Global Information Lookup Global Information

4 Ursae Majoris information


Pi2 Ursae Majoris
Diagram showing star positions and boundaries of the Centaurus constellation and its surroundings
Diagram showing star positions and boundaries of the Centaurus constellation and its surroundings

Location of π2 Ursae Majoris (circled) near the center
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Major
Right ascension 08h 40m 12.81767s[1]
Declination +64° 19′ 40.5700″[1]
Apparent magnitude (V) +4.620[2]
Characteristics
Spectral type K2 III[3]
U−B color index +1.193[2]
B−V color index +1.159[2]
Astrometry
Radial velocity (Rv)+14.62[4] km/s
Proper motion (μ) RA: −60.05[1] mas/yr
Dec.: +26.40[1] mas/yr
Parallax (π)12.74 ± 0.26 mas[1]
Distance256 ± 5 ly
(78 ± 2 pc)
Absolute magnitude (MV)0.150[3]
Details
Mass1.234 ± 0.15[5] M
Radius18.79±0.38[6] R
Luminosity112.4±10.0[6] L
Surface gravity (log g)1.8 ± 0.15[5] cgs
Temperature4336±99[6] K
Metallicity [Fe/H]-0.25 ± 0.04[5] dex
Rotational velocity (v sin i)8[7] km/s
Age4.18 ± 1.95[3] Gyr
Other designations
π2 Ursae Majoris, π2 UMa, Pi2 UMa, 4 Ursae Majoris, BD+64°698, FK5 2677, GC 11850, HD 73108, HIP 42527, HR 3403, PPM 16713, SAO 14616
Database references
SIMBADdata

4 Ursae Majoris (sometimes abbreviated 4 UMa) is the Flamsteed designation of a star in the northern circumpolar constellation of Ursa Major. It also bears the Bayer designation of Pi2 Ursae Majoris (Pi2 UMa, π2 Ursae Majoris, π2 UMa) and is traditionally named Muscida. With an apparent visual magnitude of +4.6,[2] this star is visible from suburban or darker skies based upon the Bortle Dark-Sky Scale. From parallax measurements made during the Hipparcos mission, this star is at a distance of 256 light-years (78 parsecs) from Earth.[1] As of 2011, one extrasolar planet has been confirmed to be orbiting the star.

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference mnras172_667 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference aaa480_1_91 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference aaa430_165 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference aaa472_2_649 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Baines2010 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference coapa239_1_1 was invoked but never defined (see the help page).

and 29 Related for: 4 Ursae Majoris information

Request time (Page generated in 0.8398 seconds.)

4 Ursae Majoris

Last Update:

4 Ursae Majoris (sometimes abbreviated 4 UMa) is the Flamsteed designation of a star in the northern circumpolar constellation of Ursa Major. It also bears...

Word Count : 811

47 Ursae Majoris

Last Update:

47 Ursae Majoris (abbreviated 47 UMa), formally named Chalawan /ˈtʃɑːləwən/, is a yellow dwarf star approximately 45.3 light-years from Earth in the constellation...

Word Count : 2213

Xi Ursae Majoris

Last Update:

(designated Xi Ursae Majoris A), has a mean apparent magnitude of +4.41. The companion star (Xi Ursae Majoris B) has an apparent magnitude of +4.87. The orbital...

Word Count : 1364

W Ursae Majoris

Last Update:

W Ursae Majoris (W UMa) is the variable star designation for a binary star system in the northern constellation of Ursa Major. It has an apparent visual...

Word Count : 794

Iota Ursae Majoris

Last Update:

Iota Ursae Majoris (ι Ursae Majoris, abbreviated Iota UMa, ι UMa), also named Talitha /ˈtælɪθə/, is a star system in the northern circumpolar constellation...

Word Count : 1013

Alioth

Last Update:

called Epsilon Ursae Majoris, is a star in the northern constellation of Ursa Major. The designation is Latinised from ε Ursae Majoris and abbreviated...

Word Count : 1339

Alkaid

Last Update:

Alkaid /ælˈkeɪd/, also called Eta Ursae Majoris (Latinised from η Ursae Majoris, abbreviated Eta UMa, η UMa), is a star in the constellation of Ursa Major...

Word Count : 1188

List of stars in Ursa Major

Last Update:

(ly) Sp. class Notes Alioth ε 77 112185 62956 12h 54m 01.63s +55° 57′ 35.4″ 1.77 −0.21 81 A0p Alioth; brown dwarf companion?; α² CVn variable Dubhe α...

Word Count : 93

Mu Ursae Majoris

Last Update:

Mu Ursae Majoris (μ Ursae Majoris, abbreviated Mu UMa, μ UMa), formally named Tania Australis /ˈteɪniə ɔːˈstreɪlɪs/, is a binary star in the constellation...

