Your web-browser is very outdated, and as such, this website may not display properly. Please consider upgrading to a modern, faster and more secure browser. Click here to do so.

Wanderlust

I am a 22 year old space and science enthusiast. Terrestrial tectonics, exoplanets, stars, interstellar voids, spacecraft, you name it. I love it.

Posts tagged cosmos

Jan 5 '13
Groombridge 1618
The star Groombridge 1618 is an orange dwarf star of the spectral type K5V. The star is estimated to be a billion years old and is located 16 light-years from Sol. Groombridge 1618 is smaller and dimmer than the sun being only 60% as massive and currently 13% as luminous. The habitable zone of this star is estimated to be between 0.3 AU to 0.6 astronomical units. A yet unconfirmed planet is believed to be orbiting in the middle of this zone at 0.4 AU. However, the planet is estimated to be around 4 Jupiter masses. The remaining lifetime of this star is 40 billion years.
Just to clarify, 40 billion years. That is 4 times as old as Earth will ever be. This star still will continue shining happily 35 billion years after Earth is reduced to nothing. I love it, this humble little star shows us how deep the chasm of time really is and how small we fit into it. But take comfort in the knowledge that we do fit. It may be a little fit, but its enough to catch a glimpse of what truly was, is and may be.

Groombridge 1618

The star Groombridge 1618 is an orange dwarf star of the spectral type K5V. The star is estimated to be a billion years old and is located 16 light-years from Sol. Groombridge 1618 is smaller and dimmer than the sun being only 60% as massive and currently 13% as luminous. The habitable zone of this star is estimated to be between 0.3 AU to 0.6 astronomical units. A yet unconfirmed planet is believed to be orbiting in the middle of this zone at 0.4 AU. However, the planet is estimated to be around 4 Jupiter masses. The remaining lifetime of this star is 40 billion years.

Just to clarify, 40 billion years. That is 4 times as old as Earth will ever be. This star still will continue shining happily 35 billion years after Earth is reduced to nothing. I love it, this humble little star shows us how deep the chasm of time really is and how small we fit into it. But take comfort in the knowledge that we do fit. It may be a little fit, but its enough to catch a glimpse of what truly was, is and may be.

Dec 20 '12
The Tau Ceti System

The Tau Ceti System

Dec 18 '12
A New Home by ~SMPritchard
After a decades long journey, this antimatter-catalyzed fusion rocket approaches its destination. Illuminated by the light of an alien sun, the ship begins to fall towards the inner region of the star’s planetary system, where an Earth-sized exoplanet orbits in the habitable zone.

A New Home by ~SMPritchard

After a decades long journey, this antimatter-catalyzed fusion rocket approaches its destination. Illuminated by the light of an alien sun, the ship begins to fall towards the inner region of the star’s planetary system, where an Earth-sized exoplanet orbits in the habitable zone.

Nov 4 '12
Nov 21 '11
you are never lost if you never had a home
out in the chasm, i make my way
free to wander amidst motes of dust

you are never lost if you never had a home

out in the chasm, i make my way

free to wander amidst motes of dust

Oct 16 '11
Stellar Profile: Gamma Pavonis
Star type: F6V
Distance: 30.1 Lighyears
Location in our sky: The Constellation Pavo
Apparent Magnitude: 4.22 [visible to the naked eye]
Absolute Magnitude: 4.40 [sun is 4.83]
Age Approx: 9 billion years
Mass: 0.80 sol
Radius: 1.1 sol
Luminosity: 1.5 sol
Temperature: 6,100 Kelvin
Metallicity : 0.25 sol
Radial Velocity: -30.2 km/s [moving away from us]
Habitable Zone: 1.2 AU [Ideal Distance]
Planets: None Detected as of 2011
Other Info
Gamma Pavonis is considered a metal-poor star, which means it has a low abundance of elements heavier than helium. It is also orbiting through the Milky Way at an unusually high velocity relative to nearby stars. Although it appears to have a lower mass than our Sun, it is slightly larger in diameter and has a higher temperature. The star is on the old side at 9 billion years, the main sequence may soon come to an end.

