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Asteroid 20 Massalia

Available Resources

Asteroid 20 Massalia Sky Charts and Coordinates

This is a simplified sky chart, showing where Asteroid 20 Massalia is now with respect to the brightest stars and constellations. More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Asteroid 20 Massalia in Aquarius on January, 20 2017
High Precision Live Sky Chart
22h 24m 29s
-09° 34’ 59”
11.73
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Asteroid 20 Massalia Rise and Set Times

Today's Asteroid 20 Massalia rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 99.6°
Max altitude: 28.9°
Azimuth: 260.4°

Asteroid 20 Massalia Orbit Diagram

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!

Orbit Diagram of Asteroid 20 Massalia
View Asteroid 20 Massalia in the 3D Solar System Simulator

Asteroid 20 Massalia 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.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Jan 13 11.75 22h 13m 17s -10° 37’ 40” Aquarius
2017 Jan 14 11.75 22h 14m 52s -10° 28’ 53” Aquarius
2017 Jan 15 11.75 22h 16m 27s -10° 20’ 03” Aquarius
2017 Jan 16 11.74 22h 18m 03s -10° 11’ 08” Aquarius
2017 Jan 17 11.74 22h 19m 40s -10° 02’ 12” Aquarius
2017 Jan 18 11.74 22h 21m 16s -09° 53’ 11” Aquarius
2017 Jan 19 11.74 22h 22m 53s -09° 44’ 07” Aquarius
2017 Jan 20 11.73 22h 24m 29s -09° 34’ 59” Aquarius
2017 Jan 21 11.73 22h 26m 07s -09° 25’ 47” Aquarius
2017 Jan 22 11.73 22h 27m 43s -09° 16’ 32” Aquarius
2017 Jan 23 11.72 22h 29m 21s -09° 07’ 14” Aquarius
2017 Jan 24 11.72 22h 30m 59s -08° 57’ 53” Aquarius
2017 Jan 25 11.71 22h 32m 36s -08° 48’ 29” Aquarius
2017 Jan 26 11.71 22h 34m 14s -08° 39’ 01” Aquarius

Distance of Asteroid 20 Massalia from Earth

The following chart shows the distance of Asteroid 20 Massalia from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval. The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 20 Massalia is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Asteroid 20 Massalia from Earth between January 2013 and January 2030

Light Curve of Asteroid 20 Massalia

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.

Predicted magnitude of Asteroid 20 Massalia between January 2013 and January 2030

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
Diameter 145.5 km 0.0114
Sideral Rotation 8.0980 hours 0.3383
Absolute Magnitude 6.5
Geometric Albedo 0.2096

Asteroid 20 Massalia Orbital Elements

The following table lists the orbital elements of Asteroid 20 Massalia at epoch 30 July 2016 00:00 UTC (JD: 2457600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.14255142
Orbit inclination i 0.70839371°
Perihelion distance q 2.06553042 AU
308,998,954 km
Aphelion distance Q 2.75232216 AU
411,741,535 km
Semi-major axis a 2.40892629 AU
360,370,245 km
Orbital period period 3.7400 years
1,365.6320 days
Date of perihelion transit Tp 2018-Feb-03 18:55:56
2,458,153.2889 JD
Argument of perihelion peri 256.59813486134°
Longitude of the ascending node node 206.11648345501°
Mean anomaly M 214.27700680183°
Mean motion n 0.26361420°/day
Closest approach to Earth* 2017-Dec-19
Distance of closest approach* 1.09326924 AU
163,550,750 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2030-Jan-01, with a sampling interval of 1 day.