U Equulei

U Equulei

A visual band light curve for U Equulei, plotted from OMC data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Equuleus
Right ascension 20h 57m 16.28s[2]
Declination 02° 58′ 44.6″[2]
Apparent magnitude (V) 9 - 13[3]
Characteristics
Evolutionary stage (post?) AGB[4]
Spectral type G - K III[4]
B−V color index +1.6[4]
Variable type Lb[3]
Astrometry
Radial velocity (Rv)−75[5] km/s
Proper motion (μ) RA: 10.490[6] mas/yr
Dec.: −10.433[6] mas/yr
Parallax (π)0.0985 ± 0.0750 mas[6]
Distance3,340±700[7] pc
Details
Luminosity6,000[7] L☉
Temperature5,005[6] K
Other designations
IRAS 20547+0247, 2MASS J20571628+0258445, Gaia DR2 1731164844433296128
Database references
SIMBADdata

U Equulei (U Equ / IRAS 20547 +0247) is a variable star in the Equuleus constellation with an apparent magnitude of +14.50 in the B band. It lies at an estimated distance of 5,000 light-years (1,500 parsecs) from the Solar System.

  1. ^ Cite error: The named reference OMCarchive was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference 2mass was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference geballe was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference barnbaum was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference kim2013 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference dr2 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference vickers2015 was invoked but never defined (see the help page).