All names: Gaia DR3 1191504471436192512, [HH95] NN Ser-9, ATO J238.2337+12.9121, Gaia EDR3 1191504471436192512, PTF1 J155256.11+125443.9, ZTF J155256.08+125443.4, V* NN Ser, Gaia DR2 1191504471436192512, CRTS J155256.0+125444, WISE J155256.12+125443.4, 2MASS J15525613+1254446, WISEA J155256.11+125443.6, WD 1550+130, PG 1550+131, TIC 172608008
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 15 52 56.09 (0.05) | 15 52 56.09 (0.08) | 15 52 56.12 (0.05) | 15 52 55.73 | ||
| Declination | 12 54 43.48 (0.06) | 12 54 43.51 (0.07) | 12 54 44.43 (0.06) | 12 54 50.04 | ||
| Spectral type | DAO1+M4 | DA+dM | ||||
| Effective temperature | [K] | |||||
| log(g) | [cgs] | |||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 1.94 (0.07) | 1.92 (0.1) | 1.94 (0.07) | ||
| Distance | [pc] | 514.45 (18) | 521.76 (27) | 514.46 (18) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -30.170081 (0.06) | -30.085 (0.2) | -30.17 (0.06) | ||
| Proper motion (declination) | [mas/yr] | -59.0840509 (0.06) | -59.261 (0.1) | -59.084 (0.06) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | |||||
| B magnitude | ||||||
| V magnitude | 16.51 | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 16.91 (0.2) | |||||
| H magnitude | 16.25 (0.2) | |||||
| K magnitude | 16.17 (0.3) | |||||
| u magnitude | 24.56 | |||||
| g magnitude | 16.43 | 16.62 | ||||
| r magnitude | 16.75 | 21.91 | ||||
| i magnitude | 20.31 | |||||
| z magnitude | 18.88 | |||||
| G magnitude | 16.53 (0.03) | 16.59 | 16.53 (0.01) | |||
| BP magnitude | 16.43 (0.03) | 16.39 | ||||
| RP magnitude | 16.65 (0.07) | 16.64 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.035 | |||||
* 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.