* Astronomy

Title: The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis Authors: D. R. Lorimer, A. J. Faulkner, A. G. Lyne, R. N. Manchester, M. Kramer, M. A. McLaughlin, G. Hobbs, A. Possenti, I. H. Stairs, F. Camilo, M. Burgay, N. D'A...

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Mira variables pulsate with a period between 80 and 1000 days. In visual light, the amplitude of the light change is in general between 2.5 and 10 magnitudes. In infrared the amplitude is significantly smaller. Miras are of spectral type M, S or C, dependent on the ratio between the amount of carb...

Title: Recent UBVJH Photometry of Epsilon Aurigae Authors: Jeffrey L. Hopkins, Robert E. Stencel Since first observed in the early 1980s, the Hopkins Phoenix Observatory continues its UBV band observations of the long period (27.1 years) eclipsing binary star system epsilon Aurigae. The UBV ob...

Title: Oscillations in Procyon A: First results from a multi-site campaign Authors: S Hekker, S Reffert, T R Bedding, H Bruntt, R P Butler, L L Kiss, S J O'Toole, E Kambe, H Ando, H Izumiura, B Sato, M Hartmann, A P Hatzes, T Appourchaux, C Barban, G Berthomieu, F Bouchy, C Catala, R A Garcia, J-C Lebrun, M...

Astronomers using the Hubble Space Telescope have photographed the close companion to Polaris, known also as the North Star, for the first time. "Hubble's exceptional pointing capabilities combined with the wonderful performance of its instruments allow scientists to see the...

Title: The moderate magnetic field on the flare star Proxima Centauri Authors: Ansgar Reiners, Gibor Basri We report moderate magnetic flux of 450G < Bf < 750G (3sigma) on the nearby M5.5 flare star Proxima Centauri. A high resolution UVES spectrum was used to measure magnetic flux from Zeem...

Title: The Current Status of Asteroseismology Authors: C. Aerts, J. Christensen-Dalsgaard, M. Cunha, D.W.Kurtz Stellar evolution, a fundamental bedrock of modern astrophysics, is driven by the physical processes in stellar interiors. While we understand these processes in general terms, w...

Expand (390kb, 1024 x 768) Aldebaran Date: 2:46 GMT, 07 September, 2007 Exposure: 10 seconds

Title: G 112-29 (=NLTT 18149), a Very Wide Companion to GJ 282 AB with a Common Proper Motion, Common Parallax, Common Radial Velocity and Common Age Authors: A. Poveda, C. Allen, R. Costero, J. Echevarria, A. Hernandez-Alcantara We have made a search for common proper motion (CPM) companions to th...

Title: HD 50844: the new look of Delta Sct stars from CoRoT space photometry Authors: E. Poretti (INAF-OA Brera), E. Michel (LESIA, Meudon), R. Garrido (IAA, Granada), L. Lefevre (LESIA), L. Mantegazza (INAF-OA Brera), M. Rainer (INAF-OA Brera), E. Rodriguez (IAA), K. Uytterhoeven (INAF-OA Bre...

Formalhaut Click to Play | View Details Fomalhaut ( PsA / Piscis Austrini / Alpha Piscis Austrini) is the brightest star in the constellation Piscis Austrinus and one of the brightest stars in the sky. Fomalhaut can be seen low in the southern sky in the northern hemisphere in the fall/winter. Its nam...

Discovery by astrophysicists to reveal size of neutron star An international team of astrophysicists, led by Sudip Bhattacharyya from the city-based Tata Institute of Fundamental Research (TIFR), have made a discovery using 'thermonuclear burst' to reveal the true size of Neutron stars. [url...

A dim star just 13 light years from Earth was born in a cluster 17,000 light years away. Discovered in 1897, Kapteyn's Star is the 25th nearest star system to our sun, but it is no local, says Elizabeth Wylie-de Boer of Mount Stromlo Observatory in Canberra. The cool star's composition is tricky to stud...

TX Piscium (19 Psc) is a variable carbon star in the constellation Pisces. It is amongst the reddest stars known, with a lovely reddish hue when seen in binoculars. Read more Position(2000): RA 23 46 23.5165, Dec +03 29 12.519

University of Michigan astronomers combined light from four widely separated telescopes to produce the first picture showing surface details on a sun-like star beyond our solar system. The image of the rapidly rotating, hot star Altair is the most detailed stellar picture ever made using an inno...

