All names: UCAC4 503-147832, UCAC2 35679819, TIC 257204308, 2MASS J22485026+1032433, SDSS J224850.27+103243.4, USNO-B1.0 1005-00628263, Gaia EDR3 2718228387243575168, Gaia DR2 2718228387243575168, PG2246+103, Gaia DR3 2718228387243575168, PG 2246+103
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 48 50.27 (0.05) | 22 48 50.29 | 22 48 50.27 (0.05) | ||
| Declination | 10 32 43.31 (0.04) | 10 32 44.00 | 10 32 43.40 (0.04) | ||
| Spectral type | sdO | sdO | |||
| 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] | 0.80 (0.06) | 0.57 (0.2) | 0.80 (0.06) | |
| Distance | [pc] | 1251.09 (97) | 1752.54 (518) | 1251.09 (97) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.259 (0.07) | -0.233 (0.1) | -0.259 (0.07) | |
| Proper motion (declination) | [mas/yr] | -5.569 (0.05) | -5.455 (0.1) | -5.569 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.10 | ||||
| V magnitude | |||||
| R magnitude | 15.40 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.69 (0.07) | 15.69 (0.07) | |||
| H magnitude | 15.95 (0.2) | 15.95 (0.2) | |||
| K magnitude | 15.23 | ||||
| u magnitude | 14.56 (0.004) | ||||
| g magnitude | 14.84 (0.003) | ||||
| r magnitude | 15.27 (0.003) | ||||
| i magnitude | 15.57 (0.004) | ||||
| z magnitude | 15.86 (0.007) | ||||
| G magnitude | 15.05 (0.003) | 15.07 (0.001) | 15.05 (0.003) | ||
| BP magnitude | 14.93 (0.004) | 14.89 (0.009) | |||
| RP magnitude | 15.26 (0.005) | 15.27 (0.005) | |||
| Pan g magnitude | 14.91 (0.003) | ||||
| Pan r magnitude | 15.26 (0.002) | ||||
| Pan i magnitude | 15.61 (0.002) | ||||
| Pan z magnitude | 15.85 (0.002) | ||||
| Pan y magnitude | 16.02 (0.006) | ||||
| E(B-V) | 0.063 | ||||
* 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.