RIK-210

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
Distance145 ± 20 pc
Details[2]
Mass0.53 ± 0.13 M☉
Radius1.24 ± 0.125 R☉
Temperature3500 K
Rotation5.5 d[3]
Rotational velocity (v sin i)11 ± 1 km/s−1 km/s
Age7.5 ± 2.5 Myr
Other designations
2MASS J16232454-1717270, EPIC 205483258
Database references
SIMBADdata
Exoplanet Archivedata
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. ^ a b 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. ^ a b 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. ^ a b 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.


Stub icon

This star-related article is a stub. You can help Wikipedia by expanding it.