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'''Yonmara''' (186 G. Sagittarii) is a solitary, blue-hued star in the zodiac constellation of Sagittarius. It has an apparent visual magnitude of +5.64, which is bright enough to be faintly visible to the naked eye. According to the Bortle scale, it can be viewed from dark suburban skies. Based upon an annual parallax shift of 14.0013 mas as seen from Earth, this star is located around 233 light years from Sol. It is moving away from Sol with a radial velocity of 1.40 km/s.
'''Yonmara''' (186 G. Sagittarii) is a solitary, blue-hued star in the zodiac constellation of Sagittarius. It has an apparent visual magnitude of +5.64, which is bright enough to be faintly visible to the naked eye. According to the Bortle scale, it can be viewed from dark suburban skies. Based upon an annual parallax shift of 14.0013 mas as seen from Earth, this star is located around 233 light years from Sol. It is moving away from Sol with a radial velocity of 1.40 km/s.


This is an B-type main sequence star with a stellar classification of B8.5V. The star is about 1.7 times the [[mass of the Sun]] and 1.9 times the Sun's radius. The star is about 107 million years old and is spinning rapidly with a projected rotational velocity of 277 km/s. It has an a debris disk orbiting the star at a radius of 47 AU with a mean temperature of 90 K.
This is an B-type main sequence star with a stellar classification of B8.5V. The star is about 1.7 times the [[mass of the Sun]] and 1.9 times the Sun's radius. The star is about 107 million years old and is spinning rapidly with a projected rotational velocity of 277 km/s. It has a [https://en.wikipedia.org/wiki/Debris_disk debris disk] orbiting the star at a radius of 47 AU with a mean temperature of 90 K.


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Revision as of 14:41, 17 November 2021

Location of Yonmara (circled)
Location of Yonmara (circled)

Yonmara (186 G. Sagittarii) is a solitary, blue-hued star in the zodiac constellation of Sagittarius. It has an apparent visual magnitude of +5.64, which is bright enough to be faintly visible to the naked eye. According to the Bortle scale, it can be viewed from dark suburban skies. Based upon an annual parallax shift of 14.0013 mas as seen from Earth, this star is located around 233 light years from Sol. It is moving away from Sol with a radial velocity of 1.40 km/s.

This is an B-type main sequence star with a stellar classification of B8.5V. The star is about 1.7 times the mass of the Sun and 1.9 times the Sun's radius. The star is about 107 million years old and is spinning rapidly with a projected rotational velocity of 277 km/s. It has a debris disk orbiting the star at a radius of 47 AU with a mean temperature of 90 K.

Yonmara
Discovery
Discovered by: Capt. Ruben Evans
Discovery date: February 16, 2218
Observation data
Location from Sol: RA 19h 26m 26.4821s
Dec -29ΒΊ 44' 35.611"
Distance from Sol: 225.4091223 LY
Apparent Magnitude: 5.68
Absolute Magnitude: 1.48
Spectral Class: B9V
Physical characteristics
Diameter: 2.6 million km (1.9x Sol)
Mass: 3.4x1030 kg (1.7x Sol)


View of Yonmara from Sol

This view represents a small fraction of the sky viewed from Earth in J2000.

Further data can be obtained from these sources...

http://aladin.u-strasbg.fr/aladin.gml


Yonmaran Neighboring Systems

The Yonmaran star has many different identifiers depending on the star catalog...










HD 182681 CD-29 16140 CPD-29 6051 FK5 731
GC 26833 GCRV 11872 HIP 95619 HR 7380
N30 4306 PMC 90-93 520 PPM 269791 SAO 188127
SKY# 36210 SRS 30731 TD1 24644 TYC 6888-2982-1
UBV 16456 UBV M 23755 uvby98 100182681 YZ 119 12715
HIC 95619 GEN#+1.00182681 GSC 06888-02982


Sol Neighboring Systems