Nembus
Observer: GDAA
Spectrum Data
FITS Header Metadata
Show FITS Header
| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 3499 |
| CRPIX1 | 1 |
| CDELT1 | 1.4652823376751 |
| CRVAL1 | 3870.93359375 |
| 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 | 51 And |
| DATE-OBS | 2026-02-16T17:34:17 |
| EXPTIME | 360 |
| BSS_VHEL | 0 |
FITS Spectral Image
Click image to open in new tab for zooming
Calibrated Spectrum
Click image to open in new tab for zooming
Observation Image
Click image to open in new tab for zooming
Metadata
| Field | Value |
|---|---|
| Object Name | Nembus |
| Observer | GDAA |
| Site | Sandvreten Observatory |
| Equipment | T41 |
| Observation Date | 2026-02-16 17:34 |
| Julian Date | 2461088.23194 |
| Exposure Time | 360.0 seconds |
| Created | 2026-03-08 12:06 |
| Updated | 2026-03-08 12:06 |
Notes
External links 51 Andromedae Article Talk Read Edit View history Tools Appearance hide Birthday mode (Baby Globe) Disabled Enabled Learn more about Birthday mode Text Small Standard Large Width Standard Wide Color (beta) Automatic Light Dark From Wikipedia, the free encyclopedia (Redirected from 51 And) 51 Andromedae Location of 51 Andromedae (circled) Observation data Epoch J2000 Equinox J2000 Constellation Andromeda[1] Right ascension 01h 37m 59.56074s[2] Declination +48° 37′ 41.5798″[2] Apparent magnitude (V) 3.57[3] Characteristics Spectral type K3- III CN0.5[4] U−B color index +1.44[3] B−V color index +1.28[3] Astrometry Radial velocity (Rv) 18.41[5] km/s Proper motion (μ) RA: +61.334[2] mas/yr Dec.: -113.100[2] mas/yr Parallax (π) 19.2489±0.4077 mas[2] Distance 169 ± 4 ly (52 ± 1 pc) Absolute magnitude (MV) −0.04[6] Details[7] Mass 1.75±0.15 M☉ Radius 21.30±0.21 R☉ Luminosity 142.1±7.6 L☉ Surface gravity (log g) 2.01 cgs Temperature 4,316±54 K Metallicity [Fe/H] 0.07 dex Age 1.70±0.40 Gyr Other designations υ Per, 51 And, BD+47°467, HD 9927, HIP 7607, HR 464, SAO 37375, PPM 44238[8] Database references SIMBAD data 51 Andromedae, abbreviated 51 And and formally named Nembus /ˈnɛmbəs/,[9] is the 5th brightest star in the northern constellation of Andromeda, very slightly dimmer than the Andromeda Galaxy also being of 4th magnitude. It is an orange K-type giant star with an apparent magnitude of +3.57 and is about 169 light-years from the Earth/solar system. At an estimated age of 1.7 billion years, this is an evolved red giant star with a stellar classification of K3- III CN0.5.[4] The suffix notation indicates a mild enhancement of cyanogen absorption lines in its spectrum. This star has 1.8 times the mass of the Sun and it has expanded to 21.3 times the Sun's radius. It is radiating 142 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,316 K (source: Wikipedia)