Stars are round - that's the received wisdom. But Regulus, the brightest star in the constellation Leo, is shaped like a pumpkin. That's because it is spinning so fast it can barely hold itself together. Now we may know why it whirls so quickly: another star dumped material onto it millions of years ag...

Title: Discovery of a weak magnetic field in the photosphere of the single giant Pollux Authors: M. Auriere, G.A. Wade, R. Konstantinova-Antova, C. Charbonnel, C. Catala, W. W. Weiss, T. Roudier, P. Petit, J.-F. Donati, E. Alecian, R. Cabanac, S. Van Eck, C.P. Folsom, J. Power Aims: We observe the n...

Rapidly Spinning Star Vega has Cool Dark Equator Strong darkening observed around the equator of Vega suggests that the fifth brightest star in Earth's sky has a huge temperature difference of 4,000 degrees Fahrenheit from its cool equatorial region to its hot poles. Models of th...

The ancient eye test for those wishing to join the Roman army was administered using stars in the handle of our modern-day Big Dipper. If you passed, you got a job as an archer. If you failed, you had to serve in another capacity … perhaps as a cook. It’s said that sultans of the past also tested their soldi...

New observations from NASA's Hubble Space Telescope (HST) will be presented by astronomers during a media teleconference at 1 p.m. EDT, Wednesday, June 22. link: A picture taken by Hubble has provided the most detailed visible-ligh...

Title: The corona and upper transition region of epsilon Eridani Authors: J.-U. Ness, C. Jordan We present analyses of observations of epsilon Eridani (K2 V) made with the Low Energy Transmission Grating Spectrometer on Chandra and the Extreme Ultraviolet Explorer, supplemented by observatio...

The measurement of the diameter of Canopus and the detection of spots on its surface, were carried out by an international team led by Armando Domiciano de Souza, astronomer at the Laboratory Fizeau (CNRS, Université of Nice Sophia-Antipolis, Observatoire of the Coast d' Azure-KNOWLEDGE). The...

Nearby stars from the LSPM-north Proper Motion Catalogue. I. Main Sequence Dwarfs and Giants Within 33 Parsecs of the Sun Authors: Sebastien Lepine Comments: 13 pages, accepted for publication in the Astronomical Journal A list of 4,131 dwarfs, sub gi...

Title: Oscillations in Beta UMi - Observations with SMEI Authors: N. J. Tarrant, W. J. Chaplin, Y. Elsworth, S. A. Spreckley, I. R. Stevens Aims: From observations of the K4III star Beta UMi we attempt to determine whether oscillations or any other form of variability is present. Methods: A high-qu...

Title: The limb-darkened Arcturus; Imaging with the IOTA/IONIC interferometer Authors: S. Lacour, S. Meimon, E. Thiebaut, G. Perrin, T. Verhoelst, E. Pedretti, P. A. Schuller, L. Mugnier, J. Monnier, J.P. Berger, X. Haubois, A. Poncelet, G. Le Besnerais, K. Eriksson, R. Millan-Gabet, M. Lacas...

Title: Chandra/HETGS Observations of the Capella System: the Primary as a Dominating X-ray Source Authors: Kazunori Ishibashi, Daniel Dewey, David P. Huenemoerder, Paola Testa Using the Chandra/High Energy Transmission Grating Spectrometer (hereafter HETGS) resea...

Barnard's Star, the second nearest star system to the Sun, spewed a large flare that increased its brightness, say astronomers in the United States. The discovery is a surprise: the star should be sedate, bec...

Astronomers have discovered one of the closest stars to our Sun, and they say that more undetected close neighbours may be lurking in our vicinity. The new star was found because its relatively swift motion across the sky was picked up by automated sky surveys. It ranks as the third closest star syste...

The white dwarf orbiting Sirius started as a blue star with five times the Sun's mass. If this blue star still shone today, Sirius would be so bright it would cast shadows on Earth. Just 8.6 light-years away, Sirius is already the brightest nighttime star. It is double: a bright A-type main-...

That is no Moon! It is the supergiant star, Rigel, emerging from behind Saturn. This image was captured by the Cassini spaceprobe in orbit around the planet. The image was taken in visible green light with the Cassini spacecraft narrow-angle camera at a distance of approximately 663,...

