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Asteroid 17 Thetis

Available Resources

Asteroid 17 Thetis Sky Charts and Coordinates

This is a simplified sky chart, showing where Asteroid 17 Thetis 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 17 Thetis in Leo on September, 25 2018
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]
10h 07m 15s
+12° 31’ 26”

Asteroid 17 Thetis Rise and Set Times

Today's Asteroid 17 Thetis rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 77.4°
Max altitude: 51.0°
Azimuth: 282.5°

Asteroid 17 Thetis Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 17 Thetis with respect of the Sun and the orbits of the major planets. The position of Asteroid 17 Thetis 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 17 Thetis
View Asteroid 17 Thetis in the 3D Solar System Simulator

Asteroid 17 Thetis Ephemeris

The following table lists the ephemerides of Asteroid 17 Thetis computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 17 Thetis in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Sep 18 09h 55m 24s +13° 26’ 53” 13.23 Leo
2018 Sep 19 09h 57m 02s +13° 19’ 24” 13.23 Leo
2018 Sep 20 09h 58m 40s +13° 11’ 53” 13.23 Leo
2018 Sep 21 10h 00m 16s +13° 04’ 20” 13.23 Leo
2018 Sep 22 10h 01m 54s +12° 56’ 48” 13.24 Leo
2018 Sep 23 10h 03m 30s +12° 49’ 13” 13.24 Leo
2018 Sep 24 10h 05m 08s +12° 41’ 36” 13.24 Leo
2018 Sep 25 10h 06m 43s +12° 34’ 00” 13.24 Leo
2018 Sep 26 10h 08m 20s +12° 26’ 21” 13.24 Leo
2018 Sep 27 10h 09m 56s +12° 18’ 42” 13.24 Leo
2018 Sep 28 10h 11m 31s +12° 11’ 00” 13.24 Leo
2018 Sep 29 10h 13m 08s +12° 03’ 20” 13.24 Leo
2018 Sep 30 10h 14m 44s +11° 55’ 37” 13.24 Leo
2018 Oct 01 10h 16m 18s +11° 47’ 54” 13.24 Leo

Distance of Asteroid 17 Thetis from Earth

The following chart shows the distance of Asteroid 17 Thetis 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 17 Thetis is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Asteroid 17 Thetis from Earth between January 2013 and December 2075

Light Curve of Asteroid 17 Thetis

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 17 Thetis, 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 17 Thetis between January 2013 and December 2075

Asteroid 17 Thetis Physical Data

The following shows the known values of the most important physical parameters of Asteroid 17 Thetis. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 90.04 km 0.0071
Sideral Rotation 12.2705 hours 0.5127
Absolute Magnitude 7.76
Geometric Albedo 0.1715

Asteroid 17 Thetis Orbital Elements

The following table lists the orbital elements of Asteroid 17 Thetis at epoch 22 March 2018 00:00 UTC (JD: 2458200.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.13279018
Orbit inclination i 5.59066005°
Perihelion distance q 2.14269447 AU
320,542,530 km
Aphelion distance Q 2.79888813 AU
418,707,706 km
Semi-major axis a 2.47079130 AU
369,625,118 km
Orbital period period 3.8800 years
1,418.5757 days
Date of perihelion transit Tp 2019-Dec-06 01:18:00
2,458,823.5542 JD
Argument of perihelion peri 136.14643176429°
Longitude of the ascending node node 125.55329958453°
Mean anomaly M 201.88401192455°
Mean motion n 0.25377567°/day
Closest approach to Earth* 2035-Jun-10
Distance of closest approach* 1.13909761 AU
170,406,578 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.