BD+43 100B

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

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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.