Title: Is Shedir Variable? Authors: Samuel J. George, Ian R. Stevens, Steven A. Spreckley Before the age of modern photographic and CCD observations alpha Cassiopeiae was labelled as a variable star, though this variability has not been seen with modern instrumentation. We present an analysis o...

Castor ( Gem / Geminorum / Alpha Geminorum) is the second brightest star in the constellation Gemini and one of the brightest stars in the nighttime sky. Although it has the Bayer designation "alpha", it is actually fainter than Beta Geminorum (Pollux). [url=http://en.wikipedia.org...

Title: Line-profile variability from tidal flows in Alpha Virginis (Spica) Authors: D.M. Harrington, G. Koenigsberger, E. Moreno, J.R. Kuhn (Version v2) We present the results of high precision, high resolution (R~68000) optical observations of the short-period (4d) eccentric binary syste...

Algol, (Beta Persei), in the constellation Perseus is nearly overhead at around 10:30 p.m. local time. Algol is an eclipsing binary system. The light from Algol appeared to fade every 68 hours 48 minutes and 56 seconds. Medieval Arabs were aware of its marked changes in bri...

Deneb (Alpha Cygni) is the brightest star in the constellation Cygnus and one of the vertices of the Summer Triangle. It is the 19th brightest star in the night sky, with an apparent magnitude of 1.25. A blue-white supergiant, Deneb is also one of the most luminous nearby stars. It is, or has been, know...

Delta Librae is a variable star in the constellation Libra. It has the proper name Zuben Elakribi. Delta Librae is approximately 300 light years from the Earth and belongs to the spectral class B9.5V. It is an eclipsing binary star, with a period of 2.3272 days. Its apparent magnitude varies from 4.4...

