Omicron2 Eridani
triple star system in the constellation Eridanus
Press Enter · cited answer in seconds
0 sources
Summary
Omicron2 Eridani is a triple star system[1]. It ranks in the top 5% of triple star system entities by monthly Wikipedia readership (5,895 views/month).[2]
Key Facts
- Instance of: binary star[3], star[4], multiple star[5]
- Constellation: Eridanus[6]
- Commons category: 40 Eridani[7]
- Has part(s): 40 Eridani A[8], 40 Eridani B[9], 40 Eridani C[10]
- Catalog code: CCDM J04153-0739ABC[11], ADS 3093 ABC[12], IDS 04108-0749 ABC[13], WDS J04153-0739A,BC[14], PMSC 04107-0748[15], 40 Eri[16], ο² Eri[17], GJ 166[18]
- Absolute magnitude: 5.93[19]
- Luminosity: 0.46 solar luminosity[20]
- Mass: 0.84 solar mass[21]
- Radius: 0.81 solar radius[22]
- Parallax: 198.5657 milliarcsecond[23]
- Radial velocity: 42.278 kilometre per second[24]
- Distance from Earth: 5.0361 parsec[25]
- Right ascension: 63.82333 degree[26]
- Declination: -7.64472 degree[27]
- Epoch: J2000.0[28]
- Declination component of proper motion: -3421.429 milliarcsecond per year[29]
- Right ascension component of proper motion: -2240.519 milliarcsecond per year[30]
Why It Matters
Omicron2 Eridani has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[31] It is known by 52 alternative names across languages and contexts.[32]