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Comet 153P/Ikeya-Zhang

Comet 153P/Ikeya-Zhang is currently in the constellation of Sagittarius. The current Right Ascension of Comet 153P/Ikeya-Zhang is 20h 02m 36s and the Declination is -31° 45’ 38” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 153P/Ikeya-Zhang is 35.21 (JPL).

Summary of key facts about Comet 153P/Ikeya-Zhang [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

20h 02m 36s
-31° 45’ 38”

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.

Additional information about Comet 153P/Ikeya-Zhang available on TheSkyLive:

Available Resources

Comet 153P/Ikeya-Zhang Position and Finder Charts

Below we provide Comet 153P/Ikeya-Zhang finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet 153P/Ikeya-Zhang in Sagittarius on May, 06 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 153P/Ikeya-Zhang in Sagittarius on May, 06 2021
Field of view: 10x6 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]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 153P/Ikeya-Zhang is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 20h 02m 36s
Dec: -31° 45’ 38”
Deep sky finder chart for Comet 153P/Ikeya-Zhang
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 153P/Ikeya-Zhang?, a page that provides all the information needed to find Comet 153P/Ikeya-Zhang in the sky and additional links to sky charts.

Comet 153P/Ikeya-Zhang Distance from Earth

The distance of Comet 153P/Ikeya-Zhang from Earth is currently 5,398,040,577 kilometers, equivalent to 36.083673 Astronomical Units. Light takes 5 hours, 5.9252 seconds to travel from Comet 153P/Ikeya-Zhang and arrive to us.

5 hours, 5.9252 seconds

The following chart shows the distance of Comet 153P/Ikeya-Zhang 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 153P/Ikeya-Zhang 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 153P/Ikeya-Zhang from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 153P/Ikeya-Zhang to Earth

Between January 2013 and December 2100, the closest approach of Comet 153P/Ikeya-Zhang to Earth happens on Sun Jun 30 2013 at a distance of 25.198931 Astronomical Units, or 3,769,706,411 kilometers:

Sun Jun 30 2013

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

Comet 153P/Ikeya-Zhang brightness

The current visual magnitude of Comet 153P/Ikeya-Zhang is 35.21.


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 behavior 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 153P/Ikeya-Zhang, 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 153P/Ikeya-Zhang between January 2013 and December 2100

Comet 153P/Ikeya-Zhang 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 153P/Ikeya-Zhang rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 121.8°
Max altitude: 6.8°
Azimuth: 238.2°

The rise and set times are defined as the time at which the upper limb of Comet 153P/Ikeya-Zhang touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 153P/Ikeya-Zhang Orbital Elements

The following table lists the orbital elements of Comet 153P/Ikeya-Zhang at epoch 07 May 2002 00:00 UTC (JD: 2452402.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99008066
Orbit inclination i 28.12095741°
Perihelion distance q 0.50707009 AU
75,856,606 km
Aphelion distance Q 101.73157425 AU
15,218,826,921 km
Semi-major axis a 51.11932217 AU
7,647,341,763 km
Orbital period period 365.5000 years
133,498.3988 days
Date of perihelion transit Tp 2002-Mar-18 23:31:25
2,452,352.4802 JD
Next perihelion transit 2367-Sep-20 09:05
2,585,850.8789 JD
Argument of perihelion peri 34.668178657425°
Longitude of the ascending node node 93.369456618754°
Mean anomaly M 0.1348865811518°
Mean motion n 0.00269666°/day

Visualization of Comet 153P/Ikeya-Zhang Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 153P/Ikeya-Zhang with respect of the Sun and the orbits of the major planets. The position of Comet 153P/Ikeya-Zhang 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 153P/Ikeya-Zhang
View Comet 153P/Ikeya-Zhang in the 3D Solar System Simulator

Comet 153P/Ikeya-Zhang 15 Days Ephemeris

The following table lists the ephemerides of Comet 153P/Ikeya-Zhang computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 153P/Ikeya-Zhang in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Apr 29 20h 02m 47s -31° 42’ 43” 35.21 Sagittarius
2021 Apr 30 20h 02m 45s -31° 43’ 06” 35.21 Sagittarius
2021 May 01 20h 02m 44s -31° 43’ 30” 35.21 Sagittarius
2021 May 02 20h 02m 44s -31° 43’ 53” 35.21 Sagittarius
2021 May 03 20h 02m 42s -31° 44’ 16” 35.21 Sagittarius
2021 May 04 20h 02m 40s -31° 44’ 39” 35.21 Sagittarius
2021 May 05 20h 02m 39s -31° 45’ 03” 35.21 Sagittarius
2021 May 06 20h 02m 36s -31° 45’ 29” 35.21 Sagittarius
2021 May 07 20h 02m 35s -31° 45’ 52” 35.21 Sagittarius
2021 May 08 20h 02m 33s -31° 46’ 18” 35.21 Sagittarius
2021 May 09 20h 02m 30s -31° 46’ 42” 35.21 Sagittarius
2021 May 10 20h 02m 29s -31° 47’ 08” 35.21 Sagittarius
2021 May 11 20h 02m 26s -31° 47’ 34” 35.21 Sagittarius
2021 May 12 20h 02m 23s -31° 47’ 58” 35.21 Sagittarius