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WR 124
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WR 124 sī thian-tsìnn tsō tang-tiong ê tsi̍t-lia̍p Wolf–Rayet hîng-tshenn (star). Sì-khoo-uî-á khuân-jiáu tio̍h tsi̍t-ê iû hông kiò-tsò M1-67 ê pâi-tshut bu̍t-tsit sóo tsoo-sîng ê khuân-hîng sing-hûn.[9] WR 124 sī Gîn-hô hē tang-tiong liû-suan sok-tōo siōng kín ê hîng-tshenn tsi-it, kìng-hiòng sok-tōo uî 200 km/s. WR 124 iû Paul W. Merrill tī 1938-nî huat-hiān, hông kàm-tīng tsò tsi̍t-lia̍p ko-sok ê Wolf–Rayet hîng-tshenn.[10] WR 124 teh piàn-tshenn (變星) tsóng-pió tang-tiong hông lia̍t tsò QR Sagittae, huān-uî sī0.08 sing-tíng.[5]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Sagitta |
Right ascension | 19h 11m 30.875s[1] |
Declination | +16° 51′ 38.20″[1] |
Apparent magnitude (V) | 7001115000000000000♠11.50±0.11[2] |
Characteristics | |
Spectral type | WN8h[3] |
Apparent magnitude (B) | 7001121900000000000♠12.19±0.16[2] |
Apparent magnitude (J) | 7000857800000000000♠8.578±0.024[4] |
Apparent magnitude (H) | 7000817900000000000♠8.179±0.018[4] |
Apparent magnitude (K) | 7000773200000000000♠7.732±0.018[4] |
B−V | 0.69[2] |
Variable type | Eruptive (WR)[5] |
Astrometry | |
Radial velocity (Rv) | 7002190000000000000♠190±7.4[6] km/s |
Proper motion (μ) | RA: 2999748300000000000♠−2.517±0.012[1] mas/yr Dec.: 2999432900000000000♠−5.671±0.012[1] mas/yr |
Parallax (π) | 0.1568 ± 0.0140 mas[1] |
Distance | Pang-bô͘:ErrorBar2 ly (Pang-bô͘:ErrorBar2 pc) |
Absolute magnitude (MV) | −6.58[7] |
Details | |
Mass | 20[7] M☉ |
Radius | 11.93[7] Pang-bô͘:Solar radius |
Luminosity | 562,000[7] Pang-bô͘:Solar luminosity |
Temperature | 44,700[7] K |
Age | 8.6[8] Myr |
Other designations | |
Merrill's Star, QR Sagittae, HIP 94289, GSC 01586-00411, Sh 2-80, Hen 2-427 | |
Database references | |
SIMBAD | data |
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