FY 1061

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Star
GJ 1061
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Right ascension 03 h 35 m 59.7 s
declination −44 ° 30 ′ 45.7 ″
Apparent brightness 13.07 likes
Typing
rel. Brightness
(G-band) 		10.99 likes
rel. Brightness
(J-band) 		7.52 mag
Known exoplanets 3
B − V color index 1.91 
U − B color index 1.24 
R − I index 1.98 
Spectral class M5.5 V
Variable star type BY 
Astrometry
Radial velocity −20 km / s
parallax 272.24 ± 0.07  mas
distance 11,974 ± 0,003  Lj
3.67  pc
Visual absolute brightness M vis 15.26 mag
Proper movement 
Rec. Share: 745.28 ± 0.12  mas / a
Dec. portion: −373.67 ± 0.14  mas / a
Physical Properties
Dimensions (0.12 ± 0.01)  M ☉
radius (0.156 ± 0.005)  R ☉
Luminosity

(1.7 ± 0.1 × 10 −3 )  L ☉

Effective temperature (~ 3000)  K
Metallicity [Fe / H] (−0.08 ± 0.08)
Age (> 7.0 ± 0.5) bill.  A
Other names
and catalog entries
Gliese catalog FY 1061 [1]
2MASS catalog 2MASS J03355969-4430453 [2]
Other names LHS 1565, LFT 295, LTT 1702, LP 995-46, L 372-58

Template: Infobox star / maintenance / magGTemplate: Infobox star / maintenance / magJ

GJ 1061 is a red dwarf approximately 12 light years from Earth in the southern constellation Pendulum Clock . Despite its relative proximity, it is very faint and with an apparent brightness of around 13 mag, at least a medium-sized telescope is required to be able to observe it.

meaning

The proper movement of GJ 1061 had been known for a long time, but it was thought to be further away. Its distance was only determined exactly in 1997 by the international astronomers association RECONS ( Research Consortium On Nearby Stars ). At this point it was the twenty-second closest known star to the Sun. The research group determined that many comparable stars could be discovered in the vicinity of the solar system.

distance

Determination of the distance for GJ 1061

source Parallax (mas) Distance (pc) Distance (Lj) Distance ( pm )
Gliese & Jahreiß (1991) 233.0 ± 57.0 4.3   +1.4−0.8 14   +4.5−2.8 132.4   +42.9−26
Henry et al. (1997) 3.79 ± 0.35 12.4 ± 1.1 106.6 ± 1.8
Henry et al. (1997) 273.4 ± 5.2 3.66 ± 0.07 11.93   +0.23−0.22 112.9   +2.2−2.1
Henry et al. (2006) 271.92 ± 1.34 3.678 ± 0.018 11.99 ± 0.06 113.5 ± 0.6
RECONS TOP100 (2012) 272.01 ± 1.30 3.676   +0.018−0.017 11.99 ± 0.06 113.4 ± 0.5
Lurie et al. (2014) 270.86 ± 1.29 3.692   +0.018−0.017 12.04 ± 0.06 113.9 ± 0.5
Gaia DR2 272.24 ± 0.07 3.673 ± 0.001 11.974 ± 0.003 113.28 ± 0.03

Planetary system

In 2019, based on data from HARPS, the discovery of a planetary system with 3 planets was announced. 2 of these planets are possibly in the habitable zone and are accordingly included in the list of potentially habitable planets .


GJ 1061 planets
Planet
(order
from the star) 		Discovered Mass
( earth masses ) 		Radius
( earth radii ) 		Major semiaxis of
the railway
( AU ) 		Rotation time
( days ) 		eccentricity Orbit inclination
( degree )
b 2019 1.4 ± 0.2 - 0.021 3.20 ± 0.01 <0.31 -
c 2019 1.8 ± 0.3 - 0.035 6.69 ± 0.01 <0.29 -
d 2019 1.7 ± 0.3 - 0.054 13.03 ± 0.03 <0.53 -

Web links

  • SolStation.com: FJ 1061. Retrieved March 29, 2015 . (English)

Individual evidence

  1. ↑ a b c d e f g h i j k L 372-58. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 8, 2019 .
  2. ↑ a b c d e f g h i S. Dreizler et al .: Red Dots: A temperate 1.5 Earth-mass planet in a compact multi-terrestrial planet system around GJ1061 . In: arXiv . September. arxiv : 1908.04717 .
  3. ↑ a b c d Henry, Todd J .; Ianna, Philip A .; Kirkpatrick, J. Davy; Jahreiß, Hartmut: The solar neighborhood IV: discovery of the twentieth nearest star . bibcode : 1997AJ .... 114..388H .
  4. ^ GJ 1061. In: VSX. AAVSO, accessed November 10, 2018 .
  5. ↑ Scholz, R.-D .; Irwin, M .; Ibata, R .; Jahreiß, H .; Malkov, O. Yu .: New high-proper motion survey in the Southern sky . bibcode : 2000A & A ... 353..958S .
  6. ↑ a b RECONS: THE ONE HUNDRED NEAREST STAR SYSTEMS. Retrieved March 29, 2015 .
  7. ↑ Gliese, W. and Jahreiß, H .: GJ 1061. Retrieved on March 29, 2015 .
  8. ^ Henry, TJ; Jao, Wei-Chun; Subasavage, John P .; Beaulieu, Thomas D .; Ianna, Philip A .; Costa, Edgardo; Méndez, René A .: The Solar Neighborhood XVII: Parallax Results from the CTIOPI 0.9m Program - Twenty New Members of the RECONS 10 Parsec Sample . arxiv : astro-ph / 0608230 .
  9. ↑ Lurie, John C .; Henry, Todd J .; Jao, Wei-Chun; Quinn, Samuel N .; Winters, Jennifer G .; Ianna, Philip A .; Koerner, David W .; Riedel, Adric R .; Subasavage, John P .: The Solar Neighborhood. XXXIV. A Search for Planets Orbiting Nearby M Dwarfs using Astrometry . arxiv : 1407.4820 .
  10. ↑ The star in VizieR. In: Gaia DR2 . Center de Données astronomiques de Strasbourg , accessed August 26, 2018 .