Name in the directory:40_Eri
Right Ascension:4h 15m 15.65s
Declination:-7° 39′ 18.79″
Total Exposure:3 минуты
Number of Frames:120
Link to FITS files:Download
- L4 minutes (120 frames)
40 Eridani is a triple star system located in the constellation Eridanus, approximately 16 light-years from Earth. The system consists of three components: a K-class star, a G-class star, and an M-class red dwarf.
1. 40 Eridani A
- Class: G.
- Mass: approximately twice the mass of the Sun.
- Luminosity: 60 times that of the Sun.
- Age: approximately 4 billion years old.
- Features: is the primary star of the system and is in the process of burning hydrogen into helium. Due to its characteristics, it is often mentioned in science fiction, including the Star Trek universe.
2. Proxima Eridani
- Class: K.
- Mass: about 0.3 solar masses.
- Luminosity: 0.17 times less than the solar mass.
- Position: orbits a common center of mass with 40 Eridani A, the orbital period is 20.5 years.
- Distance to 40 Eridani A: about 0.23 light years (approximately 14,550 AU).
3. 40 Eridani B
- Class: M (red dwarf).
- Mass: about 0.2 solar masses.
- Luminosity: only 0.0005 solar masses.
- Position: Located at a distance of about 7000 AU from the system of 40 Eridani A and Proxima Eridani.
Features of the system
- Dynamics: Proxima Eridani and 40 Eridani A form a close binary system, while 40 Eridani B is at a significant distance, complementing the system as a third component.
- Evolution: The combination of stars of different classes allows us to study the processes of stellar evolution and interactions in multicomponent systems.
Scientific and cultural significance
40 Eridani is of great interest to astronomers due to its proximity to Earth and its triple structure. The system is mentioned in science fiction: for example, it was chosen as the home system of the character Spock from Star Trek. This makes it not only an object of astronomical research, but also a cultural phenomenon.
Visibility chart of Star 40 Eridani during the day
The height diagram of Star 40 Eridani above the horizon during the current day for the observatory observation point in Orenburg (51.7, 55.2). The chart shows when the object is above the horizon and at what maximum height in degrees it rises. The data is relevant for the observation date: Saturday, 26 April 2025.
| Date | Moon Phase | Exposure | CCD Temperature | Gain | Offset | Filter |
|---|---|---|---|---|---|---|
- 2023ixf•
- 40 Eri•
- Abell 74•
- Artemis A868 SA•
- a Canis Minoris•
- C 2020 R4 ATLAS•
- C 2020 T2 Palomar•
- C 2021 S3 (PANSTARRS)•
- Haumea (2003 EL61)•
- HCG 68•
- HCG 92•
- IC 1318B•
- IC 1396•
- IC 1795•
- IC 1805•
- IC 1848•
- IC 1871•
- IC 3322A•
- IC 342•
- IC 4015•
- IC 405•
- IC 417•
- IC 434•
- IC 443•
- IC 4703•
- IC 5070•
- IC 5146•
- IC 63•
- M 1•
- M 101•
- M 103•
- M 109•
- M 13•
- M 15•
- M 27•
- M 3•
- M 33•
- M 42•
- M 45•
- M 5•
- M 51•
- M 57•
- M 63•
- M 64•
- M 74•
- M 76•
- M 81•
- M 82•
- M 86•
- M 87•
- M 94•
- M 97•
- NGC 147•
- NGC 1491•
- NGC 1499•
- NGC 1579•
- NGC 1961•
- NGC 2146•
- NGC 2239•
- NGC 2403•
- NGC 281•
- NGC 4236•
- NGC 4565•
- NGC 4631•
- NGC 507•
- NGC 508•
- NGC 5866•
- NGC 5907•
- NGC 6503•
- NGC 6823•
- NGC 6888•
- NGC 6946•
- NGC 6992•
- NGC 6995•
- NGC 7000•
- NGC 7023•
- NGC 7129•
- NGC 7217•
- NGC 7331•
- NGC 7380•
- NGC 7538•
- NGC 7635•
- NGC 7640•
- NGC 7822•
- NGC 891•
- NGC 896•
- NGC 925•
- PGC 54559•
- Sh2-155•
- Sh2-168•
- Sh2 103•
- Sh2 109•
- Sh2 132•
- T CrB•
- UGC 6930•
- V1405 Cas•
- Vesta A807 FA•