Alpheratz
Observer: GDAA
Spectrum Data
FITS Header Metadata
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| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 2754 |
| CRPIX1 | 1 |
| CDELT1 | 1.45258067193743 |
| CRVAL1 | 3800.46044921875 |
| CTYPE1 | Wavelength |
| CUNIT1 | Angstrom |
| SWCREATE | RSpec 2.3.1.76 |
| VERSION | RSpec 2.3.1.76 |
| OBSERVER | DGRA |
| BSS_SITE | Sandvreten Observatory |
| BSS_INST | T41 |
| OBJNAME | alp And |
| DATE-OBS | 2026-02-03T16:59:40 |
| EXPTIME | 60 |
| BSS_VHEL | 0 |
FITS Spectral Image
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Calibrated Spectrum
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Observation Image
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Metadata
| Field | Value |
|---|---|
| Object Name | Alpheratz |
| Observer | GDAA |
| Site | Sandvreten Observatory |
| Equipment | T41 |
| Observation Date | 2026-02-03 16:59 |
| Julian Date | 2461075.20764 |
| Exposure Time | 60.0 seconds |
| Created | 2026-02-22 10:51 |
| Updated | 2026-02-22 10:51 |
Notes
Alpha And. The two stars are now known to orbit each other with a period of 96.9 days.[7] The larger, brighter star, called the primary, has a spectral type of B8IV-VHgMn,[30] a mass of approximately 3.6 solar masses,[7] a surface temperature of about 11,900 K (or 13,850 K[10]), and, measured over all wavelengths, a luminosity of about 160 times the Sun's.[5] Its smaller, fainter companion, the secondary, has a mass of approximately 1.9 solar masses[7] and a surface temperature of about 7,900 K, and, again measured over all wavelengths, a luminosity of about 15 times the Sun's. It is a late-type A star whose spectral type is estimated as A7V. (source: Wikipedia)