2022RNAAS...6..173S

Query : 2022RNAAS...6..173S

2022RNAAS...6..173S - Research Notes of the AAS, 6, 173 (2022/August-0)

Minima Epoches of BF Draconis Observed by the TESS Satellite.

SCHMUTZ W.

Abstract (from CDS):

The epochs of 80 minima from 2019 to 2022 of the eclipsing binary BF Dra have been measured from photometric fluxes obtained by the TESS satellite with uncertainties of 3 s and 6 s for primary and secondary minima, respectively. There is a clear negative linear trend of the interval length between primary and secondary minima, which confirms previous analyses that the system's orbit has an apsidal motion. It is found that the periastron advances 1.43 ± 0.03 deg/century, i.e., the apsidal period is U = 25,200 ± 500 yr. These values agree with previous estimates within the combined uncertainties but the present uncertainties are lower by a factor of eight. It is also confirmed that the residuals of the TESS-minima have a significant trend relative to a mean long-term apsidal motion signature due to a systematic influence of unknown origin.

Journal keyword(s): Stellar astronomy

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* BF Dra	SB*	18 50 59.3542767936	+69 52 57.490047660		10.33	9.76			F8	69	0

Query : 2022RNAAS...6..173S

Basic data :

V* BF Dra -- Spectroscopic Binary

* (2022AJ,BD,...), SB* (2022yCat,SBC9), EB* (2012A&A), V* (V*), NIR (2MASS)

18 50 59.3542767936 +69 52 57.490047660 (Optical) [ 0.0108 0.0104 90 ] A 2020yCat.1350....0G

18 51 23.0279775266 +69 49 14.157713721 [ 0.0108 0.0104 90 ]

100.5539942015085 +25.3891165459046 [ 0.0108 0.0104 90 ]

9.036 27.132 [0.014 0.013 90] A 2020yCat.1350....0G

V(km/s) -30.00 [3.3] / z(~) -0.000100 [0.000011] / cz -30.00 [3.30] C 2006AstL...32..759G

2.8820 [0.0106] A 2020yCat.1350....0G

F8 D ~

B 10.33 [0.03] D 2000A&A...355L..27H

V 9.76 [0.03] D 2000A&A...355L..27H

G 9.706838 [0.002764] C 2022yCat.1355....0G

J 8.837 [0.035] C 2003yCat.2246....0C

H 8.634 [0.020] C 2003yCat.2246....0C

K 8.596 [0.019] C 2003yCat.2246....0C

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`BD+69 1006`	`HIC 92489`	`SBC9 1104`	`WEB 15988`
`AG+69 783`	`HIP 92489`	`TIC 229776076`	`Gaia DR3 2265323776643747456`
`AP J18505934+6952575`	`2MASS J18505934+6952575`	`TYC 4435-1750-1`	`Gaia DR1 2265323772347446400`
`GSC 04435-01750`	`PPM 21133`	*`V BF Dra`**	`Gaia DR2 2265323776643747456`

References (69 between 1850 and 2026) (Total 69)
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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`BD+69 1006`	`AG+69 783`	`AP J18505934+6952575`	`GSC 04435-01750`	`HIC 92489`
`HIP 92489`	`2MASS J18505934+6952575`	`PPM 21133`	`TYC 4435-1750-1`	*`V BF Dra`**
`Gaia DR3 2265323776643747456`	`Gaia DR1 2265323772347446400`	`Gaia DR2 2265323776643747456`

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