	Forum	Replies	Views	Last Post
Star Pulsar Pulsars ( 1 2 3 4 5 … 8 ) (Preview)	Stars/galaxy News	72	36056	Feb 25 13:15 2018 by Blobrana
Title: The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis Authors: D. R. Lorimer, A. J. Faulkner, A. G. Lyne, R. N. Manchester, M. Kramer, M. A. McLaughlin, G. Hobbs, A. Possenti, I. H. Stairs, F. Camilo, M. Burgay, N. D'A...
Star Alpha Centauri ( 1 2 3 4 ) (Preview)	Stars/galaxy News	34	15720	Jan 9 19:34 2017 by Blobrana
[url=http://www.activeboard.com/forum.spark?forumID=58381&subForumID=150705&action=view...
Star Mira Miras (Preview)	Stars	6	4031	Oct 6 02:16 2011 by Blobrana
Mira variables pulsate with a period between 80 and 1000 days. In visual light, the amplitude of the light change is in general between 2.5 and 10 magnitudes. In infrared the amplitude is significantly smaller. Miras are of spectral type M, S or C, dependent on the ratio between the amount of carb...
Star Epsilon Aurigae ( 1 2 3 4 ) (Preview)	Stars/galaxy News	32	10088	Mar 22 13:40 2017 by Blobrana
Title: Recent UBVJH Photometry of Epsilon Aurigae Authors: Jeffrey L. Hopkins, Robert E. Stencel Since first observed in the early 1980s, the Hopkins Phoenix Observatory continues its UBV band observations of the long period (27.1 years) eclipsing binary star system epsilon Aurigae. The UBV ob...
Star Procyon A (Preview)	Stars/galaxy News	8	5030	Mar 16 22:00 2017 by Blobrana
Title: Oscillations in Procyon A: First results from a multi-site campaign Authors: S Hekker, S Reffert, T R Bedding, H Bruntt, R P Butler, L L Kiss, S J O'Toole, E Kambe, H Ando, H Izumiura, B Sato, M Hartmann, A P Hatzes, T Appourchaux, C Barban, G Berthomieu, F Bouchy, C Catala, R A Garcia, J-C Lebrun, M...
Star Cepheids Polaris system ( 1 2 ) (Preview)	Astronomy News	13	6056	Feb 24 02:33 2015 by Blobrana
Astronomers using the Hubble Space Telescope have photographed the close companion to Polaris, known also as the North Star, for the first time. "Hubble's exceptional pointing capabilities combined with the wonderful performance of its instruments allow scientists to see the...
Star Proxima Centauri ( 1 2 ) (Preview)	Stars/galaxy News	12	5284	Apr 21 17:30 2017 by Blobrana
Title: The moderate magnetic field on the flare star Proxima Centauri Authors: Ansgar Reiners, Gibor Basri We report moderate magnetic flux of 450G < Bf < 750G (3sigma) on the nearby M5.5 flare star Proxima Centauri. A high resolution UVES spectrum was used to measure magnetic flux from Zeem...
Star Asteroseismology (Preview)	Astronomy News	6	2388	Sep 9 14:41 2014 by Blobrana
Title: The Current Status of Asteroseismology Authors: C. Aerts, J. Christensen-Dalsgaard, M. Cunha, D.W.Kurtz Stellar evolution, a fundamental bedrock of modern astrophysics, is driven by the physical processes in stellar interiors. While we understand these processes in general terms, w...
Star Aldebaran (Preview)	Observations	4	2505	May 14 09:01 2015 by Blobrana
Expand (390kb, 1024 x 768) Aldebaran Date: 2:46 GMT, 07 September, 2007 Exposure: 10 seconds
Star G 112-29 (Preview)	Stars/galaxy News	0	1325	Oct 16 21:46 2009 by Blobrana
Title: G 112-29 (=NLTT 18149), a Very Wide Companion to GJ 282 AB with a Common Proper Motion, Common Parallax, Common Radial Velocity and Common Age Authors: A. Poveda, C. Allen, R. Costero, J. Echevarria, A. Hernandez-Alcantara We have made a search for common proper motion (CPM) companions to th...
Star HD 50844 (Preview)	Stars/galaxy News	1	1405	Jun 16 13:29 2009 by Blobrana
Title: HD 50844: the new look of Delta Sct stars from CoRoT space photometry Authors: E. Poretti (INAF-OA Brera), E. Michel (LESIA, Meudon), R. Garrido (IAA, Granada), L. Lefevre (LESIA), L. Mantegazza (INAF-OA Brera), M. Rainer (INAF-OA Brera), E. Rodriguez (IAA), K. Uytterhoeven (INAF-OA Bre...
Star Formalhaut (Preview)	Videos	0	1552	Jan 18 18:53 2009 by Blobrana
Formalhaut Click to Play \| View Details Fomalhaut ( PsA / Piscis Austrini / Alpha Piscis Austrini) is the brightest star in the constellation Piscis Austrinus and one of the brightest stars in the sky. Fomalhaut can be seen low in the southern sky in the northern hemisphere in the fall/winter. Its nam...
Star Neutron stars ( 1 2 3 ) (Preview)	Stars/galaxy News	21	6112	Sep 9 14:36 2014 by Blobrana
Discovery by astrophysicists to reveal size of neutron star An international team of astrophysicists, led by Sudip Bhattacharyya from the city-based Tata Institute of Fundamental Research (TIFR), have made a discovery using 'thermonuclear burst' to reveal the true size of Neutron stars. [url...
