Star profile
HYG 118645
Binary systemWhat is HYG 118645
Antlia is a modern southern constellation, named by Lacaille in honour of the scientific instruments of the eighteenth century. There glows this double system — two yellow-white stars bound by gravity, dancing around one another for countless turns. Its light took about 384 years to reach us: it set out when Galileo first pointed his telescope at the sky and discovered the moons of Jupiter. The very idea of worlds orbiting other worlds was perhaps born then; here, even now, it goes on happening.
Where it is and when to see it
HYG 118645 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is February, when it culminates around midnight.
- From London it culminates about 11° above the horizon.
- From New York it culminates about 22° above the horizon.
- From Sydney it culminates about 84° above the horizon.
It can be seen from anywhere south of 62° N.
It ranks no. 12 in brightness among the 23 stars of Antlia in our catalogue. To find it, start from Alpha Antliae, the brightest: it lies about 10° away (a fist at arm's length covers about 10°).
The light you see today left it about 380 years ago.
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Astronomical data for HYG 118645
- Constellation
- Antlia
- Apparent magnitude
- 5.60
- Distance
- 384.2 light years
- Coordinates (J2000)
- RA 146.049° · Dec -27.769°
- Catalogue
- HYG 118645
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Antlia
Antlia has 23 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Antliae4.28
- Epsilon Antliae4.51
- Iota Antliae4.60
- HIP 518215.50
- HIP 504565.52
- Delta Antliae5.57
- HIP 529655.61
- HIP 471995.62