HAT-P-4

HAT-P-4
Observation data; Epoch J2000 Equinox ICRS
Constellation	Boötes
	HAT-P-4A
Right ascension	15h 19m 57.9204s
Declination	+36° 13′ 46.738″
Apparent magnitude (V)	11.159±0.010
	HAT-P-4B
Right ascension	15h 20m 00.0127s
Declination	+36° 12′ 18.520″
Apparent magnitude (V)	11.534±0.01
Characteristics
HAT-P-4A
Spectral type	G0V
B−V color index	0.771
Variable type	planetary transit
HAT-P-4B
Spectral type	G2V
Astrometry
HAT-P-4A
Radial velocity (Rv)	−1.13(37) km/s
Proper motion (μ)	RA: −21.513(13) mas/yr ; Dec.: −24.255(19) mas/yr
Parallax (π)	3.1071±0.0154 mas
Distance	1,050 ± 5 ly ; (322 ± 2 pc)
HAT-P-4B
Radial velocity (Rv)	−1.31(35) km/s
Proper motion (μ)	RA: −21.424(13) mas/yr ; Dec.: −24.182(20) mas/yr
Parallax (π)	3.0777±0.0155 mas
Distance	1,060 ± 5 ly ; (325 ± 2 pc)
Position (relative to HAT-P-4A)
Component	HAT-P-4B
Epoch of observation	1999/02/07
Angular distance	91.760±0.099″
Position angle	163.97±0.06°
Projected separation	28446 AU
Details
HAT-P-4A
Mass	1.260+0.043; −0.042 M☉
Radius	1.573±0.015 R☉
Luminosity	2.8 L☉
Surface gravity (log g)	4.145±0.015 cgs
Temperature	5927+57; −47 K
Metallicity [Fe/H]	0.277±0.007 dex
Rotational velocity (v sin i)	5.6 ± 0.9 km/s
Age	~4.2 Gyr
HAT-P-4B
Mass	1.0 M☉
Radius	1.3 R☉
Luminosity	2.0 L☉
Surface gravity (log g)	4.38±0.14 cgs
Temperature	6037±37 K
Metallicity [Fe/H]	0.175±0.006 dex
Age	7.8 Gyr
Other designations
	HAT-P-4A: BD+36°2593, SAO 64638, TYC 2569-1599-1, GSC 02569-01599, 2MASS J15195792+3613467
	HAT-P-4B: TYC 2569-744-1, 2MASS J15200001+3612185
Database references
SIMBAD	A
	B
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

HAT-P-4 is a wide binary star consisting of a pair of G-type main-sequence stars⁵ in the constellation of Boötes.¹ It also has the BD designation BD+36°2593.

The star exhibits an infrared excess of unknown origin.¹²

Binary companion

The companion star is located at a distance of 28446 astronomical units and therefore has an orbital period that is extremely long.⁵

Planetary system

The primary star is home to the transiting extrasolar planet HAT-P-4b.⁶ This planet is a fairly typical hot Jupiter type planet in a 3-day orbit.⁶

The HAT-P-4A planetary system¹³¹⁴
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination (°)	Radius
b	0.651+0.033 −0.037 `M`_J	0.04449+0.00083 −0.0012	3.0565254±0.0000012	<0.0073	—	1.28^+0.016 _−0.015⁷ `R`_J

References

Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
Henden, A. A.; et al. (2016). "VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)". VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H. 2336. Bibcode:2016yCat.2336....0H. Vizier catalog entry for component A Vizier catalog entry for component B
Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
Mugrauer, M.; Ginski, C.; Seeliger, M. (2014). "New wide stellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 439 (1): 1063–1070. Bibcode:2014MNRAS.439.1063M. doi:10.1093/mnras/stu044.
Kovács, G.; et al. (2007). "HAT-P-4b: A Metal-rich Low-Density Transiting Hot Jupiter". The Astrophysical Journal Letters. 670 (1): L41–L44. arXiv:0710.0602. Bibcode:2007ApJ...670L..41K. doi:10.1086/524058. S2CID 14966730.
Wang, Xian-Yu; et al. (1 July 2021). "Transiting Exoplanet Monitoring Project (TEMP). VI. The Homogeneous Refinement of System Parameters for 39 Transiting Hot Jupiters with 127 New Light Curves". The Astrophysical Journal Supplement Series. 255 (1). 15. arXiv:2105.14851. Bibcode:2021ApJS..255...15W. doi:10.3847/1538-4365/ac0835. S2CID 235253975.
Saffe, C.; et al. (2017). "Signatures of rocky planet engulfment in HAT-P-4. Implications for chemical tagging studies". Astronomy and Astrophysics Letters. 604. L4. arXiv:1707.02180. Bibcode:2017A&A...604L...4S. doi:10.1051/0004-6361/201731430. S2CID 119204481.
Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. S2CID 16580774.
"BD+36 2593". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-24.
"TYC 2569-744-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-24.
Sada, Pedro V.; Deming, Drake; Jennings, Donald E.; Jackson, Brian k.; Hamilton, Catrina M.; Fraine, Jonathan; Peterson, Steven W.; Haase, Flynn; Bays, Kevin; Lunsford, Allen; o'Gorman, Eamon (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv:1202.2799. Bibcode:2012PASP..124..212S. doi:10.1086/665043. S2CID 29665395.
Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID 118923163.
Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv:1202.2799. Bibcode:2012PASP..124..212S. doi:10.1086/665043. S2CID 29665395.

