RIK-210
Star located in Ophiuchus
From Wikipedia, the free encyclopedia
RIK-210 is a star located in the constellation Ophiuchus. It is known for its mysterious dimming events.[5][3] 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.[4]
Right ascension16h 23m 24.544s[2]
Declination−17° 17′ 27.14″[2]
Evolutionarystagepre-main sequence star
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Ophiuchus[1] |
| Right ascension | 16h 23m 24.544s[2] |
| Declination | −17° 17′ 27.14″[2] |
| 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[3] | |
| Mass | 0.53 ± 0.13 M☉ |
| Radius | 1.24 ± 0.125 R☉ |
| Temperature | 3500 K |
| Rotation | 5.5 d[4] |
| 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 | |
