NEXXUS 2 - The database for Nearby X-ray and extreme UV emitting Stars

Star Page     -     NS 1855+2333 A   HIP 92919   HD 175742   BD+23 3500   V775 Her



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ROSAT Survey Field Image Browser     SIMBAD entry


Star Information:

RA (2000.0)DE (2000.0)μ [ "/yr ]θ [ ° ]Radial VelocitySpectral TypeBVDistance [ pc ]
18 55 53.21 +23 33 23.760.312155.2-6K098.0921.49


ROSAT All-Sky Survey (RASS):

Detection NumberCount RateBackgroundExposure TimeLikelihoodHR1HR2log Lx
1RXS J185557.3+2334101.878 ± 0.052360.000736483990-0.11 ± 0.02-0.02 ± 0.0429.79


ROSAT Position Sensitive Proportional Counter (PSPC):

Detection NumberSequence IdCount Rate BackgroundLikeliOAXExposure TimeObservation TimeHR1HR2Imageslog Lx
2RXP J185553.3+233327200917 n00.0032.267 ± 0.03340.00099999320781993-04-08 to 1993-04-08-0.1 ± 0.01-0.02 ± 0.02rgb rgbd29.88


ROSAT Wide Field Camera (WFC) All-Sky Survey:

Detection NumberRA (2000.0)DE (2000.0) S1 Count Rate S2 Count RateSignificance S1Significance S2Significance
2RE J1855+23318 55 53.72+23 33 34.60.04 ± 00.06 ± 0.0115.212.219.5


EUVE All-Sky Survey:

Detection NumberRA (2000.0)DE (2000.0)58-174 Å Count Rate156-234 Å Count Rate368-590 Å Count Rate519-742 Å Count Rate
EUVE J1855+23518 55 52+23 33.80.064 ± 0.0110.032 ± 0.013

Joint EUVE-ROSAT Detections:

Detection NumberRA (2000.0)DE (2000.0)58-174 Å Count Rate
EUVE J1855+23518 55 57+23 34 170.05



Last modified on Tuesday, 28 October 2008.   C. Liefke | Impressum