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public  Zuidlaren, Netherlands Zuidlaren, Netherlands  ⓘ
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Sunrise: 5:28 
Transit: 13:39 
Sunset: 21:49
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Comets » 

Comet 10P/Tempel

Below the horizon.  Rise: 10:12 | Tran: 17:25 | Set: 0:37
Alt: -13.17°   Az: 315.36°   Direction: North-West

Comet 10P/Tempel is in the constellation of Leo, at a distance of 575,869,851.0 kilometers from Earth. The current Right Ascension is 11h 30m 10s and the Declination is +13° 31’ 27” (apparent coordinates). The estimated magnitude of comet 10P/Tempel, computed using JPL Horizons's data, is 19.86.

Finder Charts

The sky charts below show, at different resolutions, the position of comet 10P/Tempel in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet 10P/Tempel in the constellation of Leo on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet 10P/Tempel in the constellation of Leo on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet 10P/Tempel against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

10P/Tempel
RA: 11h 28m 50s
Dec: +13° 39’ 54”
Simplified high-resolution deep sky chart showing the current position of comet 10P/Tempel. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

11h 30m 10s
+13° 31’ 27”
09h 01m 06s
20h 31m 17s

J2000

11h 28m 50s
+13° 39’ 54”

Additional Information

Leo
n/a
n/a
n/a
n/a
19.86

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Rise and Set Times

The following table lists today's rise, transit and set times of comet 10P/Tempel from Zuidlaren, Netherlands (all times relative to the local timezone Europe/Amsterdam):

Azimuth: 76.5°
Max altitude: 50.4°
Azimuth: 283.4°

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Distance from Earth

The distance of comet 10P/Tempel from Earth is currently 575,869,851.0 kilometers, equivalent to 3.8494521901 Astronomical Units. Light takes 32m 0.895s to travel from comet 10P/Tempel and arrive to us.

575,869,851.0
3.8494521901
32m 0.895s

The following graph shows the distance of comet 10P/Tempel from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet 10P/Tempel from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of 10P/Tempel from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet 10P/Tempel to Earth will happen on Tuesday 4 August 2026 at a distance of 0.414485 Astronomical Units, or 62,006,142 kilometers:

Tuesday 4 August 2026
62,006,142
0.414485

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

Light Curve

The following chart shows the light curve of comet 10P/Tempel, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of comet 10P/Tempel as a function of time

Orbital Elements

The following table lists the orbital elements of comet 10P/Tempel at epoch May, 12 2013 00:00 UTC (JD: 2456425.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.53640358
Orbit inclination i 12.02725131°
Perihelion distance q 1.42083031 AU
212,553,190 km
Aphelion distance Q 4.70876967 AU
704,421,918 km
Semi-major axis a 3.06479999 AU
458,487,554 km
Orbital period period 5.3655 years
1,959.7543 days
Date of perihelion transit Tp November 15, 2015
2,457,341.5811 JD
Next perihelion transit March 27, 2021
2,459,301.3354 JD
Argument of perihelion peri 195.54140401041°
Longitude of the ascending node node 117.80297999279°
Mean anomaly M 191.7191212244°
Mean motion n 0.18369649°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet 10P/Tempel relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

15 Days Ephemeris

The following table lists the ephemerides of comet 10P/Tempel computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
Jul 09 2025 11h 24m 18s +14° 18’ 34” 19.85 Leo
Jul 10 2025 11h 25m 06s +14° 12’ 00” 19.85 Leo
Jul 11 2025 11h 25m 55s +14° 05’ 23” 19.86 Leo
Jul 12 2025 11h 26m 45s +13° 58’ 43” 19.86 Leo
Jul 13 2025 11h 27m 35s +13° 52’ 00” 19.86 Leo
Jul 14 2025 11h 28m 26s +13° 45’ 15” 19.86 Leo
Jul 15 2025 11h 29m 17s +13° 38’ 26” 19.86 Leo
Jul 16 2025 11h 30m 09s +13° 31’ 35” 19.86 Leo
Jul 17 2025 11h 31m 01s +13° 24’ 41” 19.86 Leo
Jul 18 2025 11h 31m 54s +13° 17’ 45” 19.86 Leo
Jul 19 2025 11h 32m 48s +13° 10’ 45” 19.86 Leo
Jul 20 2025 11h 33m 42s +13° 03’ 44” 19.86 Leo
Jul 21 2025 11h 34m 36s +12° 56’ 40” 19.87 Leo
Jul 22 2025 11h 35m 31s +12° 49’ 34” 19.87 Leo

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