RIK-210

Last updated
RIK-210
Observation data
Epoch J2000       Equinox
Constellation Scorpius
Right ascension 16h 23m 24.544s [1]
Declination −17° 17′ 27.14″ [1]
Characteristics
Evolutionary stage pre-main sequence star
Spectral type M2.5
Apparent magnitude  (Kp)13.7
Apparent magnitude  (B)16.213 ± 0.066
Apparent magnitude  (V)14.630 ± 0.137
Apparent magnitude  (J)10.61 ± 0.02
Apparent magnitude  (H)9.85 ± 0.02
Apparent magnitude  (K)9.65 ± 0.02
B−V color index 1.583 ± 0.203
V−R color index 0.537 ± 0.255
R−I color index 1.231 ± 0.217
J−H color index 0.76 ± 0.04
J−K color index 0.96 ± 0.04
Variable type EW
Astrometry
Distance 145 ± 20  pc
Details [2]
Mass 0.53 ± 0.13  M☉
Radius 1.24 ± 0.125  R☉
Temperature 3500  K
Rotation 5.5 d [3]
Rotational velocity (v sin i)11 ± 1 km/s−1 km/s
Age 7.5 ± 2.5  Myr
Other designations
2MASS J16232454-1717270, EPIC 205483258
Database references
SIMBAD data
Exoplanet Archive data
Data sources:
arXiv:1612.03907 [astro-ph.SR],
SIMBAD,
NStED

RIK-210 is a star located north of Scorpius. It is known for its mysterious dimming events. [4] [2] The dips are observed with stable period of 5.667 days, but their triangular shape is inconsistent with the planetary eclipses. Instead, the diffuse cloud on synchronous orbit may be responsible. [3]

References

  1. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. 1 2 David, Trevor J.; Petigura, Erik A.; Hillenbrand, Lynne A.; Cody, Ann Marie; Cameron, Andrew Collier; Stauffer, John R.; Fulton, B. J.; Isaacson, Howard T.; Howard, Andrew W.; Howell, Steve B.; Everett, Mark E.; Wang, Ji; Benneke, Björn; Hellier, Coel; West, Richard G.; Pollacco, Don; Anderson, David R. (27 January 2017). "A Transient Transit Signature Associated with the Young Star RIK-210". The Astrophysical Journal. 835 (2): 168. arXiv: 1612.03907 . Bibcode:2017ApJ...835..168D. doi: 10.3847/1538-4357/835/2/168 . S2CID   2323788.
  3. 1 2 Stauffer, John; Cameron, Andrew Collier; Jardine, Moira; David, Trevor J.; Rebull, Luisa; Cody, Ann Marie; Hillenbrand, Lynne A.; Barrado, David; Wolk, Scott; Davenport, James; Pinsonneault, Marc (2017), "Orbiting Clouds of Material at the Keplerian Co-rotation Radius of Rapidly Rotating Low-mass WTTS in Upper Sco", The Astronomical Journal, 153 (4): 152, arXiv: 1702.01797 , Bibcode:2017AJ....153..152S, doi: 10.3847/1538-3881/aa5eb9 , S2CID   35276346
  4. ↑ Nowakowski, Tomasz (16 December 2016). "Astronomers observe mysterious dimming of a young nearby star". Phys.org. Retrieved 5 August 2017.


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