Star VZ Pictoris (Preview)	Stars/galaxy News	3	2652	Jun 4 08:53 2014 by Blobrana
A dim star just 13 light years from Earth was born in a cluster 17,000 light years away. Discovered in 1897, Kapteyn's Star is the 25th nearest star system to our sun, but it is no local, says Elizabeth Wylie-de Boer of Mount Stromlo Observatory in Canberra. The cool star's composition is tricky to stud...
Variable Star TX Piscium (Preview)	Stars/galaxy News	2	2080	Jan 5 00:39 2013 by Blobrana
TX Piscium (19 Psc) is a variable carbon star in the constellation Pisces. It is amongst the reddest stars known, with a lovely reddish hue when seen in binoculars. Read more Position(2000): RA 23 46 23.5165, Dec +03 29 12.519
Star Aquila Altair (Preview)	Stars/galaxy News	6	2909	Apr 19 16:26 2015 by Blobrana
University of Michigan astronomers combined light from four widely separated telescopes to produce the first picture showing surface details on a sun-like star beyond our solar system. The image of the rapidly rotating, hot star Altair is the most detailed stellar picture ever made using an inno...
Star Regulus Regulus (Preview)	Stars/galaxy News	2	2088	Mar 15 15:30 2017 by Blobrana
Stars are round - that's the received wisdom. But Regulus, the brightest star in the constellation Leo, is shaped like a pumpkin. That's because it is spinning so fast it can barely hold itself together. Now we may know why it whirls so quickly: another star dumped material onto it millions of years ag...
Star Pollux (Preview)	Stars/galaxy News	2	2544	Jul 28 19:48 2015 by Blobrana
Title: Discovery of a weak magnetic field in the photosphere of the single giant Pollux Authors: M. Auriere, G.A. Wade, R. Konstantinova-Antova, C. Charbonnel, C. Catala, W. W. Weiss, T. Roudier, P. Petit, J.-F. Donati, E. Alecian, R. Cabanac, S. Van Eck, C.P. Folsom, J. Power Aims: We observe the n...
Star Vega ( 1 2 ) (Preview)	Stars/galaxy News	11	8222	Jan 9 01:50 2013 by Blobrana
Rapidly Spinning Star Vega has Cool Dark Equator Strong darkening observed around the equator of Vega suggests that the fifth brightest star in Earth's sky has a huge temperature difference of 4,000 degrees Fahrenheit from its cool equatorial region to its hot poles. Models of th...
Star Alcor Mizar (Preview)	Stars/galaxy News	2	1710	Apr 11 12:47 2010 by Blobrana
The ancient eye test for those wishing to join the Roman army was administered using stars in the handle of our modern-day Big Dipper. If you passed, you got a job as an archer. If you failed, you had to serve in another capacity … perhaps as a cook. It’s said that sultans of the past also tested their soldi...
Star Fomalhaut ( 1 2 3 4 ) (Preview)	Stars/galaxy News	34	20457	Sep 4 20:21 2015 by Blobrana
New observations from NASA's Hubble Space Telescope (HST) will be presented by astronomers during a media teleconference at 1 p.m. EDT, Wednesday, June 22. link: A picture taken by Hubble has provided the most detailed visible-ligh...
Star Epsilon Eridani ( 1 2 ) (Preview)	Stars/galaxy News	14	5914	May 5 12:15 2017 by Blobrana
Title: The corona and upper transition region of epsilon Eridani Authors: J.-U. Ness, C. Jordan We present analyses of observations of epsilon Eridani (K2 V) made with the Low Energy Transmission Grating Spectrometer on Chandra and the Extreme Ultraviolet Explorer, supplemented by observatio...
Star Canopus (Preview)	Stars/galaxy News	0	1397	Sep 23 15:42 2008 by Blobrana
The measurement of the diameter of Canopus and the detection of spots on its surface, were carried out by an international team led by Armando Domiciano de Souza, astronomer at the Laboratory Fizeau (CNRS, Université of Nice Sophia-Antipolis, Observatoire of the Coast d' Azure-KNOWLEDGE). The...
Star Nearby stars (Preview)	Stars/galaxy News	3	3131	Feb 1 10:28 2012 by Blobrana
Nearby stars from the LSPM-north Proper Motion Catalogue. I. Main Sequence Dwarfs and Giants Within 33 Parsecs of the Sun Authors: Sebastien Lepine Comments: 13 pages, accepted for publication in the Astronomical Journal A list of 4,131 dwarfs, sub gi...
Star Beta UMi (Kocab) (Preview)	Stars/galaxy News	0	1525	Apr 22 06:20 2008 by Blobrana
Title: Oscillations in Beta UMi - Observations with SMEI Authors: N. J. Tarrant, W. J. Chaplin, Y. Elsworth, S. A. Spreckley, I. R. Stevens Aims: From observations of the K4III star Beta UMi we attempt to determine whether oscillations or any other form of variability is present. Methods: A high-qu...
