All names: Gaia DR1 3499149197952168832, PN A66 35, PN G303.6+40.0, TYC 6697-77-1, UCAC2 22704512, PN A55 24, PN VV' 112, 2MASS J12533279-2252224, PMC 90-93 6472, GSC2 S2033100229, PPM 260942, SH 2-313, YZ 112 9629, CPD-22 5522, HIC 62905, TIC 5966674, WD 1250-226, HIP 62905, GSC 06697-00077, V* LW Hya, Gaia DR3 3499149202247569536, PK 303+40 1, GEN# -0.02203467, CD-22 9659, SAO 181201, [DWS97] Hya 3, BD-22 3467, Gaia EDR3 3499149202247569536, Gaia DR2 3499149202247569536
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 12 53 32.72 (0.3) | 12 53 32.72 (0.1) | 12 53 32.79 (0.3) | 12 53 32.09 | ||
| Declination | -22 52 22.78 (0.2) | -22 52 22.77 (0.09) | -22 52 22.57 (0.2) | -22 52 22.44 | ||
| Spectral type | G8III-IV+DAO | DAO.63 | ||||
| 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] | 7.30 (0.3) | 7.99 (0.1) | 7.30 (0.3) | ||
| Distance | [pc] | 136.93 (6) | 125.23 (2) | 136.93 (6) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -56.02098944 (0.4) | -54.566 (0.2) | -56.021 (0.4) | ||
| Proper motion (declination) | [mas/yr] | -13.0530678 (0.3) | -10.097 (0.2) | -13.053 (0.3) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | |||||
| B magnitude | 10.52 | |||||
| V magnitude | 9.69 | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 7.90 (0.02) | |||||
| H magnitude | 7.41 (0.05) | |||||
| K magnitude | 7.26 (0.02) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 9.36 (0.006) | 9.35 | 9.36 (0.003) | |||
| BP magnitude | 9.85 (0.006) | 9.87 | ||||
| RP magnitude | 8.70 (0.005) | 8.72 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.044 | |||||
* 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.