Asteroid 20 Massalia
Asteroid 20 Massalia was discovered by astronomer Annibale de Gasparis on September 19, 1852. It is named after the ancient Greek city of Massalia, which is now modern-day Marseille, France. Massalia is a relatively large and bright asteroid, with a diameter of about 146 kilometers. It is classified as an S-type asteroid, meaning that it is composed primarily of silicate rock and metal. Massalia has a relatively short rotation period of just over 6 hours and orbits the Sun every 4.3 years at an average distance of 2.41 astronomical units (AU).
The current Right Ascension of Asteroid 20 Massalia is 19h 16m 40s and the Declination is -21° 42’ 37” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom ). The current magnitude of Asteroid 20 Massalia is 12.14 (JPL).
- 20 Massalia is below the horizon from Greenwich, United Kingdom .
- Given its current magnitude, 20 Massalia is visible with the help of a telescope having an aperture of 4 inches (100mm) or more.
- Go to interactive sky chart
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Asteroid 20 Massalia Position and Finder Charts
Below we provide Asteroid 20 Massalia finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.
Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 20 Massalia is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Asteroid 20 Massalia?, a page that provides all the information needed to find Asteroid 20 Massalia in the sky and additional links to sky charts.
Asteroid 20 Massalia Distance from Earth
The distance of Asteroid 20 Massalia from Earth is currently 522,857,667 kilometers, equivalent to 3.495088 Astronomical Units. Light takes 29 minutes and 4.0654 seconds to travel from Asteroid 20 Massalia and arrive to us.
The following chart shows the distance of Asteroid 20 Massalia from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 20 Massalia from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach of Asteroid 20 Massalia to Earth
Between 1 January 1900 and 31 December 2099, the closest approach of Asteroid 20 Massalia to Earth happens on Mon Jan 6 2048 at a distance of 1.077062 Astronomical Units, or 161,126,212 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Asteroid 20 Massalia Brightness and Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 20 Massalia, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Asteroid 20 Massalia Orbital Elements
|Perihelion distance||q||2.06345443 AU
|Date of perihelion transit||Tp||2021-Nov-04 02:43:02
|Next perihelion transit||2025-Jul-31 10:42
|Argument of perihelion||peri||257.50682680841°|
|Longitude of the ascending node||node||205.9677482734°|
Visualization of Asteroid 20 Massalia Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 20 Massalia with respect of the Sun and the orbits of the major planets. The position of Asteroid 20 Massalia and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!
Asteroid 20 Massalia Physical Data
The following shows the known values of the most important physical parameters of Asteroid 20 Massalia. Source: JPL Small-Body Database
|Physical Parameter||Value||Relative to Earth|
|Sideral Rotation||8.0980 hours||0.3383|
Asteroid 20 Massalia 15 Days Ephemeris
The following table lists the ephemerides of Asteroid 20 Massalia computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 20 Massalia in our Online Planetarium at the chosen date.
|2023 Nov 29||19h 04m 27s||-22° 02’ 35”||12.15||Sagittarius|
|2023 Nov 30||19h 06m 06s||-22° 00’ 06”||12.15||Sagittarius|
|2023 Dec 01||19h 07m 45s||-21° 57’ 33”||12.15||Sagittarius|
|2023 Dec 02||19h 09m 24s||-21° 54’ 56”||12.15||Sagittarius|
|2023 Dec 03||19h 11m 03s||-21° 52’ 14”||12.14||Sagittarius|
|2023 Dec 04||19h 12m 42s||-21° 49’ 27”||12.14||Sagittarius|
|2023 Dec 05||19h 14m 22s||-21° 46’ 36”||12.14||Sagittarius|
|2023 Dec 06||19h 16m 02s||-21° 43’ 41”||12.14||Sagittarius|
|2023 Dec 07||19h 17m 44s||-21° 40’ 41”||12.14||Sagittarius|
|2023 Dec 08||19h 19m 23s||-21° 37’ 36”||12.13||Sagittarius|
|2023 Dec 09||19h 21m 05s||-21° 34’ 27”||12.13||Sagittarius|
|2023 Dec 10||19h 22m 45s||-21° 31’ 14”||12.13||Sagittarius|
|2023 Dec 11||19h 24m 26s||-21° 27’ 56”||12.13||Sagittarius|
|2023 Dec 12||19h 26m 08s||-21° 24’ 34”||12.12||Sagittarius|