Star Arcturus (Preview)	Stars/galaxy News	5	2633	May 15 12:38 2017 by Blobrana
Title: The limb-darkened Arcturus; Imaging with the IOTA/IONIC interferometer Authors: S. Lacour, S. Meimon, E. Thiebaut, G. Perrin, T. Verhoelst, E. Pedretti, P. A. Schuller, L. Mugnier, J. Monnier, J.P. Berger, X. Haubois, A. Poncelet, G. Le Besnerais, K. Eriksson, R. Millan-Gabet, M. Lacas...
Star Capella (Preview)	Stars/galaxy News	3	4638	May 29 16:34 2015 by Blobrana
Title: Chandra/HETGS Observations of the Capella System: the Primary as a Dominating X-ray Source Authors: Kazunori Ishibashi, Daniel Dewey, David P. Huenemoerder, Paola Testa Using the Chandra/High Energy Transmission Grating Spectrometer (hereafter HETGS) resea...
Star Barnard's Star (Preview)	Stars/galaxy News	2	2363	Aug 15 01:08 2012 by Blobrana
Barnard's Star, the second nearest star system to the Sun, spewed a large flare that increased its brightness, say astronomers in the United States. The discovery is a surprise: the star should be sedate, bec...
Star Teegarden's Star (Preview)	Stars/galaxy News	1	1614	Jan 23 07:14 2012 by Blobrana
Astronomers have discovered one of the closest stars to our Sun, and they say that more undetected close neighbours may be lurking in our vicinity. The new star was found because its relatively swift motion across the sky was picked up by automated sky surveys. It ranks as the third closest star syste...
Star Sirius (Preview)	Stars/galaxy News	8	9552	Jan 31 07:48 2013 by Blobrana
The white dwarf orbiting Sirius started as a blue star with five times the Sun's mass. If this blue star still shone today, Sirius would be so bright it would cast shadows on Earth. Just 8.6 light-years away, Sirius is already the brightest nighttime star. It is double: a bright A-type main-...
Orion Star Rigel (Preview)	Stars/galaxy News	2	2520	Jan 5 09:55 2012 by Blobrana
That is no Moon! It is the supergiant star, Rigel, emerging from behind Saturn. This image was captured by the Cassini spaceprobe in orbit around the planet. The image was taken in visible green light with the Cassini spacecraft narrow-angle camera at a distance of approximately 663,...
Star alpha Cassiopeiae (Preview)	Stars/galaxy News	0	1303	May 28 01:09 2009 by Blobrana
Title: Is Shedir Variable? Authors: Samuel J. George, Ian R. Stevens, Steven A. Spreckley Before the age of modern photographic and CCD observations alpha Cassiopeiae was labelled as a variable star, though this variability has not been seen with modern instrumentation. We present an analysis o...
Star Alpha Geminorum (Preview)	Stars/galaxy News	1	2073	Jan 18 00:32 2010 by Blobrana
Castor ( Gem / Geminorum / Alpha Geminorum) is the second brightest star in the constellation Gemini and one of the brightest stars in the nighttime sky. Although it has the Bayer designation "alpha", it is actually fainter than Beta Geminorum (Pollux). [url=http://en.wikipedia.org...
Star Alpha Virginis (Preview)	Stars/galaxy News	3	2720	Mar 26 23:27 2017 by Blobrana
Title: Line-profile variability from tidal flows in Alpha Virginis (Spica) Authors: D.M. Harrington, G. Koenigsberger, E. Moreno, J.R. Kuhn (Version v2) We present the results of high precision, high resolution (R~68000) optical observations of the short-period (4d) eccentric binary syste...
Star Algol ( 1 2 3 4 5 … 33 ) (Preview)	Events	326	49593	May 24 17:26 2018 by Blobrana
Algol, (Beta Persei), in the constellation Perseus is nearly overhead at around 10:30 p.m. local time. Algol is an eclipsing binary system. The light from Algol appeared to fade every 68 hours 48 minutes and 56 seconds. Medieval Arabs were aware of its marked changes in bri...
Star Deneb (Preview)	Stars	0	1250	Aug 26 13:23 2011 by Blobrana
Deneb (Alpha Cygni) is the brightest star in the constellation Cygnus and one of the vertices of the Summer Triangle. It is the 19th brightest star in the night sky, with an apparent magnitude of 1.25. A blue-white supergiant, Deneb is also one of the most luminous nearby stars. It is, or has been, know...
Star Delta Librae ( 1 2 3 4 5 ) (Preview)	Stars	41	8511	Nov 30 07:22 2012 by Blobrana
Delta Librae is a variable star in the constellation Libra. It has the proper name Zuben Elakribi. Delta Librae is approximately 300 light years from the Earth and belongs to the spectral class B9.5V. It is an eclipsing binary star, with a period of 2.3272 days. Its apparent magnitude varies from 4.4...