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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 Scorpius on April, 21 2019
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
16h 13m 12s
-20° 41’ 09”

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 Europe/London timezone.

Azimuth: 110.7°
Max altitude: 17.8°
Azimuth: 249.3°

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 Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Apr 14 16h 16m 54s -20° 53’ 04” 10.53 Scorpius
2019 Apr 15 16h 16m 29s -20° 51’ 42” 10.51 Scorpius
2019 Apr 16 16h 16m 04s -20° 50’ 16” 10.49 Scorpius
2019 Apr 17 16h 15m 36s -20° 48’ 43” 10.47 Scorpius
2019 Apr 18 16h 15m 06s -20° 47’ 08” 10.45 Scorpius
2019 Apr 19 16h 14m 34s -20° 45’ 28” 10.43 Scorpius
2019 Apr 20 16h 14m 00s -20° 43’ 42” 10.41 Scorpius
2019 Apr 21 16h 13m 26s -20° 41’ 53” 10.39 Scorpius
2019 Apr 22 16h 12m 50s -20° 40’ 00” 10.37 Scorpius
2019 Apr 23 16h 12m 11s -20° 38’ 00” 10.36 Scorpius
2019 Apr 24 16h 11m 32s -20° 35’ 57” 10.34 Scorpius
2019 Apr 25 16h 10m 51s -20° 33’ 51” 10.32 Scorpius
2019 Apr 26 16h 10m 09s -20° 31’ 40” 10.30 Scorpius
2019 Apr 27 16h 09m 25s -20° 29’ 23” 10.28 Scorpius

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 December 2100

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 December 2100

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 26 April 2019 00:00 UTC (JD: 2458600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.14206668
Orbit inclination i 0.70875101°
Perihelion distance q 2.06743208 AU
309,283,438 km
Aphelion distance Q 2.75213149 AU
411,713,012 km
Semi-major axis a 2.40978179 AU
360,498,225 km
Orbital period period 3.7400 years
1,366.3596 days
Date of perihelion transit Tp 2018-Feb-04 07:04:35
2,458,153.7949 JD
Next perihelion transit 2021-Nov-01 15:42
2,459,520.1544 JD
Argument of perihelion peri 256.77331237758°
Longitude of the ascending node node 206.10880742914°
Mean anomaly M 117.69511849175°
Mean motion n 0.26347384°/day
Closest approach to Earth* 2048-Jan-06
Distance of closest approach* 1.07706230 AU
161,126,227 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2100-Dec-31, with a sampling interval of 1 day.