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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 Aries on April, 23 2018
High Precision Live Sky Chart
02h 30m 47s
+10° 32’ 50”
21.70
 = 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: 79.5°
Max altitude: 49.1°
Azimuth: 280.5°

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 Apr 16 21.67 02h 24m 02s +09° 53’ 47” Cetus
2018 Apr 17 21.67 02h 25m 00s +09° 59’ 26” Cetus
2018 Apr 18 21.68 02h 25m 57s +10° 05’ 03” Cetus
2018 Apr 19 21.68 02h 26m 54s +10° 10’ 41” Cetus
2018 Apr 20 21.69 02h 27m 52s +10° 16’ 15” Cetus
2018 Apr 21 21.69 02h 28m 50s +10° 21’ 48” Cetus
2018 Apr 22 21.70 02h 29m 48s +10° 27’ 20” Cetus
2018 Apr 23 21.70 02h 30m 47s +10° 32’ 50” Aries
2018 Apr 24 21.71 02h 31m 45s +10° 38’ 20” Aries
2018 Apr 25 21.71 02h 32m 43s +10° 43’ 46” Aries
2018 Apr 26 21.71 02h 33m 41s +10° 49’ 12” Aries
2018 Apr 27 21.72 02h 34m 39s +10° 54’ 34” Aries
2018 Apr 28 21.72 02h 35m 36s +10° 59’ 57” Aries
2018 Apr 29 21.72 02h 36m 34s +11° 05’ 17” Aries

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.