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Location of δ¹ Apodis (center) |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Apus |
| Right ascension | 16h 20m 20.8056s |
| Declination | -78° 41′ 44.682″ |
| Apparent magnitude (V) | 4.76 |
| Characteristics | |
| Spectral type | M5IIIb |
| U−B color index | 1.69 |
| B−V color index | 1.69 |
| Variable type | irregular variable |
| Astrometry | |
| Radial velocity (Rv) | -12 km/s |
| Proper motion (μ) | RA: -9.91 mas/yr Dec.: -36.59 mas/yr |
| Parallax (π) | 4.26 ± 0.57 mas |
| Distance | approx. 800 ly (approx. 230 pc) |
| Absolute magnitude (MV) | -2.3 |
| Details | |
| Mass | 5 M☉ |
| Radius | 125 R☉ |
| Luminosity | 2500 L☉ |
| Temperature | 3100 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
Delta Apodis (δ Aps, δ Apodis) is a double star in the constellation Apus.
The brighter of the pair, δ¹ Apodis, is a M-type red giant with a mean apparent magnitude of +4.68. It is classified as an irregular variable star and its brightness varies from magnitude +4.66 to +4.87. At a separation of 102.9 arcseconds is δ² Apodis, an orange K-type giant with an apparent magnitude of +5.27.
Hipparcos data report the distance to δ¹ Apodis to be approximately 770 light years, while δ² Apodis is found to be approximately 663 light years from Earth. The error in these measurements are such that it is not certain if these two stars form a gravitationally bound system. They have a common proper motion, which lends support to the idea that they are gravitationally interacting.
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