Word Count : 876

Omicron Ursae Majoris

Last Update:

Ursae Majoris, 16 Ursae Majoris, 6 Ursae Majoris, 23 Ursae Majoris, 5 Ursae Majoris and 17 Ursae Majoris. Consequently, the Chinese name for ο Ursae Majoris...

Word Count : 1418

Dubhe

Last Update:

Dubhe /ˈdʌbiː/, also called Alpha Ursae Majoris, Latinised from α Ursae Majoris, is, despite being designated "α" (alpha), the second-brightest object...

Word Count : 1260

Megrez

Last Update:

Megrez /ˈmiːɡrɛz/, also called Delta Ursae Majoris (δ Ursae Majoris, abbreviated Delta UMa, δ UMa), is a star in the northern constellation of Ursa Major...

Word Count : 1027

Pi Ursae Majoris

Last Update:

Ursae Majoris (π UMa, π Ursae Majoris) is shared by two stars in the constellation Ursa Major: Pi¹ Ursae Majoris (3 Ursae Majoris) Pi² Ursae Majoris (4...

Word Count : 138

Kappa Ursae Majoris

Last Update:

Kappa Ursae Majoris (κ Ursae Majoris, abbreviated Kappa UMa, κ UMa) is a binary star in the constellation of Ursa Major. With a combined apparent magnitude...

Word Count : 801

Mizar

Last Update:

constellation of Ursa Major. It has the Bayer designation ζ Ursae Majoris (Latinised as Zeta Ursae Majoris). It forms a well-known naked eye double star with the...

Word Count : 2170

Lambda Ursae Majoris

Last Update:

Lambda Ursae Majoris (λ Ursae Majoris, abbreviated Lambda UMa, λ UMa), formally named Tania Borealis /ˈteɪniə ˌbɒriˈælɪs/, is a star in the northern circumpolar...

Word Count : 867

Theta Ursae Majoris

Last Update:

Theta Ursae Majoris (Theta UMa, θ Ursae Majoris, θ UMa) is a suspected spectroscopic binary star system in the northern circumpolar constellation of Ursa...

Word Count : 1054

Phecda

Last Update:

The star Beta Ursae Majoris is separated from Gamma Ursae Majoris by 11.0 ly (3.4 pc). γ Ursae Majoris (Latinised to Gamma Ursae Majoris) is the star's...

Word Count : 1237

61 Ursae Majoris

Last Update:

61 Ursae Majoris, abbreviated 61 UMa, is a single star in the northern circumpolar constellation of Ursa Major. It has a yellow-orange hue and is dimly...

Word Count : 1325

Sigma2 Ursae Majoris

Last Update:

Sigma2 Ursae Majoris (σ2 Ursae Majoris, σ2 UMa) is a binary star in the constellation of Ursa Major. Parallax measurements made by the Hipparcos spacecraft...

Word Count : 636

84 Ursae Majoris

Last Update:

84 Ursae Majoris, also known as HD 120198, is a star about 300 light years from the Earth, in the constellation Ursa Major. It is a 5th magnitude star...

Word Count : 821

TX Ursae Majoris

Last Update:

TX Ursae Majoris is an eclipsing binary star system in the northern circumpolar constellation of Ursa Major. With a combined apparent visual magnitude...

Word Count : 1392

SU Ursae Majoris

Last Update:

SU Ursae Majoris, or SU UMa, is a close binary star in the northern circumpolar constellation of Ursa Major. It is a periodic cataclysmic variable that...

Word Count : 869

Dwarf nova

Last Update:

"super-outbursts," in addition to normal outbursts. Varieties of SU Ursae Majoris star include ER Ursae Majoris stars and WZ Sagittae stars (UGWZ). Z Camelopardalis...

Word Count : 701

Chi Ursae Majoris

Last Update:

Chi Ursae Majoris or χ Ursae Majoris, formally named Taiyangshou /ˌtaɪˌjæŋˈʃoʊ/, is a single star in the northern circumpolar constellation of Ursa Major...

Word Count : 708

24 Ursae Majoris

Last Update:

has the variable star designation DK Ursae Majoris and the Bayer designation d Ursae Majoris; 24 Ursae Majoris is the Flamsteed designation. This object...

Word Count : 821

W Ursae Majoris variable

Last Update:

A W Ursae Majoris variable, also known as a low mass contact binary, is a type of eclipsing binary variable star. These stars are close binaries of spectral...

Word Count : 482

Ursa Major

Last Update:

"Little Dipper". Two of its stars, named Dubhe and Merak (α Ursae Majoris and β Ursae Majoris), can be used as the navigational pointer towards the place...

Word Count : 4777

ER Ursae Majoris

Last Update:

ER Ursae Majoris is a variable star in the northern circumpolar constellation of Ursa Major, abbreviated ER UMa. It is a prototype system for a subclass...

Word Count : 1037

PDF Search Engine © AllGlobal.net