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Comet 55P/Tempel-Tuttle

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Comet 55P/Tempel-Tuttle Position

Comet 55P/Tempel-Tuttle is currently in the constellation of Libra. The current Right Ascension is 15h 24m 32s and the Declination is -18° 56’ 51”.

15h 24m 32s
-18° 56’ 51”

Simplified sky chart showing where Comet 55P/Tempel-Tuttle is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet 55P/Tempel-Tuttle in Libra on September, 15 2019
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Hihgher precision deep sky finder chart showing where Comet 55P/Tempel-Tuttle is right now (view fullscreen)

RA: 15h 24m 32s
Dec: -18° 56’ 51”
Deep sky finder chart for Comet 55P/Tempel-Tuttle
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 55P/Tempel-Tuttle?, a page that provides all the information needed to find Comet 55P/Tempel-Tuttle in the sky and additional links to sky charts.

Comet 55P/Tempel-Tuttle Distance

The distance of Comet 55P/Tempel-Tuttle from Earth is currently 2,847,014,681 kilometers, equivalent to 19.031118 Astronomical Units. Light takes 2 hours, 38 minutes and 16.6188 seconds to travel from Comet 55P/Tempel-Tuttle and arrive to us.

2 hours, 38 minutes and 16.6188 seconds

The following chart shows the distance of Comet 55P/Tempel-Tuttle from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Comet 55P/Tempel-Tuttle from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 55P/Tempel-Tuttle from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 55P/Tempel-Tuttle to Earth

Between January 2013 and December 2100 the closest approach of Comet 55P/Tempel-Tuttle to Earth happens on Sun Jan 25 2065 at a distance of 0.40427035 Astronomical Units, or 60,477,984 kilometers:

Sun Jan 25 2065

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet 55P/Tempel-Tuttle brightness

The current visual magnitude of Comet 55P/Tempel-Tuttle is 48.12.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behvior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 55P/Tempel-Tuttle, 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 55P/Tempel-Tuttle between January 2013 and December 2100

Comet 55P/Tempel-Tuttle rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet 55P/Tempel-Tuttle rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.9°
Max altitude: 19.6°
Azimuth: 251.1°
Comet 55P/Tempel-Tuttle is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet 55P/Tempel-Tuttle touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 55P/Tempel-Tuttle Orbital Elements

The following table lists the orbital elements of Comet 55P/Tempel-Tuttle at epoch 14 August 1998 00:00 UTC (JD: 2451040.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.90555272
Orbit inclination i 162.48657538°
Perihelion distance q 0.97642792 AU
146,071,537 km
Aphelion distance Q 19.70024854 AU
2,947,115,240 km
Semi-major axis a 10.33833823 AU
1,546,593,389 km
Orbital period period 33.2400 years
12,141.5612 days
Date of perihelion transit Tp 1998-Feb-28 02:20:44
2,450,872.5977 JD
Next perihelion transit 2031-May-27 15:48
2,463,014.1589 JD
Argument of perihelion peri 172.50027368281°
Longitude of the ascending node node 235.27098914908°
Mean anomaly M 4.9783396846882°
Mean motion n 0.02965022°/day

Visualization of Comet 55P/Tempel-Tuttle Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 55P/Tempel-Tuttle with respect of the Sun and the orbits of the major planets. The position of Comet 55P/Tempel-Tuttle 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 55P/Tempel-Tuttle
View Comet 55P/Tempel-Tuttle in the 3D Solar System Simulator

Comet 55P/Tempel-Tuttle 15 Days Ephemeris

The following table lists the ephemerides of Comet 55P/Tempel-Tuttle computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 55P/Tempel-Tuttle in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Sep 08 15h 23m 57s -18° 55’ 20” 48.11 Libra
2019 Sep 09 15h 24m 01s -18° 55’ 30” 48.11 Libra
2019 Sep 10 15h 24m 05s -18° 55’ 41” 48.11 Libra
2019 Sep 11 15h 24m 10s -18° 55’ 51” 48.11 Libra
2019 Sep 12 15h 24m 14s -18° 56’ 03” 48.12 Libra
2019 Sep 13 15h 24m 19s -18° 56’ 16” 48.12 Libra
2019 Sep 14 15h 24m 24s -18° 56’ 29” 48.12 Libra
2019 Sep 15 15h 24m 29s -18° 56’ 43” 48.12 Libra
2019 Sep 16 15h 24m 34s -18° 56’ 57” 48.12 Libra
2019 Sep 17 15h 24m 39s -18° 57’ 12” 48.12 Libra
2019 Sep 18 15h 24m 46s -18° 57’ 29” 48.12 Libra
2019 Sep 19 15h 24m 51s -18° 57’ 44” 48.12 Libra
2019 Sep 20 15h 24m 57s -18° 58’ 01” 48.12 Libra
2019 Sep 21 15h 25m 04s -18° 58’ 19” 48.12 Libra