All names: BD+43 100B, USNO-B1.0 1347-00011545, WD 0030+442, G172-4, Gaia DR3 388602146952607360, NLTT 1762, EGGR 306, J0033+4444, Gaia EDR3 388602146952607360, WDJ003302.85+444413.14, WD 0030+44, TIC 191145238, GEN# +9.80172004, WD 0030+444, Gaia DR2 388602146952607360, 2MASS J00330277+4444131, CCDM J00330+4444B, LSPM J0033+4444, WDS J00330+4442B, ** LDS 9093B, G 172-4
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 00 33 03.18 (0.06) | 00 33 03.17 (0.1) | 00 33 03.18 | 00 33 02.85 (0.06) | 00 33 03.17 | 00 33 01.85 | ||||||||
Declination | 44 44 12.42 (0.04) | 44 44 12.44 (0.06) | 44 44 12.42 | 44 44 13.14 (0.04) | 44 44 12.44 | 44 44 14.64 | ||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA4.8 | DA5 | ||||||
Effective temperature | [K] | 10005.0 (46) | 9994.0 | 10277.0 (151) | 10270.0 (150) | 10480.0 (152) | 10414.0 (95) | |||||||
log(g) | [cgs] | 7.97 (0.01) | 7.97 | 8.05 (0.05) | 8.03 (0.05) | 8.27 (0.05) | 8.03 (0.01) | |||||||
Mass | [M☉] | 0.583 (0.01) | 0.582 | 0.6 (0.1) | 0.77 (0.03) | 0.621 (0.01) | ||||||||
log(Luminosity) | [L☉] | |||||||||||||
Cooling age | [Gyr] | 0.6100 | 0.5790 | |||||||||||
log(H/He) | ||||||||||||||
log(C/He) | ||||||||||||||
log(Ca/He) | ||||||||||||||
log(Ca/H) | ||||||||||||||
log(C/H) | ||||||||||||||
log(N/H) | ||||||||||||||
log(O/H) | ||||||||||||||
log(Na/H) | ||||||||||||||
log(Mg/H) | ||||||||||||||
log(Al/H) | ||||||||||||||
log(Si/H) | ||||||||||||||
log(P/H) | ||||||||||||||
log(S/H) | ||||||||||||||
log(Sc/H) | ||||||||||||||
log(Ti/H) | ||||||||||||||
log(Cr/H) | ||||||||||||||
log(Mn/H) | ||||||||||||||
log(Fe/H) | ||||||||||||||
log(Ni/H) | ||||||||||||||
Parallax | [mas] | 13.02 (0.08) | 13.02 (0.1) | 13.02 (0.1) | 13.97 (0.6) | 13.02 | 13.02 (0.08) | 13.02 (0.1) | 9.50 (2) | |||||
Distance | [pc] | 76.82 (0.5) | 76.80 (0.8) | 76.80 (0.8) | 71.60 (4) | 71.58 (3) | 60.00 | 76.82 | 76.82 (0.5) | 76.80 (0.8) | 105.26 (22) | |||
Composition | H | H | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | 219.8767808 (0.06) | 219.7913663 (0.1) | 219.877 (0.07) | 219.7913663 | |||||||||
Proper motion (declination) | [mas/yr] | -45.23427498 (0.05) | -45.34247008 (0.1) | -45.234 (0.04) | -45.34247008 | |||||||||
Variability | NOV | |||||||||||||
Magnetic | ||||||||||||||
Bd | [MG] | |||||||||||||
Infrared excess (disk) | ||||||||||||||
Binarity | yes | |||||||||||||
B magnitude | 16.89 | |||||||||||||
V magnitude | 16.44 (0.05) | |||||||||||||
R magnitude | 16.80 | |||||||||||||
I magnitude | ||||||||||||||
J magnitude | 16.48 (0.01) | 16.67 (0.1) | ||||||||||||
H magnitude | 16.16 (0.2) | 16.16 (0.2) | ||||||||||||
K magnitude | ||||||||||||||
u magnitude | ||||||||||||||
g magnitude | ||||||||||||||
r magnitude | ||||||||||||||
i magnitude | ||||||||||||||
z magnitude | ||||||||||||||
G magnitude | 16.54 (0.004) | 16.56 | 16.55 (0.002) | 16.54 | 16.54 (0.003) | 16.56 | ||||||||
BP magnitude | 16.59 (0.004) | 16.60 | 16.60 | |||||||||||
RP magnitude | 16.46 (0.008) | 16.47 | 16.47 | |||||||||||
Pan g magnitude | 16.54 (0.004) | 16.54 (0.003) | ||||||||||||
Pan r magnitude | 16.64 (0.006) | 16.64 (0.005) | ||||||||||||
Pan i magnitude | 16.78 (0.003) | 16.78 (0.003) | ||||||||||||
Pan z magnitude | 16.95 (0.004) | 16.95 (0.004) | ||||||||||||
Pan y magnitude | 17.05 (0.005) | 17.05 (0.006) | ||||||||||||
E(B-V) | 0.004 |
* 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.