Stellar Profile: Gamma Pavonis

Star type: F6V

Distance: 30.1 Lighyears

Location in our sky: The Constellation Pavo

Apparent Magnitude: 4.22 [visible to the naked eye]

Absolute Magnitude: 4.40 [sun is 4.83]

Age Approx: 9 billion years

Mass: 0.80 sol

Radius: 1.1 sol

Luminosity: 1.5 sol

Temperature: 6,100 Kelvin

Metallicity : 0.25 sol

Radial Velocity: -30.2 km/s [moving away from us]

Habitable Zone: 1.2 AU [Ideal Distance]

Planets: None Detected as of 2011

Other Info

Gamma Pavonis is considered a metal-poor star, which means it has a low abundance of elements heavier than helium. It is also orbiting through the Milky Way at an unusually high velocity relative to nearby stars. Although it appears to have a lower mass than our Sun, it is slightly larger in diameter and has a higher temperature. The star is on the old side at 9 billion years, the main sequence may soon come to an end.

Oct 16 '11
Stellar Profile: Zeta Tucanae
Star type: F9.5V
Distance: 28 Lightyears
Apparent Magnitude: 4.23
Absolute Magnitude: 4.56
Location in our sky: The Constellation Tucana
Age Approx: 2.1 billion years
Mass: .99 sol
Radius: .90 sol
Luminosity: 1.3 sun
Temperature: 5,970 K
Metallicity : [Fe/H] = -0.07 [pretty much the same as the sun]
Radial Velocity: +8.8 km/s [moving away from sol]
Habitable Zone: 1.14 AU [Ideal Distance]
Planets: None detected as of 2011
Other Info
The composition and mass of this star are very similar to the Sun, with a slightly lower mass and an estimated age of three billion years. The solar-like qualities make it a target of interest for investigating the possible existence of a life-bearing planet.
Based upon an excess emission of infrared radiation at 70 micrometres, this system is believed to have a debris disk. The disk is orbiting the star at a minimum radius of 2.3 astronomical units. It is radiating with a maximum temperature of 218 K.

Stellar Profile: Zeta Tucanae

Star type: F9.5V

Distance: 28 Lightyears

Apparent Magnitude: 4.23

Absolute Magnitude: 4.56

Location in our sky: The Constellation Tucana

Age Approx: 2.1 billion years

Mass: .99 sol

Radius: .90 sol

Luminosity: 1.3 sun

Temperature: 5,970 K

Metallicity : [Fe/H] = -0.07 [pretty much the same as the sun]

Radial Velocity: +8.8 km/s [moving away from sol]

Habitable Zone: 1.14 AU [Ideal Distance]

Planets: None detected as of 2011

Other Info

The composition and mass of this star are very similar to the Sun, with a slightly lower mass and an estimated age of three billion years. The solar-like qualities make it a target of interest for investigating the possible existence of a life-bearing planet.

Based upon an excess emission of infrared radiation at 70 micrometres, this system is believed to have a debris disk. The disk is orbiting the star at a minimum radius of 2.3 astronomical units. It is radiating with a maximum temperature of 218 K.

Oct 16 '11
Stellar Profile: Beta Canum Cenaticorum
Star type: G0V
Distance: 27.4 Lightyears
Apparent Magnitude: 4.26 [visible to the naked eye]
Location in our sky: The Constellation Canes Venatici
Age Approx: 5.05 billion years
Mass: 1.02 sol
Radius: 1.18 sol
Luminosity: 1.15 sol
Temperature: 6,045 Kelvin
Metallicity : [Fe/H] = -0.21 [Less than Sol]
Radial Velocity: +6.9 km/s [moving away]
Habitable Zone: 1.07 AU [Ideal Distance]
Planets: None detected as of 2011
Other Info 
Solar Analogue Very much like our sun despite a lower metallicity.

Stellar Profile: Beta Canum Cenaticorum

Star type: G0V

Distance: 27.4 Lightyears

Apparent Magnitude: 4.26 [visible to the naked eye]

Location in our sky: The Constellation Canes Venatici

Age Approx: 5.05 billion years

Mass: 1.02 sol

Radius: 1.18 sol

Luminosity: 1.15 sol

Temperature: 6,045 Kelvin

Metallicity : [Fe/H] = -0.21 [Less than Sol]

Radial Velocity: +6.9 km/s [moving away]

Habitable Zone: 1.07 AU [Ideal Distance]

Planets: None detected as of 2011

Other Info 

Solar Analogue Very much like our sun despite a lower metallicity.

