GJ 3323

Coordinates: Sky map 05h 01m 57.42611s, −06° 56′ 46.3718″
Source: Wikipedia, the free encyclopedia.
GJ 3323
GJ 3323 is located in the constellation Eridanus
GJ 3323 is located in the constellation Eridanus

GJ 3323
Location of GJ 3323 in the constellation Eridanus

Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 05h 01m 57.42613s[1]
Declination −06° 56′ 46.3763″[1]
Apparent magnitude (V) 12.20[2]
Characteristics
Spectral type M4.0Ve[3]
B−V color index +1.72[2]
Distance
17.531 ± 0.003 ly
(5.3750 ± 0.0008 pc)
Absolute magnitude (MV)13.57[3]
Details
Rotational velocity (v sin i)
1.0±0.8[3] km/s
NLTT 14393, 2MASS J05015746-0656459[6]
Database references
SIMBADdata

GJ 3323 (also known as LHS 1723) is a nearby single

apparent visual magnitude 12.20.[2] Parallax measurements give a distance estimate of 17.5 light-years (5.4 parsecs) from the Sun.[1] It is drifting further away with a radial velocity of +42.3 km/s.[2] Roughly 104,000 years ago, the star is believed to have come to within 7.34 ± 0.16 light-years of the Solar System.[9]

The

Sun's luminosity.[4]

History of observations

The discovery name of this star is

LP 656-38,[10] which indicates that its discovery was published between 1963 and 1981 in University of Minnesota, Minneapolis.[11] "LP" means "Luyten, Palomar
".

GJ 3323 is known at least from 1979, when catalogues of high proper motion objects

NLTT were published by Willem Jacob Luyten, and this object was included to these catalogues.[12][13]

Distance measurement

In 1982,

mas.[15]

Its trigonometric parallax remained unknown until 2006, when it was published by the RECONS team. The parallax was 187.92±1.26 mas.[16]

Planetary system

On March 15, 2017, two planets orbiting GJ 3323 were detected by the

circumstellar habitable zone of its star.[17]

The GJ 3323 planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥2.02+0.26
−0.25 M🜨 		0.03282+0.00054
−0.00056 		5.3636±0.0007 0.23±0.11 — —
c ≥2.31+0.50
−0.49 M🜨 		0.1264+0.0021
−0.0022 		40.54+0.21
−0.19 		0.17+0.21
−0.12 		— —

References

  1. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  2. ^
    S2CID 52952408
    .
  3. ^
    S2CID 9719725
    .
  4. ^
    S2CID 102351979
    . A68.
  5. ^
    doi:10.1093/mnras/sty1670
    .
  6. ^ "LP 656-38". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-27.
  7. ^
    S2CID 119418595
    .
  8. ISBN 0-933346-84-0
    .
  9. S2CID 118512652
    .
  10. S2CID 119279752
    .
  11. Centre de Données astronomiques de Strasbourg
    .
  12. ^ Luyten, Willem Jacob (1979). "LHS 1723". LHS Catalogue, 2nd Edition.
  13. ^ Luyten, Willem Jacob (1979). "NLTT 14393". NLTT Catalogue.
  14. Bibcode:1982A&AS...47..471G
    .
  15. ^ Gliese, W.; Jahreiß, H. (1991). "NN 3323". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-11-23.
  16. S2CID 15002841
    .
  17. ^ "Open Exoplanet Catalogue - GJ 3323 b". www.openexoplanetcatalogue.com. Retrieved 2024-03-09.
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