SDSS J084852.09+390441.2
All names: SDSS J084852.10+390441.3, Gaia EDR3 911993596150967680, GALEX J084852.0+390441, Gaia DR3 911993596150967680, Gaia DR2 911993596150967680, SDSS J084852.09+390441.3, WD 0845+392, SDSS J084852.09+390441.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 48 52.14 (0.3) | 08 48 52.10 | 08 48 52.14 (0.4) | 08 48 52.09 (0.3) | 08 48 52.10 | 08 48 52.32 | 08 48 52.10 | ||||||
| Declination | 39 04 40.90 (0.2) | 39 04 41.40 | 39 04 40.92 (0.3) | 39 04 41.39 (0.2) | 39 04 41.26 | 39 04 40.08 | 39 04 41.30 | ||||||
| Spectral type | DC: | DC: | DC | DC: | DC: | DC:M | DC | ||||||
| Effective temperature | [K] | 10208.0 | 10132.0 | 11173.0 (344) | 10646.0 (367) | ||||||||
| log(g) | [cgs] | 8.33 | 8.26 | 8.13 (0.4) | 8.10 (0.7) | ||||||||
| Mass | [M☉] | 0.808 | 0.743 | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.9386 | 0.8777 | ||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 3.95 (0.3) | 4.21 (0.5) | 3.95 (0.3) | |||||||||
| Distance | [pc] | 252.90 (21) | 237.59 (27) | 252.90 (21) | |||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 34.98704671 (0.3) | 35.41482416 (0.7) | 34.987 (0.3) | 31.8 | ||||||||
| Proper motion (declination) | [mas/yr] | -30.60220115 (0.3) | -31.10883536 (0.5) | -30.602 (0.3) | -36.6 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.61 (0.03) | 19.61 (0.03) | 19.59 (0.03) | 19.59 | 19.61 (0.03) | ||||||||
| g magnitude | 19.46 (0.01) | 19.46 (0.01) | 19.50 (0.03) | 19.50 | 19.49 (0.03) | ||||||||
| r magnitude | 19.56 (0.01) | 19.56 (0.01) | 19.57 (0.03) | 19.57 | 19.56 (0.03) | ||||||||
| i magnitude | 19.73 (0.02) | 19.73 (0.02) | 19.74 (0.02) | 19.74 | 19.73 (0.02) | ||||||||
| z magnitude | 19.91 (0.08) | 19.91 (0.08) | 19.92 (0.07) | 19.92 | 19.89 (0.07) | ||||||||
| G magnitude | 19.47 (0.04) | 19.52 | 19.47 (0.004) | ||||||||||
| BP magnitude | 19.52 (0.04) | 19.49 | |||||||||||
| RP magnitude | 19.57 (0.06) | 19.46 | |||||||||||
| Pan g magnitude | 19.50 (0.01) | ||||||||||||
| Pan r magnitude | 19.56 (0.01) | ||||||||||||
| Pan i magnitude | 19.73 (0.008) | ||||||||||||
| Pan z magnitude | 19.90 (0.02) | ||||||||||||
| Pan y magnitude | 19.95 (0.05) | ||||||||||||
| E(B-V) | 0.015 | ||||||||||||
* Constant surface field
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