[X-ray-star:625] V4641 Sgr, SAX J1819.3-2525

[maxiweb at maxi.riken.jp]

A weak outburst from V4641 Sgr was detected (H. Negoro).

=====================
MAXI transient alert
2018-08-08 09:57:26 UT
=====================

[Ground Trigger ID]
ID          :  8338849999

[Count Weighted Position]
RA,Dec: (274.840, -25.407)
Galac.: (  6.780,  -4.799)
Eclip.: (274.374,  -2.041)

[Triggered Criteria]

[Highest Significance]
DPTC  : 1217757431
UT    : 2018/08/08 09:57:26
on    : 1d (S-band)
sigma : 0.7

[Observed flux]
S :      9 +-    13 mCrab
L :     15 +-    16 mCrab
M :     14 +-    24 mCrab
H :    120 +-    87 mCrab

nearby(r<5deg) object
=====================
dist  flux  (RA, Dec)        name
[deg][mCrab]  [deg]
=====================
0.00     13.4 (274.84, -25.41)  V4641 Sgr,SAX J1819.3-2525
0.52  unknown (274.34, -25.14)  IGR J18173-2509
0.90      3.9 (274.60, -24.54)  XTE J1818-245
1.29     41.5 (276.12, -24.85)  AX J1824.5-2451
1.29     41.5 (276.14, -24.87)  M 28,IGR J18245-2452
2.08     29.7 (272.69, -26.15)  SAX J1810.8-2609,V4722 Sgr
2.21      0.4 (277.24, -25.03)  MAXI J1828-249
2.39  unknown (273.22, -23.53)  PSR J1809-2332,0FGL J1809.5-2331
2.81    203.6 (277.37, -23.80)  GS 1826-238,V4634 Sgr
2.95      7.8 (271.71, -24.58)  2S 1803-245,SAXWFC J1806.9-2434.7
3.09  unknown (272.59, -23.09)  V5588 Sgr
3.70  unknown (271.96, -22.80)  MAXI J1807-228
4.11     21.2 (270.30, -25.74)  GRS 1758-258,1RXS J180112.6-254435
4.13   1116.8 (270.28, -25.08)  GX 5-1,1RXS J180108.7-250444
4.31  unknown (271.62, -22.25)  SAX J1806.5-2215
4.47  unknown (271.86, -29.01)  V5585 Sgr
4.85     -4.9 (271.75, -29.41)  XTE J1807-294
4.86  unknown (270.25, -22.95)  SGR 1801-23,SGR1801-23

[Sun/Moon (RA, Dec)]
Sun :  (138.031, 16.173)
Moon:  (93.578, 20.563)
age: 26.31 day

[Latitude/Longitude]
(17.01S, 1.80W)


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

---

For more information:
 http://maxi.riken.jp/alert/novae/8338849999/8338849999.htm

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