FLASH REPORTS -- NOVA ID=1244624474

NOVA ID=1244624474

XTE J1858+034

Alert Mail

[Ground Trigger ID]
ID          :  1244624474

[Count Weighted Position]
RA,Dec: (284.839,   3.856)
Galac.: ( 37.271,  -0.008)
Eclip.: (286.582,  26.445)

[Triggered Criteria]
S  :  4orb
M  :  4orb, 1d

[Highest Significance]
DPTC  : 1468868621
UT    : 2026/07/23 19:03:53
on    : 4orb (Med-band)
sigma : 1.4

[Observed flux]
S :     20 +-    14 mCrab ( 3-10keV)
L :      0 +-    13 mCrab ( 2- 4keV)
M :     38 +-    27 mCrab ( 4-10keV)
H :    -58 +-    84 mCrab (10-20keV)

nearby(r<5deg) object
=====================
dist  flux  (RA, Dec)        name
[deg][mCrab]  [deg]
=====================
0.45      0.5 (284.69,   3.43)  XTE J1858+034
1.25      7.0 (285.90,   3.19)  4U 1901+03
1.60     11.3 (284.18,   5.31)  XTE J1856+053
2.47      4.1 (285.42,   1.45)  XTE J1901+014
3.31     12.9 (287.96,   4.98)  SS 433,V1343 Aql
3.84  unknown (283.48,   7.45)  IGR J18539+0727
4.18  unknown (282.23,   0.58)  V603 Aql
4.38      7.6 (284.76,   8.23)  XTE J1859+083
4.42     -5.0 (287.82,   0.58)  Aql X-1,V1333 Aql
4.53     -0.4 (281.41,   0.89)  GS 1843+00,b 336
4.65  unknown (283.86,   8.40)  MCC 188
4.70     10.3 (287.70,   7.60)  4U 1909+07,4U 1908+075
4.98    229.3 (279.99,   5.04)  Ser X-1,MM Ser

[Sun/Moon (RA, Dec)]
Sun :  (122.785, 20.032)
Sun dist: 150.3
Moon:  (232.976, -24.445)
age: 9.16 day

[Latitude/Longitude]
(16.91N, 57.51E)

Images

Lightcurve

Image

ALL	LOW (2 - 4 keV)	MED (4 - 10 keV)	HIGH (10 - 20 keV)

Spectrum

Past Variability

No	maxitime (ut)		Image	lc
No	Start	End	Image	lc
1	838064757.568 (2026-07-22T19:45:52)	838065199.242 (2026-07-22T19:53:14)		link to lc
2	838070331.845 (2026-07-22T21:18:46)	838070776.906 (2026-07-22T21:26:11)		link to lc
3	838075910.868 (2026-07-22T22:51:45)	838076354.576 (2026-07-22T22:59:09)		link to lc
4	838081488.142 (2026-07-23T00:24:43)	838081932.822 (2026-07-23T00:32:07)		link to lc
5	838087058.805 (2026-07-23T01:57:33)	838087509.350 (2026-07-23T02:05:04)		link to lc
6	838092734.503 (2026-07-23T03:32:09)	838093084.217 (2026-07-23T03:37:59)		link to lc
7	838096930.825 (2026-07-23T04:42:05)	838096991.715 (2026-07-23T04:43:06)		link to lc
8	838098324.933 (2026-07-23T05:05:19)	838098662.297 (2026-07-23T05:10:57)		link to lc
9	838102504.835 (2026-07-23T06:14:59)	838102560.147 (2026-07-23T06:15:55)		link to lc
10	838103838.386 (2026-07-23T06:37:13)	838104237.366 (2026-07-23T06:43:52)		link to lc
11	838108083.511 (2026-07-23T07:47:58)	838108140.528 (2026-07-23T07:48:55)		link to lc
12	838109382.041 (2026-07-23T08:09:37)	838109809.136 (2026-07-23T08:16:44)		link to lc
13	838114958.903 (2026-07-23T09:42:33)	838115392.353 (2026-07-23T09:49:47)		link to lc
14	838120531.540 (2026-07-23T11:15:26)	838120962.981 (2026-07-23T11:22:37)		link to lc
15	838126105.900 (2026-07-23T12:48:20)	838126542.986 (2026-07-23T12:55:37)		link to lc
16	838131688.835 (2026-07-23T14:21:23)	838132114.744 (2026-07-23T14:28:29)		link to lc
17	838137262.007 (2026-07-23T15:54:17)	838137698.496 (2026-07-23T16:01:33)		link to lc
18	838142839.771 (2026-07-23T17:27:14)	838143278.127 (2026-07-23T17:34:33)		link to lc
19	838148418.203 (2026-07-23T19:00:13)	838148693.513 (2026-07-23T19:04:48)		link to lc

Localization Error Box