2011BAVSR..60....9M

Query : 2011BAVSR..60....9M

2011BAVSR..60....9M - BAV Rundbrief, 60, 9 (2011/March-0)

IT Her - ein W-UMa-Stern mit periodenaenderung.

MAINTZ G.

Abstract (from CDS):

CCD observations of IT Her (GSC 2112 1845) were obtained at my private observatory over a period of 7 nights during 2010. 704 images were collected. They confirm, that IT Her is an eclipsing binary of type EW with an amplitude of 0.45 mag as already shown by Schmidt et al.,(1996), Diethelm (1999) and Kreiner (2004). Its period is not stable but extended, with the best elements: JD 24452500.0940 + 0.3393964 d*E. The secondary minimum is at phase 0.5. Both minima show a contstant brightness of 0.025 ±0.003 d.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* IT Her EB* 18 45 46.4130350304 +25 19 59.393191044   12.781 12.15 12.214 11.29 ~ 25 1

Query : 2011BAVSR..60....9M

Basic data :
V* IT Her -- Eclipsing Binary
Other object types: otypes_help 		* (GSC,NSVS,...), V* (AN,ASAS,...), EB* (2009AJ), RR* (2017ARep), EB? (2018AJ), NIR (2MASS), Opt (ATO)
ICRS coord. (ep=J2000) : 		18 45 46.4130350304 +25 19 59.393191044 (Optical) [ 0.0060 0.0084 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		18 43 43.6825275080 +25 16 45.541142983 [ 0.0060 0.0084 90 ]
Gal coord. (ep=J2000) : 		055.2345031456313 +12.4147054522062 [ 0.0060 0.0084 90 ]
Proper motions mas/yr : 		-16.462 -12.395 [0.008 0.010 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -16.66 [27.44] / z(spectroscopic) -0.000056 [0.000092] / cz -16.66 [27.44]
   (Opt) E 2022yCat.1355....0G
Parallaxes (mas): 		2.722 [0.0098] A 2020yCat.1350....0G
Fluxes (9) :
B 12.781 [~] D 2012AJ....143...99T
V 12.15 [~] D 2012AJ....143...99T
R 12.214 [0.03] D 2012yCat.1322....0Z
G 12.308898 [0.006864] C 2022yCat.1355....0G
I 11.29 [~] D 2012AJ....143...99T
J 10.843 [0.024] C 2003yCat.2246....0C
H 10.519 [0.032] C 2003yCat.2246....0C
K 10.413 [0.018] C 2003yCat.2246....0C
g 12.758 [~] D 2020ApJS..249...18C
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notes:

Identifiers (14) :
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GSC 02112-01845 2MASS J18454641+2519594 UCAC2 40720060 Gaia DR2 4537436243026021120
AN 34.1930 NSVS 8185343 UCAC4 577-068035 Gaia DR3 4537436243026021120
ASAS J184546+2520.0 ROTSE1 J184547.01+251959.8 V* IT Her
ATO J281.4433+25.3331 TIC 336561759 ZTF J184546.39+251959.3

References (25 between 1850 and 2026) (Total 25)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 2    Distance : 2    Var : 6    Plx : 2    PM : 2   

   

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Link by name to the catalogue in VizieR :

GSC 02112-01845 2MASS J18454641+2519594 UCAC2 40720060 UCAC4 577-068035 V* IT Her
Gaia DR2 4537436243026021120 Gaia DR3 4537436243026021120

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