Pi Boötis, Latinized from π Boötis, is a probable triple star system in the northern constellation of Boötes. It is visible to the naked eye with a combined...

formed from modern Zeta, Omicron and Pi Boötis, while Yousheti was formed from modern Eta, Tau and Upsilon Boötis. Dixi, the Emperor's ceremonial banquet...

prominent stars, Arcturus (α Boötis), Seginus (γ Boötis), Alphecca (α Coronae Borealis), and centered on Izar (ε Boötis). From the United Kingdom in particular...

Film No Song Composer(s) Co-artist(s) 101 Days 440 "Pi Ka Naam" Raam Laxman Solo Aaj Ki Taaqat 441 "Jaan Meri Jaanu" Bappi Lahiri Bappi Lahiri 442 "Hello...

to as the Pyramid Cluster. It is positioned two degrees south of the star Pi Cygni and around 9° east-northeast of Deneb. The cluster was discovered by...

Pi Piscium (π Piscium) is a solitary, yellow-white hued star in the zodiac constellation of Pisces. It is faintly visible to the naked eye, having an apparent...

Star 3.49 3.47 Beta Boötis Star 3.49 Alpha Telescopii Star Suspected variable star 3.49 Nu Ursae Majoris Star 3.49 Delta Boötis Double star 3.50 Tau...

The PL-15 (Chinese: 霹雳-15; pinyin: Pī Lì-Yāo Wǔ; lit. 'Thunderbolt-15', NATO reporting name: CH-AA-10 Abaddon) is an active radar-guided long-range air-to-air...

7 times larger and more massive than the Sun. It was a candidate Lambda Boötis star, suggesting it may have accreted low-metallicity circumstellar gas...

integration from θ = − π 2 {\textstyle \theta =-{\frac {\pi }{2}}} to θ = π 2 {\textstyle \theta ={\frac {\pi }{2}}} and conservation of energy, and sinc ⁡ x =...

{\frac {{\text{d}}T(r)}{{\text{d}}r}}\ =\ -{\frac {3\kappa (r)\rho (r)L(r)}{(4\pi r^{2})(16\sigma _{B})T^{3}(r)}}} where κ(r) is the opacity, ρ(r) is the matter...

ancient (Ptolemy) charioteer Capella 0.08 Boötes /boʊˈoʊtiːz/ Boo Boot Boötis ancient (Ptolemy) herdsman Arcturus -0.05 Caelum /ˈsiːləm/ Cae Cael Caeli...

equation: d m d r = 4 π r 2 ρ . {\displaystyle {{\mbox{d}}m \over {\mbox{d}}r}=4\pi r^{2}\rho .} Integrating the mass continuity equation from the star center...

. {\displaystyle U=-G\int _{0}^{R}{\frac {4\pi r^{3}\rho 4\pi r^{2}\rho }{3r}}\,dr=-{\frac {16}{15}}G\pi ^{2}\rho ^{2}R^{5}.} Recasting in terms of the...

Has 4 exoplanets. HD 204313 157.0 ± 0.3 1 G5V 7.99 Has 3 exoplanets. Rho Boötis 160 ± 1 1 K4 III 3.59 Beta Canis Minoris (Gomeisa) 161 1 B8V Rho Andromedae...

{\displaystyle G\rho ={d \over 4\pi r^{2}dr}{r^{2}d\Phi \over dr}={d(GM) \over 4\pi r^{2}dr}={3V_{0}^{2} \over 4\pi r_{0}^{2}}H(r_{0}-r),} where the enclosed...

{4\pi r^{3}p(r)}{M(r)c^{2}}}\right)\left(1-{\frac {2GM(r)}{c^{2}r}}\right)} d M d r = 4 π c 2 r 2 ϵ ( r ) {\displaystyle {\frac {dM}{dr}}={\frac {4\pi...

The first non-transiting planet to have its mass found this way was Tau Boötis b in 2012 when carbon monoxide was detected in the infrared part of the...

π G 3 / 2 ( μ H k ) 5 / 2 M 1 / 2 R 3 / 2 P T 5 / 2 , {\displaystyle E=4\pi G^{3/2}\left({\frac {\mu H}{k}}\right)^{5/2}{\frac {M^{1/2}R^{3/2}P}{T^{5/2}}}...

{\displaystyle \psi _{0}\left(\mathbf {r} ,t\right)=A_{u}e^{i\left(\phi _{u}+2\pi \nu t+\mathbf {k} \cdot \mathbf {r} \right)}} where ψ 0 {\displaystyle \psi...

Semi-classically, the cross section is proportional to π λ 2 {\displaystyle \pi \,\lambda ^{2}} , where λ = h / p {\displaystyle \lambda =h/p} is the de Broglie...

radiated by the planet: P r a d = 4 π r 2 σ T 4 {\displaystyle P_{\rm {rad}}=4\pi r^{2}\sigma T^{4}} Equating these two expressions and rearranging gives an...

{c}{\kappa }}\int _{V}\nabla ^{2}\Phi \,dV={\frac {4\pi Gc}{\kappa }}\int _{V}\rho \,dV={\frac {4\pi GMc}{\kappa }}} where M {\displaystyle M} is the mass...

applied to a perfect black body: L = 4 π R 2 σ T e f f 4 {\displaystyle L=4\pi R^{2}\sigma \,T_{eff}^{4}} . Thus, any value of R corresponds to a certain...

x\approx x{\text{ radians}}=x\cdot {\frac {180}{\pi }}{\text{ degrees}}=x\cdot 180\cdot {\frac {3600}{\pi }}{\text{ arcseconds}},} so the parallax, measured...

47.1 ± 5.9 1 T6 WISE 0744+5628 47.3 1 T8 WISE 1309-1600 47.3 1 T? Theta Boötis «Asellus Primus» 47.5 ± 0.4 2 F7V 4.05 Nu² Lupi 47.5 ± 0.5 1 G2V 5.78 has...

a peculiarity; it is a binary with the primary component being a Lambda Boötis star, meaning that it has solar-like amounts of carbon, nitrogen, and oxygen...

{\displaystyle {\begin{aligned}{\frac {dT}{dt}}&={\frac {-3\rho \kappa l(r)}{64\pi \sigma _{sb}T^{3}r^{2}}}\\[4pt]\end{aligned}}} The equation for radiative...

70μm, suggesting it is being orbited by a cold debris disk. In Chinese, 霹靂 (Pī Lì), meaning Thunderbolt, refers to an asterism consisting of ι Piscium, β...

\left(12\pi n\lambda _{D}^{3}\right)} is the Coulomb logarithm, and λ D = k B T 4 π n e 2 {\displaystyle \lambda _{D}={\sqrt {\frac {k_{\text{B}}T}{4\pi ne^{2}}}}}...