Iota Pictoris

Iota Pictoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pictor
ι Pic A
Right ascension 04h 50m 55.30763s[1]
Declination −53° 27′ 41.4296″[1]
Apparent magnitude (V) 5.63[2]
ι Pic B
Right ascension 04h 50m 56.50040s[1]
Declination −53° 27′ 34.8620″[1]
Apparent magnitude (V) 6.47[2]
Characteristics
ι Pic A
Spectral type F0 V[2]
U−B color index 0.06[2]
B−V color index 0.32[2]
ι Pic B
Spectral type F4 V[2]
B−V color index 0.37[2]
Astrometry
ι Pic A
Radial velocity (Rv)8.6±3.4[3] km/s
Proper motion (μ) RA: −80.62[1] mas/yr
Dec.: +87.78[1] mas/yr
Parallax (π)24.06 ± 2.01[1] mas
Distance140 ± 10 ly
(42 ± 3 pc)
Absolute magnitude (MV)2.50[2]
ι Pic B
Radial velocity (Rv)23.3±1.0[3] km/s
Proper motion (μ) RA: −79.06[1] mas/yr
Dec.: +88.76[1] mas/yr
Parallax (π)25.95 ± 1.76[1] mas
Distance126 ± 9 ly
(39 ± 3 pc)
Absolute magnitude (MV)3.30[2]
Details
ι Pic A
Mass1.51[4] M☉
Surface gravity (log g)4.28[4] cgs
Temperature7,331±249[4] K
Age696[4] Myr
ι Pic B
Mass2.76[4] M☉
Surface gravity (log g)4.24[4] cgs
Temperature6,435±219[4] K
Age516[4] Myr
Other designations
ι Pic, CPD−53° 760, WDS J04509-5328AB[5]
ι Pic A: HD 31203, HIP 22531, HR 1563, SAO 233709
ι Pic B: HD 31204, HIP 22534, HR 1564, SAO 233710
Database references
SIMBADdata

Iota Pictoris (ι Pictoris) is a binary star system in the Pictor constellation.

The brighter star, Iota Pictoris A, is an F0V star with apparent magnitude about 5.61, while the dimmer star, Iota Pictoris B, is a cooler F4V star with apparent magnitude about 6.24.[6] They are separated by about 12.9",[6] about 500 AU.

References

  1. 1 2 3 4 5 6 7 8 9 10 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 4 5 6 7 8 9 Corbally, C. J. (1984), "Close visual binaries. I - MK classifications", Astrophysical Journal Supplement Series, 55: 657, Bibcode:1984ApJS...55..657C, doi:10.1086/190973.
  3. 1 2 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
  4. 1 2 3 4 5 6 7 8 David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146.
  5. ↑ "iot Pic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-21.
    • "* iot Pic A". SIMBAD. Centre de données astronomiques de Strasbourg.
    • "* iot Pic B". SIMBAD. Centre de données astronomiques de Strasbourg.
  6. 1 2 Tokovinin, Andrei; et al. (August 2010), "Subsystems in Nearby Solar-type Wide Binaries", The Astronomical Journal, 140 (2): 510–517, arXiv:1006.1253, Bibcode:2010AJ....140..510T, doi:10.1088/0004-6256/140/2/510.
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