2MASS J09311831+0912409
All names: SDSS J093118.28+091241.6, Gaia DR2 588990756749380864, 2MASS J09311831+0912409, WD 0928+094, Gaia EDR3 588990756749380864, SDSS J093118.37+091240.6, Gaia DR2 588990756748950656, SDSS J093118.38+091240.7
| Parameter | Unit | Gaia EDR3 | MWDD H | Gaia DR2 | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | SDSS DR12 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 31 18.37 (0.2) | 09 31 18.37 (0.2) | 09 31 18.37 | 09 31 18.38 | 09 31 18.29 (0.6) | 09 31 18.38 | 09 31 18.43 | 09 31 18.38 | |||
| Declination | 09 12 40.63 (0.1) | 09 12 40.63 (0.2) | 09 12 40.61 | 09 12 40.66 | 09 12 41.60 (0.6) | 09 12 40.67 | 09 12 38.88 | 09 12 40.68 | |||
| Spectral type | DA+M | DA+M | DA | dM | DA_auto | DA | DAH:M | ||||
| Effective temperature | [K] | 19327.0 | 19640.0 (441) | 20500.0 (420) | 20421.0 (281) | 20622.0 (304) | |||||
| log(g) | [cgs] | 8.05 | 7.92 (0.09) | 7.94 (0.06) | 7.78 (0.04) | 7.84 (0.05) | |||||
| Mass | [M☉] | 0.648 | 0.58 (0.05) | 0.59 (0.03) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0891 | 0.0575 | ||||||||
| 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] | 2.97 (0.2) | 3.22 (0.3) | 3.26 (0.6) | |||||||
| Distance | [pc] | 336.42 (22) | 310.43 (25) | 714.00 (117) | 306.63 (53) | ||||||
| Composition | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -4.529799948 (0.2) | -4.621784163 (0.4) | -1.051 (1) | 9.8 | ||||||
| Proper motion (declination) | [mas/yr] | -4.50744338 (0.2) | -4.512927678 (0.4) | -4.53 (0.9) | -9.9 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | ||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.79 (0.2) | ||||||||||
| H magnitude | 16.23 (0.2) | ||||||||||
| K magnitude | 15.64 (0.2) | ||||||||||
| u magnitude | 18.27 | 18.28 (0.01) | 24.64 (2) | 18.27 (0.03) | 18.27 | 18.30 (0.02) | |||||
| g magnitude | 18.22 | 18.25 (0.007) | 21.86 (0.09) | 18.22 (0.01) | 18.22 | 18.25 (0.01) | |||||
| r magnitude | 18.56 | 18.52 (0.008) | 20.92 (0.04) | 18.56 (0.02) | 18.56 | 18.58 (0.02) | |||||
| i magnitude | 18.82 | 18.89 (0.01) | 18.94 (0.01) | 18.82 (0.05) | 18.82 | 18.84 (0.05) | |||||
| z magnitude | 19.14 | 19.04 (0.05) | 18.15 (0.02) | 19.14 (0.2) | 19.14 | 19.16 (0.1) | |||||
| G magnitude | 18.43 (0.01) | 18.48 | 19.65 (0.009) | ||||||||
| BP magnitude | 18.32 (0.01) | 18.29 | |||||||||
| RP magnitude | 18.26 (0.04) | 18.05 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
* Constant surface field
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