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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 Cetus on April, 27 2017
High Precision Live Sky Chart
02h 10m 18s
+08° 50’ 25”
 = 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 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 local timezone Europe/London.

Azimuth: 81.2°
Max altitude: 47.4°
Azimuth: 278.8°

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 MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Apr 20 12.89 01h 58m 56s +07° 49’ 55” Pisces
2017 Apr 21 12.89 02h 00m 33s +07° 58’ 44” Pisces
2017 Apr 22 12.89 02h 02m 11s +08° 07’ 27” Pisces
2017 Apr 23 12.90 02h 03m 48s +08° 16’ 09” Pisces
2017 Apr 24 12.90 02h 05m 26s +08° 24’ 47” Pisces
2017 Apr 25 12.91 02h 07m 04s +08° 33’ 23” Cetus
2017 Apr 26 12.92 02h 08m 40s +08° 41’ 54” Cetus
2017 Apr 27 12.93 02h 10m 18s +08° 50’ 25” Cetus
2017 Apr 28 12.94 02h 11m 56s +08° 58’ 50” Cetus
2017 Apr 29 12.96 02h 13m 32s +09° 07’ 14” Cetus
2017 Apr 30 12.97 02h 15m 11s +09° 15’ 33” Cetus
2017 May 01 12.98 02h 16m 47s +09° 23’ 51” Cetus
2017 May 02 12.99 02h 18m 25s +09° 32’ 04” Cetus
2017 May 03 13.00 02h 20m 03s +09° 40’ 14” Cetus

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 January 2030

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 January 2030

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 30 July 2016 00:00 UTC (JD: 2457600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.13246905
Orbit inclination i 5.59050319°
Perihelion distance q 2.14366251 AU
320,687,347 km
Aphelion distance Q 2.79832260 AU
418,623,103 km
Semi-major axis a 2.47099255 AU
369,655,225 km
Orbital period period 3.8800 years
1,418.7490 days
Date of perihelion transit Tp 2016-Jan-17 00:55:08
2,457,404.5383 JD
Next perihelion transit 2019-Dec-05 18:53
2,458,823.2873 JD
Argument of perihelion peri 136.07832395165°
Longitude of the ascending node node 125.56628804699°
Mean anomaly M 49.724236925869°
Mean motion n 0.25374466°/day
Closest approach to Earth* 2027-May-03
Distance of closest approach* 1.22408073 AU
183,119,871 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.