TIC 168789840

TIC 168789840
Location of TIC 168789840 (red circle)
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 04h 14m 04.867s[1]
Declination −31° 55′ 22.36″[1]
Apparent magnitude (V) 11.51[2]
Astrometry
Proper motion (μ) RA: 12.082[3] mas/yr
Dec.: 9.513[3] mas/yr
Parallax (π)1.6861 ± 0.4296 mas[3]
Distance1900±225 ly
(584±70[4] pc)
Details[4]
System
Age3.160±0.624 Gyr
A1
Mass1.25±0.05 M☉
Radius1.49±0.07 R☉
Luminosity3.39 L☉
Surface gravity (log g)4.18 cgs
Temperature6,400±125 K
Rotational velocity (v sin i)48.5 km/s
A2
Mass0.56±0.04 M☉
Radius0.52±0.04 R☉
Luminosity0.07 L☉
Surface gravity (log g)4.73 cgs
Temperature3,923±100 K
Rotational velocity (v sin i)17.5 km/s
B1
Mass1.30±0.08 M☉
Radius1.69±0.22 R☉
Luminosity3.95 L☉
Surface gravity (log g)4.12 cgs
Temperature6,365±170 K
Rotational velocity (v sin i)10.1 km/s
B2
Mass0.66±0.03 M☉
Radius0.62±0.02 R☉
Luminosity0.12 L☉
Surface gravity (log g)4.67 cgs
Temperature4,290±110 K
Rotational velocity (v sin i)3.8 km/s
C1
Mass1.23±0.10 M☉
Radius1.45±0.28 R☉
Luminosity2.74 L☉
Surface gravity (log g)4.24 cgs
Temperature6,350±160 K
Rotational velocity (v sin i)51.5 km/s
C2
Mass0.59±0.07 M☉
Radius0.56±0.07 R☉
Luminosity0.07 L☉
Surface gravity (log g)4.72 cgs
Temperature3,889±190 K
Rotational velocity (v sin i)20.9 km/s
Other designations
2MASS J04140483-3155223, GSC 07037-00089, TYC 7037-89-1, RAVE J041404.8-315523, Gaia DR2 4882954370431549824
Database references
SIMBADdata

TIC 168789840, also known as TYC 7037-89-1,[5] is a stellar system with six stars.[6][4] Three pairs of binary stars circle a common barycenter. While other systems with three pairs of stars have been discovered, this was the first system where the stars can be observed eclipsing one another, as the Earth lies approximately on their planes of rotation.[5]

  1. ^ a b Cite error: The named reference dr2 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference tycho2 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference edr3a was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference arxiv2101-03433 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Nasa2021-01-27 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference nytimes2021-01-23 was invoked but never defined (see the help page).