External links

Image HAT-P-4
"HAT-P-4". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-10.

[Roman1987-1] Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.

[Gaia_DR3_A-2] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[APASS_DR9-3] Henden, A. A.; et al. (2016). "VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)". VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H. 2336. Bibcode:2016yCat.2336....0H. Vizier catalog entry for component A Vizier catalog entry for component B

[Gaia_DR3_B-4] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[Mugrauer2014-5] Mugrauer, M.; Ginski, C.; Seeliger, M. (2014). "New wide stellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 439 (1): 1063–1070. Bibcode:2014MNRAS.439.1063M. doi:10.1093/mnras/stu044.

[Kovács2007-6] Kovács, G.; et al. (2007). "HAT-P-4b: A Metal-rich Low-Density Transiting Hot Jupiter". The Astrophysical Journal Letters. 670 (1): L41–L44. arXiv:0710.0602. Bibcode:2007ApJ...670L..41K. doi:10.1086/524058. S2CID 14966730.

[Wang2021-7] Wang, Xian-Yu; et al. (1 July 2021). "Transiting Exoplanet Monitoring Project (TEMP). VI. The Homogeneous Refinement of System Parameters for 39 Transiting Hot Jupiters with 127 New Light Curves". The Astrophysical Journal Supplement Series. 255 (1). 15. arXiv:2105.14851. Bibcode:2021ApJS..255...15W. doi:10.3847/1538-4365/ac0835. S2CID 235253975.

[Saffe2017-8] Saffe, C.; et al. (2017). "Signatures of rocky planet engulfment in HAT-P-4. Implications for chemical tagging studies". Astronomy and Astrophysics Letters. 604. L4. arXiv:1707.02180. Bibcode:2017A&A...604L...4S. doi:10.1051/0004-6361/201731430. S2CID 119204481.

[Torres2012-9] Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. S2CID 16580774.

[Simbad_for_A-10] "BD+36 2593". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-24.

[Simbad_for_B-11] "TYC 2569-744-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-24.

[sada2012-12] Sada, Pedro V.; Deming, Drake; Jennings, Donald E.; Jackson, Brian k.; Hamilton, Catrina M.; Fraine, Jonathan; Peterson, Steven W.; Haase, Flynn; Bays, Kevin; Lunsford, Allen; o'Gorman, Eamon (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv:1202.2799. Bibcode:2012PASP..124..212S. doi:10.1086/665043. S2CID 29665395.

[Bonomo2017-13] Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID 118923163.

[Sada2012-14] Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv:1202.2799. Bibcode:2012PASP..124..212S. doi:10.1086/665043. S2CID 29665395.

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Observation data Epoch J2000 Equinox ICRS
Constellation	Boötes¹
HAT-P-4A
Right ascension	15^h 19^m 57.9204^s²
Declination	+36° 13′ 46.738″²
Apparent magnitude (V)	11.159±0.010³
HAT-P-4B
Right ascension	15^h 20^m 00.0127^s⁴
Declination	+36° 12′ 18.520″⁴
Apparent magnitude (V)	11.534±0.01³
Characteristics
HAT-P-4A
Spectral type	G0V⁵
B−V color index	0.771
Variable type	planetary transit⁶
HAT-P-4B
Spectral type	G2V⁵
Astrometry
HAT-P-4A
Radial velocity (R_v)	−1.13(37)² km/s
Proper motion (μ)	RA: −21.513(13) mas/yr² Dec.: −24.255(19) mas/yr²
Parallax (π)	3.1071±0.0154 mas²
Distance	1,050 ± 5 ly (322 ± 2 pc)
HAT-P-4B
Radial velocity (R_v)	−1.31(35)⁴ km/s
Proper motion (μ)	RA: −21.424(13) mas/yr⁴ Dec.: −24.182(20) mas/yr⁴
Parallax (π)	3.0777±0.0155 mas⁴
Distance	1,060 ± 5 ly (325 ± 2 pc)
Position (relative to HAT-P-4A)⁵

Component	HAT-P-4B
Epoch of observation	1999/02/07
Angular distance	91.760±0.099″
Position angle	163.97±0.06°
Projected separation	28446 AU
Details
HAT-P-4A
Mass	1.260^+0.043 _−0.042⁷ `M`_☉
Radius	1.573±0.015⁷ R_☉
Luminosity	2.8² `L`_☉
Surface gravity (log g)	4.145±0.015⁷ cgs
Temperature	5927⁺⁵⁷ ₋₄₇⁷ K
Metallicity [Fe/H]	0.277±0.007⁸ dex
Rotational velocity (v sin i)	5.6 ± 0.9⁹ km/s
Age	~4.2 Gyr
HAT-P-4B
Mass	1.0⁴ `M`_☉
Radius	1.3⁴ R_☉
Luminosity	2.0⁴ `L`_☉
Surface gravity (log g)	4.38±0.14⁸ cgs
Temperature	6037±37⁸ K
Metallicity [Fe/H]	0.175±0.006⁸ dex
Age	7.8⁴ Gyr
Other designations

HAT-P-4A: BD+36°2593, SAO 64638, TYC 2569-1599-1, GSC 02569-01599, 2MASS J15195792+3613467¹⁰
HAT-P-4B: TYC 2569-744-1, 2MASS J15200001+3612185¹¹
Database references
SIMBAD	A
	B
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

Binary companion

Planetary system

See also

References

External links