Oct 14 '11
Stellar Profile: HD 40307
Star type: K2.5V
Distance: 30.4
Apparent Magnitude: 7.17
Location in our sky: Constellation of Pictor
Age Approx: 6.1 billion years old
Mass: 0.77 sol
Radius: 0.71 sol
Luminosity: 0.19 sol
Temperature: 4977K [hotter than most K stars]
Metallicity : [Fe/H] -0.31 [less than sol]
Radial Velocity: +30.4 [moving away from us]
Habitable Zone: 0.43 AU
Planets: Three super earth mass planets. Planet b is 4.2 mass of the earth and .047 AU from its star. Planet c is 6.8 mass of the earth and .082 AU from its star. Planet d is 9 earth masses and .134AU from its star. All of these are well within mercury’s orbit of the sun when compared to our system. All three detected planets are inside the habitable zone of the star.
Other Info
All stars move on an independent motion around the galaxy. 413,000 years ago this star was one of the closest stars to the solar system, within 6 lightyears sol. Now orbital movements of both stars have separated them by 45 lightyears. It has a radial velocity of 30km/s, which means its moving away from us at 30 kilometers a second.

Stellar Profile: HD 40307

Star type: K2.5V

Distance: 30.4

Apparent Magnitude: 7.17

Location in our sky: Constellation of Pictor

Age Approx: 6.1 billion years old

Mass: 0.77 sol

Radius: 0.71 sol

Luminosity: 0.19 sol

Temperature: 4977K [hotter than most K stars]

Metallicity : [Fe/H] -0.31 [less than sol]

Radial Velocity: +30.4 [moving away from us]

Habitable Zone: 0.43 AU

Planets: Three super earth mass planets. Planet b is 4.2 mass of the earth and .047 AU from its star. Planet c is 6.8 mass of the earth and .082 AU from its star. Planet d is 9 earth masses and .134AU from its star. All of these are well within mercury’s orbit of the sun when compared to our system. All three detected planets are inside the habitable zone of the star.

Other Info

All stars move on an independent motion around the galaxy. 413,000 years ago this star was one of the closest stars to the solar system, within 6 lightyears sol. Now orbital movements of both stars have separated them by 45 lightyears. It has a radial velocity of 30km/s, which means its moving away from us at 30 kilometers a second.

Oct 14 '11
Stellar Profile: 66 G. Centauri or HD 102356
Star type: G2V
Distance: 30.13 Lightyears
Apparent Magnitude: 4.88 [visible to the naked eye]
Location in our sky: The constellation Centaurus
Age Approx: 7 to 9 billion years old
Mass: 0.88 sun
Radius: 0.96 sun
Luminosity: 0.85 sun
Temperature: 5,643 sun
Metallicity : -0.28 [Fe/H] [less than sun]
Radial Velocity: +15.3km/s [moving away from us at this speed]
Habitable Zone: Inner limit (0.75AU), Ideal Distance (.92AU), Outer Limit (1.1AU)
Planets: One Neptune sized world 15 times the mass of the earth with an orbit of 0.46 AU and an orbital period of 120 days. The planet has a very eccentric orbit that takes it from . 3 AU to .6 AU. It is outside the habitable zone, being a little too close to the star. Radial velocity indicates that this is the largest planet in the system within 5 AU.This still leaves the possibility of smaller planets, even in the habitable zone.
Other Info
This star has a fairly dim Red Dwarf companion in a wide orbit of 235 AU. This is six times further out than Pluto is from the sun. The binary companion orbits the star in 3,823 years.

Stellar Profile: 66 G. Centauri or HD 102356

Star type: G2V

Distance: 30.13 Lightyears

Apparent Magnitude: 4.88 [visible to the naked eye]

Location in our sky: The constellation Centaurus

Age Approx: 7 to 9 billion years old

Mass: 0.88 sun

Radius: 0.96 sun

Luminosity: 0.85 sun

Temperature: 5,643 sun

Metallicity : -0.28 [Fe/H] [less than sun]

Radial Velocity: +15.3km/s [moving away from us at this speed]

Habitable Zone: Inner limit (0.75AU), Ideal Distance (.92AU), Outer Limit (1.1AU)

Planets: One Neptune sized world 15 times the mass of the earth with an orbit of 0.46 AU and an orbital period of 120 days. The planet has a very eccentric orbit that takes it from . 3 AU to .6 AU. It is outside the habitable zone, being a little too close to the star. Radial velocity indicates that this is the largest planet in the system within 5 AU.This still leaves the possibility of smaller planets, even in the habitable zone.

Other Info

This star has a fairly dim Red Dwarf companion in a wide orbit of 235 AU. This is six times further out than Pluto is from the sun. The binary companion orbits the star in 3,823 years.