia DR2 4571305702281278464, SDSS J170729.68+225721.8, [HHD2009] SDSS J1707+2257, WD 1705+230, Gaia DR3 4571305702282164096, Gaia EDR3 4571305702282164096
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 07 29.68 (0.4) | 17 07 29.69 | 17 07 29.68 (0.6) | 17 07 29.68 | 17 07 29.69 (0.4) | 17 07 29.21 | 17 07 29.69 | ||||
| Declination | 22 57 21.74 (0.7) | 22 57 21.89 | 22 57 21.75 (0.8) | 22 57 21.82 | 22 57 22.04 (0.7) | 22 57 19.80 | 22 57 21.88 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA2.8 | DA+M | ||||||
| Effective temperature | [K] | 4992.0 | 18974.0 (2610) | 6301.0 (4) | |||||||
| log(g) | [cgs] | 6.98 | 7.50 (0.5) | 6.77 (0.3) | |||||||
| Mass | [M☉] | 0.166 | 0.39 (0.2) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| 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] | -2.68 (0.9) | -6.33 (1) | ||||||||
| Distance | [pc] | 509.00 (57) | |||||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -5.883640379 (0.6) | -0.606448202 (1) | -5.884 (0.6) | |||||||
| Proper motion (declination) | [mas/yr] | -18.94530253 (0.9) | -16.25155567 (2) | -18.945 (0.9) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | yes | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 20.52 (0.05) | 20.44 | 20.45 (0.06) | 20.43 | 20.44 (0.06) | ||||||
| g magnitude | 20.14 (0.02) | 20.19 | 20.17 (0.02) | 20.19 | 20.18 (0.02) | ||||||
| r magnitude | 19.88 (0.02) | 19.88 | 19.85 (0.02) | 19.87 | 19.88 (0.02) | ||||||
| i magnitude | 19.09 (0.02) | 19.09 | 19.07 (0.02) | 19.09 | 19.08 (0.02) | ||||||
| z magnitude | 18.49 (0.03) | 18.55 | 18.52 (0.03) | 18.55 | 18.54 (0.03) | ||||||
| G magnitude | 19.70 (0.06) | 19.66 | 19.70 (0.009) | ||||||||
| BP magnitude | 20.09 (0.06) | 20.11 | |||||||||
| RP magnitude | 18.64 (0.02) | 18.63 | |||||||||
| Pan g magnitude | 20.13 (0.01) | ||||||||||
| Pan r magnitude | 19.90 (0.01) | ||||||||||
| Pan i magnitude | 19.09 (0.006) | ||||||||||
| Pan z magnitude | 18.59 (0.02) | ||||||||||
| Pan y magnitude | 18.38 (0.03) | ||||||||||
| E(B-V) | 0.036 | ||||||||||
* Constant surface field
Special notes:
Spectra
Controls
Normalize at:
Normalize by mean flux
Range:
x:
to
y:
to
Spectra available:
Spectra without link are available upon request
Absorption lines
Photometric filters
BVRI
ugriz
Photometric fit
