Lambda Piscium

Lambda Piscium^[1]
Observation data Epoch J2000.0 Equinox J2000.0
Location of λ Piscium(circled)
Constellation	Pisces
Right ascension	23^h 42^m 02.8062^s
Declination	+1° 46′ 48.147″
Apparent magnitude (V)	4.49
Characteristics
Spectral type	A7V^[2]
U−B color index	+0.07
B−V color index	+0.21
Astrometry

Radial velocity (R_v)	+12.4 km/s
Proper motion (μ)	RA: -129.55 mas/yr Dec.: -154.87 mas/yr
Parallax (π)	32.38 ± 0.84 mas
Distance	101 ± 3 ly (30.9 ± 0.8 pc)

Details

Mass	1.806^[2] M_☉
Radius	7000204029999999999♠2.0403±0.0451^[2] R_☉
Luminosity	7001133897000000000♠13.3897±0.1692^[2] L_☉
Temperature	7003773400000000000♠7734±80^[2] K
Age	900^[2] Myr

Other designations
λ Piscium, λ Psc, Lambda Psc, 18 Piscium, BD+00°5037, FK5 1620, GC 32917, HD 222603, HIP 116928, HR 8984, PPM 174348, SAO 128336.

Lambda Piscium (Lambda Psc, λ Piscium, λ Psc) is a star approximately 101 light years away from Earth in the constellation Pisces. It is a bluish-white star of A7V spectral classification, meaning it has a surface temperature of 7,500 to 11,000 kelvins. It is much brighter and hotter in surface temperature than the Sun, yet is approximately the same size.^[3] Lambda Piscium forms the southeast corner of the "Circlet" in Pisces.^[4]

Naming

In Chinese, 雲雨 (Yún Yǔ), meaning Cloud and Rain, refers to an asterism consisting of λ Piscium, κ Piscium, 12 Piscium and 21 Piscium. Consequently, λ Piscium itself is known as 雲雨四 (Yún Yǔ sì, English: the Fourth Star of Cloud and Rain.)^[5]

References

↑ "Simbad Query Result". Simbad. Retrieved September 30, 2007.
1 2 3 4 5 6 Boyajian, Tabetha S.; et al. (July 2013), "Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations", The Astrophysical Journal, 771 (1): 31, arXiv:1306.2974, Bibcode:2013ApJ...771...40B, doi:10.1088/0004-637X/771/1/40, 40. See Table 3.
↑ "Hipparcos Star Catalog Entry". Retrieved September 30, 2007.
↑ "Space.com - Meteor Watch, September 1-7, 2000". Retrieved September 30, 2007.
↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 8 日

Stars of Pisces

Bayer	α (Alrescha) β (Fum al Samakah) γ δ ε ζ η (Kullat Nunu) θ ι κ λ μ ν ξ ο (Torcularis Septentrionalis) π ρ σ τ υ φ χ ψ¹ ψ² ψ³ ω

Flamsteed	1 2 3 5 7 9 11 12 13 14 15 16 20 21 22 24 25 26 27 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 51 52 53 54 55 57 58 59 60 61 62 64 65 66 67 68 70 72 73 75 76 77 78 80 82 87 88 89 91 92 94 95 96 97 100 101 103 104 105 107 109 112 4 Cet 5 Cet

Variable	R Y RU RV RZ SS SV SZ TX (19) TY UV UZ VY (3 Ari) VZ WW WX WZ XZ AO AQ AR AY AZ BE BK BR BT BU CY DT DV DZ EO FL GU

HR	2 29 67 69 94 107 141 145 161 222 243 259 276 277 303 341 344 356 371 374 397 407 426 450 457 484 527 8730 8734 8735 8738 8751 8776 8785 8897 8983 9015

HD	26 1502 2358 4203 4313 5418 5891 7107 8574 8733 9496 9986 10262 12730 217590 217786 218566 219188 224690

Gliese	GJ 1286 GJ 3076 GJ 3128

Other	Bond's flare star CS 22949-037 Feige 110 G 29-38 2MASS 0036+1821 NGC 33 NGC 46 PG 0014+067 PG 0122+200 PSR J0030+0451 1RXS J232953.9+062814 SIMP J013656.5+093347 van Maanen 2 WASP-28 WASP-32

List

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