附目一百六十六:Gaia?BH?2(宙历97天体)
宙历九七,?盀?册。?曱馵?,鄨擳鶸?。虩????,?亽丱彑。
?擳,珱??敟。????,鶨?勹亠。??靋鵖,齌厛鹸疈。
注:挩?大昜系,歫嶳墬璆??3800灮秊
Gaia BH2、UCAC4 154-、2MASS J-、WISE J.74-.3
Centaurus
J2000.0 / ICRS
13h 50m 16.748s
?59° 14′ 20.33″
310.4031°
+2.7765°
AstroSpectroSB1
≈12.711
≈12.3
≈1.49 mag
≈1.95 mag
0.859 ± 0.018 mas
1160 ± 20 pc
?10.48 ± 0.10 mas/yr
?4.61 ± 0.06 mas/yr
?5.04 ± 2.08 km/s
≈1.45
1276.7 ± 0.6 d
0.5176 ± 0.0009
4.96 ± 0.08 AU
≈4.7 mas
34.87 ± 0.34°
266.9 ± 0.5°
.3 ± 1.4
130.9 ± 0.4°
25.23 ± 0.04 km/s
6.75 ± 0.51 M☉
≈8.85 ± 1.13 M☉
low-luminosity red giant
1.07 ± 0.19 M☉
7.77 ± 0.25 R☉
4604 ± 87 K
2.71 ± 0.24 cgs
24.6 ± 1.6 L☉
?0.22 ± 0.02 dex
+0.26 dex
<1.5 km/s
≈400 d
≈5.1?1·2??.? Gyr
8.94 ± 0.34 M☉
≈2GM/c2 ≈ 26.4 km
≈2×10?? M☉/yr
≈0.002–0.003 × Bondi-Hoyle≈ 2×10?? M_Edd
≈2.4 AU,≈7.5 AU
L_X < 4×102? erg/s
L_R < 1×102? erg/s