[X-ray-star:977] GX 339-4

[maxiweb at maxi.riken.jp]

GX 339-4 is brightening (H. Negoro, C. Kang).

=====================
MAXI transient alert
2025-08-26 22:49:01 UT
=====================

[Ground Trigger ID]
ID          :  0913776481

[Count Weighted Position]
RA,Dec: (255.501, -48.728)
Galac.: (338.911,  -4.191)
Eclip.: (259.428, -25.819)

[Triggered Criteria]
M  :  4d

[Highest Significance]
DPTC  : 1440283663
UT    : 2025/08/26 22:49:01
on    : 4d (Med-band)
sigma : 2.4

[Observed flux]
S :     29 +-    10 mCrab
L :     13 +-    10 mCrab
M :     40 +-    17 mCrab
H :     27 +-    68 mCrab

nearby(r<5deg) object
=====================
dist  flux  (RA, Dec)        name
[deg][mCrab]  [deg]
=====================
0.15     12.5 (255.71, -48.79)  GX 339-4,V821 Ara
2.31     -7.3 (252.50, -49.96)  XTE J1650-500,GHJ2008 3
2.55    -45.4 (255.24, -46.19)  XTE J1701-462
3.76  unknown (253.09, -45.34)  XTE J1652-453
3.81  unknown (251.79, -45.87)  CXOU J164710.2-455216
4.16    479.4 (251.45, -45.61)  GX 340+0,1RXS J164547.8-453642
4.22  unknown (249.26, -49.86)  XTE J1637-498
4.22  unknown (256.12, -44.53)  XTE J1704-445
4.26  unknown (251.99, -45.20)  IGR J16479-4514
4.35  unknown (249.78, -46.71)  IGR J16393-4643,AX J1639.0-4642
4.47  unknown (249.31, -50.72)  IGR J16374-5043
4.47  unknown (251.65, -45.12)  IGR J16465-4507
4.50  unknown (248.97, -47.59)  SGR 1627-41,SGR1627-41
4.55  unknown (248.98, -47.43)  IGR J16358-4726,IGR16358-4726
4.68  unknown (250.46, -45.54)  IGR J16418-4532
4.78     83.5 (257.23, -44.10)  4U 1705-440,SAXWFC J1708.9-4406.9
4.86     32.6 (248.50, -47.39)  4U 1630-472,Nor X-1,GX 337+00
4.96  unknown (247.97, -48.81)  IGR J16318-4848

[Sun/Moon (RA, Dec)]
Sun :  (155.504, 10.193)
Moon:  (194.029, -8.717)
age: 3.15 day

[Latitude/Longitude]
(13.76S, 170.15W)


We will report more detailed information on this event to ATel and/or GCN.

---

For more information:
 http://maxi.riken.jp/alert/novae/0913776481/0913776481.htm

About MAXI data:
 http://maxi.riken.jp/