HD 137509
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Apus |
| Right ascension | 15h 31m 27.11664s [1] |
| Declination | −71° 03′ 43.6541″ [1] |
| Apparent magnitude (V) | 6.87 [2] |
| Characteristics | |
| Spectral type | B9p (SiCrFe) [3] |
| B−V color index | -0.11 [4] |
| Astrometry | |
| Radial velocity (Rv) | +0.50[5] km/s |
| Proper motion (μ) | RA: -16.08[6] mas/yr Dec.: -14.64[6] mas/yr |
| Parallax (π) | 5.11 ± 0.38[1] mas |
| Distance | 640 ± 50 ly (200 ± 10 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 137509, also known as NN Apodis, is a class B9p[3] star in the constellation Apus. Its apparent magnitude is 6.87[2] and it is approximately 640 light years away based on parallax.[1] It shines with a luminosity approximately 111 times that of the Sun and has a surface temperature of 12804 K.[7] It has one of the strongest magnetic fields recorded for a chemically peculiar star.[3]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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