Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 12h 59m 04.71s |
Declination | −43° 36′ 24.4″ |
Apparent magnitude (V) | 18.01 |
Characteristics | |
Evolutionary stage | main-sequence star |
Spectral type | M7.5[1] |
Apparent magnitude (R) | 15.74 |
Apparent magnitude (J) | 10.53 |
Astrometry | |
Proper motion (μ) | RA: 1102.919 mas/yr[2] Dec.: -264.536 mas/yr[2] |
Parallax (π) | 129.4288 ± 0.0620 mas[2] |
Distance | 25.20 ± 0.01 ly (7.726 ± 0.004 pc) |
Other designations | |
Database references | |
SIMBAD | data |
SIPS 1259-4336 is a red dwarf star first documented in 2005, in the constellation Centaurus. It is located around 25 light-years from Earth.
Discovery of SIPS 1259-4336 was published in 2005 by Deacon et al. The star was detected by its high proper motion from the Southern Infrared Proper Motion Survey (SIPS).[3]
The star was originally incorrectly thought to be 11.8 light-years from Earth. However, two later sets of observations found it to be at just over 25 light-years, and one of these - the Gaia spacecraft observation - has a much smaller margin of error.
Later distance estimates of the star, besides trigonometric parallax with high uncertainty from the star's discovery paper,(276±41 mas[3]) include a parallax of "~128 mas" without specific error range from Burgasser et al. (2015). Its cross-references, including for parallax, were the 2005 discovery paper and T. Henry, priv. comm.[4] In independent agreement with the latter, Gaia's Data Release 2 gives a parallax of 129.0505±0.1398 mas.[5]
The brightness of the star shows a dimming trend, with period in excess of ten years.[1]