Rho1 Arae

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Rho1 Arae
Diagram showing star positions and boundaries of the Ara constellation and its surroundings
The location of ρ1 Arae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 16h 56m 08.8405s[1]
Declination –50° 40′ 29.244″[1]
Apparent magnitude (V) 6.275[2]
Characteristics
Spectral type B3 Vnpe
U−B color index –0.691[2]
B−V color index +0.008[2]
Distance
640 ± 50 ly
(200 ± 20 pc)
Absolute magnitude (MV)−0.16[4]
Details
Myr
HIP 82868, HR 6274, NSV 8047, SAO 244280[9]
Database references
SIMBADdata

Rho1 Arae is the

Bortle Dark-Sky Scale, this means the star is just barely visible to the naked eye in dark rural skies. Based upon parallax measurements, it is about 640 light-years (200 parsecs) distant from the Sun, give or take a 50-light-year margin of error.[1]

A light curve for V846 Arae, plotted from TESS data[10]

This is a

emission lines, indicating this is a Be star. For Rho1 Arae, the emission lines are prominent and variable.[8]

Rho1 Arae has a

runaway star system. A scenario that it was ejected from the Scorpius–Centaurus OB association as a result of a past supernova explosion seems unlikely because of its binarity.[8]

References

  1. ^
    S2CID 18759600
    .
  2. ^
    Bibcode:1985A&AS...61..387K
    .
  3. Bibcode:1967IAUS...30...57E
    .
  4. S2CID 119257644
    .
  5. ^
    S2CID 118629873
    .
  6. S2CID 111387483
    .
  7. ^
    S2CID 118362423
    .
  8. ^
    doi:10.1088/0004-637X/721/1/469
    .
  9. ^ "rho01 Ara". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-08-01.{{cite web}}: CS1 maint: postscript (link)
  10. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Rho1_Arae&oldid=1086532829"