WD 1225+421
All names: USNO-B1.0 1318-00253270, LSPM J1228+4150, USNO-B1.0 1318-00253272, Gaia DR3 1534836250044023168, J1228+4150, GSC2U J122810.3+415003, WD 1225+421, SDSS J122809.98+415003.8, LP 217-20, Gaia DR2 1534836250044023168, Gaia EDR3 1534836250044023168, GALEX J122810.0+415001, WDJ122810.06+415003.55, NLTT 30830
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 28 09.67 (0.1) | 12 28 09.69 (0.2) | 12 28 09.67 | 12 28 10.06 (0.1) | 12 28 09.69 | 12 28 09.72 | ||||||
| Declination | 41 50 04.52 (0.1) | 41 50 04.48 (0.1) | 41 50 04.52 | 41 50 03.54 (0.1) | 41 50 04.48 | 41 50 00.96 | ||||||
| Spectral type | DC | DC | DC | DA | DC | DC | ||||||
| Effective temperature | [K] | 5580.0 (37) | 5752.0 | 5489.0 | 5718.0 (100) | |||||||
| log(g) | [cgs] | 7.94 (0.03) | 8.06 | 7.89 | 8.03 (0.04) | |||||||
| Mass | [M☉] | 0.534 (0.02) | 0.623 | 0.505 | 0.607 (0.04) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 3.3000 | 2.9490 | 3.0880 | ||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(N/He) | ||||||||||||
| log(O/He) | ||||||||||||
| log(Na/He) | ||||||||||||
| log(Mg/He) | ||||||||||||
| log(Al/He) | ||||||||||||
| log(Si/He) | ||||||||||||
| log(P/He) | ||||||||||||
| log(S/He) | ||||||||||||
| log(Cl/He) | ||||||||||||
| log(Sc/He) | ||||||||||||
| log(Ti/He) | ||||||||||||
| log(V/He) | ||||||||||||
| log(Cr/He) | ||||||||||||
| log(Mn/He) | ||||||||||||
| log(Fe/He) | ||||||||||||
| log(Co/He) | ||||||||||||
| log(Ni/He) | ||||||||||||
| log(Cu/He) | ||||||||||||
| log(Zn/He) | ||||||||||||
| log(Ga/He) | ||||||||||||
| log(Ge/He) | ||||||||||||
| log(Sr/He) | ||||||||||||
| Parallax | [mas] | 13.88 (0.2) | 13.70 (0.2) | 13.70 (0.2) | 13.88 | 13.88 (0.2) | 13.70 (0.2) | |||||
| Distance | [pc] | 72.03 (1) | 72.99 (1) | 72.99 (1) | 72.03 | 72.03 (1) | 72.99 (1) | |||||
| Composition | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -268.9736304 (0.2) | -269.2901942 (0.4) | -268.974 (0.2) | -269.2901942 | |||||||
| Proper motion (declination) | [mas/yr] | 60.93913776 (0.2) | 60.51761907 (0.3) | 60.939 (0.2) | 60.51761907 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 19.20 | |||||||||||
| V magnitude | 18.78 | |||||||||||
| R magnitude | 18.60 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.69 (0.04) | |||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.90 (0.04) | 19.90 (0.04) | 19.90 (0.04) | 19.89 | ||||||||
| g magnitude | 19.01 (0.01) | 19.01 (0.01) | 19.02 | |||||||||
| r magnitude | 18.57 (0.009) | 18.57 (0.009) | 18.57 | |||||||||
| i magnitude | 18.40 (0.01) | 18.40 (0.01) | 18.41 | |||||||||
| z magnitude | 18.27 (0.03) | 18.27 (0.03) | 18.29 | |||||||||
| G magnitude | 18.60 (0.02) | 18.62 | 18.60 | 18.60 (0.003) | 18.62 | |||||||
| BP magnitude | 18.93 (0.02) | 18.90 | 18.90 | |||||||||
| RP magnitude | 18.05 (0.03) | 18.04 | 18.04 | |||||||||
| Pan g magnitude | 18.98 (0.008) | 18.98 (0.007) | ||||||||||
| Pan r magnitude | 18.57 (0.01) | 18.57 (0.01) | ||||||||||
| Pan i magnitude | 18.43 (0.007) | 18.43 (0.007) | ||||||||||
| Pan z magnitude | 18.41 (0.008) | 18.41 (0.008) | ||||||||||
| Pan y magnitude | 18.42 (0.02) | 18.42 (0.02) | ||||||||||
| E(B-V) | 0.003 | |||||||||||
* 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
