WISEPA J031325.96+780744.2

Coordinates: 03^h 13^m 26.02^s, +78° 07′ 44.4″

WISEPA J031325.96+780744.2

Observation data Epoch MJD 55448.07[1]      Equinox J2000[1]
Constellation	Cepheus
Right ascension	03^h 13^m 26.02^s[1]
Declination	78° 07′ 44.4″[1]
Characteristics
Spectral type	T8.5[1][2]
Apparent magnitude (J (2MASS filter system))	17.65 ± 0.07[1]
Apparent magnitude (H (2MASS filter system))	17.63 ± 0.06[1]
Astrometry
Proper motion (μ)	RA: 147 ± 151[1] mas/yr Dec.: -4 ± 148[1] mas/yr
Parallax (π)	153 ± 15[3] mas
Distance	21 ± 2 ly (6.5 ± 0.6 pc)
Other designations
WISEPA J031325.96+780744.2[1] WISE J0313+7807[1] WISE 0313+7807[1]

WISEPA J031325.96+780744.2 (designation abbreviated to WISE 0313+7807, or WISE J0313+7807) is a brown dwarf of spectral class T8.5,^[1][2] located in constellation Cepheus at approximately 21 light-years from Earth.^[3]

Discovery

WISE 0313+7807 was discovered in 2011 by J. Davy Kirkpatrick et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. In 2011 Kirkpatrick et al. published a paper in The Astrophysical Journal Supplement, where they presented discovery of 98 new found by WISE brown dwarf systems with components of spectral types M, L, T and Y, among which also was WISE 0313+7807.^{[1][note 1]}

Distance

Trigonometric parallax of WISE 0313+7807 is 153 ± 15 mas, corresponding to distance of 6.5+0.7
−0.6 pc or 21.3+2.3
−1.9 ly.^[3]

Notes

1. This 98 brown dwarf systems are only among first, not all brown dwarf systems, discovered from data, collected by WISE: six discoveries was published earlier (however, also listed in Kirkpatrick et al. (2011)) in Mainzer et al. (2011) and Burgasser et al. (2011), and the other discoveries was published later.

References

1. Kirkpatrick, J. Davy; Cushing, Michael C.; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Mainzer, A.; Eisenhardt, Peter R.; McLean, Ian S.; Thompson, Maggie A.; Bauer, James M.; Benford, Dominic J.; Bridge, Carrie R.; Lake, Sean E.; Petty, Sara M.; Stanford, S. A.; Tsai, Chao-Wei; Bailey, Vanessa; Beichman, Charles A.; Bloom, Joshua S.; Bochanski, John J.; Burgasser, Adam J.; Capak, Peter L.; Cruz, Kelle L.; Hinz, Philip M.; Kartaltepe, Jeyhan S.; Knox, Russell P.; Manohar, Swarnima; Masters, Daniel; Morales-Calderon, Maria; Prato, Lisa A.; Rodigas, Timothy J.; Salvato, Mara; Schurr, Steven D.; Scoville, Nicholas Z.; Simcoe, Robert A.; Stapelfeldt, Karl R.; Stern, Daniel; Stock, Nathan D.; Vacca, William D. (2011). "The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)". The Astrophysical Journal Supplement 197 (2): 19. arXiv:1108.4677v1. Bibcode:2011ApJS..197...19K. doi:10.1088/0067-0049/197/2/19.
2. Kirkpatrick, J. D.; Gelino, C. R.; Cushing, M. C.; Mace, G. N.; Griffith, R. L.; Skrutskie, M. F.; Marsh, K. A.; Wright, E. L.; Eisenhardt, P. R.; McLean, I. S.; Mainzer, A. K.; Burgasser, A. J.; Tinney, C. G.; Parker, S.; Salter, G. (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156.
3. Beichman, C.; Gelino, Christopher R.; Kirkpatrick, J. Davy; Cushing, Michael C.; Dodson-Robinson, Sally; Marley, Mark S.; Morley, Caroline V.; Wright, E. L. (2014). "WISE Y Dwarfs As Probes of the Brown Dwarf-Exoplanet Connection". The Astrophysical Journal 783 (2): 68. arXiv:1401.1194v2. Bibcode:2014ApJ...783...68B. doi:10.1088/0004-637X/783/2/68.