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Comet 9P/Tempel 1

Available Resources

Comet 9P/Tempel 1 Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 9P/Tempel 1 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.

Comet 9P/Tempel 1 in Cetus on January, 22 2018
High Precision Live Sky Chart
01h 15m 47s
+01° 24’ 34”
20.92
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Comet 9P/Tempel 1 Rise and Set Times

Today's Comet 9P/Tempel 1 rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 88.6°
Max altitude: 39.9°
Azimuth: 271.4°

Comet 9P/Tempel 1 Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 9P/Tempel 1 with respect of the Sun and the orbits of the major planets. The position of Comet 9P/Tempel 1 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 Comet 9P/Tempel 1
View Comet 9P/Tempel 1 in the 3D Solar System Simulator

Comet 9P/Tempel 1 Ephemeris

The following table lists the ephemerides of Comet 9P/Tempel 1 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 9P/Tempel 1 in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Jan 15 20.83 01h 12m 20s +00° 46’ 08” Cetus
2018 Jan 16 20.84 01h 12m 47s +00° 51’ 29” Cetus
2018 Jan 17 20.85 01h 13m 15s +00° 56’ 54” Cetus
2018 Jan 18 20.87 01h 13m 45s +01° 02’ 21” Cetus
2018 Jan 19 20.88 01h 14m 15s +01° 07’ 51” Cetus
2018 Jan 20 20.89 01h 14m 44s +01° 13’ 23” Cetus
2018 Jan 21 20.91 01h 15m 15s +01° 18’ 57” Cetus
2018 Jan 22 20.92 01h 15m 47s +01° 24’ 34” Cetus
2018 Jan 23 20.93 01h 16m 19s +01° 30’ 14” Cetus
2018 Jan 24 20.95 01h 16m 53s +01° 35’ 54” Cetus
2018 Jan 25 20.96 01h 17m 26s +01° 41’ 38” Cetus
2018 Jan 26 20.97 01h 18m 01s +01° 47’ 22” Cetus
2018 Jan 27 20.98 01h 18m 34s +01° 53’ 08” Cetus
2018 Jan 28 21.00 01h 19m 10s +01° 58’ 58” Cetus

Distance of Comet 9P/Tempel 1 from Earth

The following chart shows the distance of Comet 9P/Tempel 1 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 9P/Tempel 1 is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 9P/Tempel 1 from Earth between January 2013 and December 2075

Light Curve of Comet 9P/Tempel 1

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 9P/Tempel 1, 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 Comet 9P/Tempel 1 between January 2013 and December 2075

Comet 9P/Tempel 1 Orbital Elements

The following table lists the orbital elements of Comet 9P/Tempel 1 at epoch 10 May 2016 00:00 UTC (JD: 2457519.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.50964598
Orbit inclination i 10.47374985°
Perihelion distance q 1.54255281 AU
230,762,617 km
Aphelion distance Q 4.74903552 AU
710,445,603 km
Semi-major axis a 3.14579417 AU
470,604,110 km
Orbital period period 5.5800 years
2,037.9517 days
Date of perihelion transit Tp 2016-Aug-02 13:49:36
2,457,603.0761 JD
Next perihelion transit 2022-Mar-02 12:40
2,459,641.0278 JD
Argument of perihelion peri 179.20203243°
Longitude of the ascending node node 68.750139039454°
Mean anomaly M 345.23644948366°
Mean motion n 0.17664796°/day
Closest approach to Earth* 2040-Jun-16
Distance of closest approach* 0.94602055 AU
141,522,660 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.