Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation
Pictor
ι Pic A
Right ascension
04h 50m 55.32684s[1]
Declination
−53° 27′ 41.2300″[1]
Apparent magnitude (V)
5.63[2]
ι Pic B
Right ascension
04h 50m 56.49825s[1]
Declination
−53° 27′ 34.9159″[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: −98.707[1] mas/yr Dec.: +80.769[1] mas/yr
Parallax (π)
24.9211 ± 0.1559 mas[1]
Distance
130.9 ± 0.8 ly (40.1 ± 0.3 pc)
Absolute magnitude (MV)
2.50[2]
ι Pic B
Radial velocity (Rv)
23.3±1.0[3] km/s
Proper motion (μ)
RA: −98.707[1] mas/yr Dec.: +66.139[1] mas/yr
Parallax (π)
25.6610 ± 0.4106 mas[1]
Distance
127 ± 2 ly (39.0 ± 0.6 pc)
Absolute magnitude (MV)
3.30[2]
Details
ι Pic A
Mass
1.51[4]M☉
Radius
1.80+0.23 −0.11[1]R☉
Luminosity
7.2±0.1[1]L☉
Surface gravity (log g)
4.28±0.14[4] cgs
Temperature
7,331±249[4] K
Age
696[4] Myr
ι Pic B
Mass
2.76[4]M☉
Radius
1.48+0.04 −0.06[1]R☉
Luminosity
3.4±0.06[1]L☉
Surface gravity (log g)
4.24±0.14[4] cgs
Temperature
6,435±219[4] K
Age
516[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
SIMBAD
data
ι Pictoris, Latinized from Iota Pictoris, is a suspected multiple star system[6] in the southern Pictor constellation. It is visible to the naked eye as a dim, yellow-white-hued point of light with a combined apparent visual magnitude of 5.28.[6] The two resolvable components have an angular separation of 8.2 arcseconds, equivalent to a physical projected separation of around 450 AU.[7] They are located at a distance of around 127–131 light-years from the Sun, based on parallax.[1]
The two visible components appear as F-type main-sequence stars: the magnitude 5.63 component A has a stellar classification of F0 V, while the cooler, fainter secondary is of class F4 V.[2] Both are themselves are suspected spectroscopic binary stars consisting of roughly equal components.[6] Component B actually has a higher estimated mass than Component A, although the radius of B is smaller. They are both more luminous than the Sun, and have an estimated age of around 500–600 million years.[4]
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^ abcdefghijCite error: The named reference corbally1984 was invoked but never defined (see the help page).
^ abCite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
^ abcdefghiCite error: The named reference David2015 was invoked but never defined (see the help page).
^Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ abcCite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
^Cite error: The named reference Tokovinin2010 was invoked but never defined (see the help page).
ι Pictoris, Latinized from IotaPictoris, is a suspected multiple star system in the southern Pictor constellation. It is visible to the naked eye as a...
constellation of Pictor, positioned less than a degree to the east of IotaPictoris, and is undergoing a starburst. With an apparent visual magnitude of...
axes are oriented differently. (See Poles of astronomical bodies.) Alpha Pictoris is the south pole star of Mercury while Omicron Draconis is its north star...
The telescope's scientific discoveries include direct imaging of Beta Pictoris b, the first extrasolar planet so imaged, tracking individual stars moving...
Iota Herculis (ι Herculis, ι Her) is a fourth-magnitude variable star system in the constellation Hercules, consisting of at least four stars all about...
Microscopii are probably a wide triple system and members of the Beta Pictoris moving group. Nicknamed "Speedy Mic", BO Microscopii is a star with an...
star system 3.29 2.97 Mu Leporis Star 3.29 Iota Draconis Star Suspected variable star 3.30 Alpha Pictoris Star 3.30 Beta Phoenicis Binary star system...
have brown dwarf companions. A member of the 12-million-year-old Beta Pictoris moving group of stars that share a common proper motion through space,...
Kiefer, Flavien (2019-08-19). "Evidence for an additional planet in the β Pictoris system". Nature Astronomy. 3 (12): 1135–1142. Bibcode:2019NatAs...3.1135L...
Defrère, D.; et al. (2011). "Hot exozodiacal dust resolved around Vega with IOTA/IONIC". Astronomy and Astrophysics. 534: A5. arXiv:1108.3698. Bibcode:2011A&A...
its structure modeled as stratospheric. Iota Draconis b: The first planet discovered around the giant star Iota Draconis, an orange giant. This provides...
stars found that 75% of the Mira stars which could be resolved using the IOTA telescope are not spherically symmetric, a result which is consistent with...