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Comet 398P/Boattini

Comet 398P/Boattini is currently in the constellation of Gemini. The current Right Ascension of Comet 398P/Boattini is 06h 53m 20s and the Declination is +26° 32’ 04” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 398P/Boattini is 16.40 (JPL) while the latest observed magnitude is 14.6 (COBS).

Summary of key facts about Comet 398P/Boattini [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]:

06h 53m 20s
+26° 32’ 04”

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Additional information about Comet 398P/Boattini available on TheSkyLive:

Available Resources

Comet 398P/Boattini Position and Finder Charts

Below we provide Comet 398P/Boattini 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 398P/Boattini in Gemini on March, 01 2021
Field of view: 50x30 degrees
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Map showing Comet 398P/Boattini in Gemini on March, 01 2021
Field of view: 10x6 degrees
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 = 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 398P/Boattini is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 06h 53m 20s
Dec: +26° 32’ 04”
Deep sky finder chart for Comet 398P/Boattini
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 398P/Boattini?, a page that provides all the information needed to find Comet 398P/Boattini in the sky and additional links to sky charts.

Comet 398P/Boattini Distance from Earth

The distance of Comet 398P/Boattini from Earth is currently 107,576,614 kilometers, equivalent to 0.719105 Astronomical Units. Light takes 5 minutes and 58.8370 seconds to travel from Comet 398P/Boattini and arrive to us.

5 minutes and 58.8370 seconds

The following chart shows the distance of Comet 398P/Boattini 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 398P/Boattini from Earth between January 2014 and January 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 398P/Boattini from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 398P/Boattini to Earth

Between January 2014 and January 2100, the closest approach of Comet 398P/Boattini to Earth happens on Wed Dec 23 2020 at a distance of 0.375443 Astronomical Units, or 56,165,460 kilometers:

Wed Dec 23 2020

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

Comet 398P/Boattini brightness

The current visual magnitude of Comet 398P/Boattini is 16.40.


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 398P/Boattini, 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 398P/Boattini between January 2014 and January 2100

Comet 398P/Boattini 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 398P/Boattini rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 63.5°
Max altitude: 65.1°
Azimuth: 296.5°

The rise and set times are defined as the time at which the upper limb of Comet 398P/Boattini 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 398P/Boattini Orbital Elements

The following table lists the orbital elements of Comet 398P/Boattini at epoch 11 September 2015 00:00 UTC (JD: 2457277.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.58008406
Orbit inclination i 10.98066781°
Perihelion distance q 1.31697006 AU
197,015,917 km
Aphelion distance Q 4.95557128 AU
741,342,913 km
Semi-major axis a 3.13627067 AU
469,179,415 km
Orbital period period 5.5500 years
2,028.7042 days
Date of perihelion transit Tp 2015-Jun-13 04:24:37
2,457,186.6838 JD
Next perihelion transit 2020-Dec-31 21:18
2,459,215.3880 JD
Argument of perihelion peri 320.13120216726°
Longitude of the ascending node node 127.5968752769°
Mean anomaly M 16.115629162505°
Mean motion n 0.17745317°/day

Visualization of Comet 398P/Boattini Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 398P/Boattini with respect of the Sun and the orbits of the major planets. The position of Comet 398P/Boattini 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 398P/Boattini
View Comet 398P/Boattini in the 3D Solar System Simulator

Comet 398P/Boattini 15 Days Ephemeris

The following table lists the ephemerides of Comet 398P/Boattini computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 398P/Boattini in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Feb 22 06h 33m 52s +25° 05’ 22” 16.06 Gemini
2021 Feb 23 06h 36m 29s +25° 18’ 59” 16.10 Gemini
2021 Feb 24 06h 39m 06s +25° 31’ 58” 16.15 Gemini
2021 Feb 25 06h 41m 42s +25° 44’ 20” 16.20 Gemini
2021 Feb 26 06h 44m 18s +25° 56’ 07” 16.24 Gemini
2021 Feb 27 06h 46m 55s +26° 07’ 18” 16.29 Gemini
2021 Feb 28 06h 49m 32s +26° 17’ 53” 16.34 Gemini
2021 Mar 01 06h 52m 09s +26° 27’ 56” 16.38 Gemini
2021 Mar 02 06h 54m 46s +26° 37’ 23” 16.43 Gemini
2021 Mar 03 06h 57m 21s +26° 46’ 18” 16.48 Gemini
2021 Mar 04 06h 59m 58s +26° 54’ 42” 16.52 Gemini
2021 Mar 05 07h 02m 35s +27° 02’ 34” 16.57 Gemini
2021 Mar 06 07h 05m 11s +27° 09’ 53” 16.62 Gemini
2021 Mar 07 07h 07m 46s +27° 16’ 44” 16.67 Gemini