Comet 398P/Boattini
Comet 398P/Boattini is in the constellation of
Capricornus,
at a distance of
Finder Charts
View interactive star map
High 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.


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.
Celestial Coordinates
Apparent
J2000
Additional Information
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
Today's rise, transit and set times of Comet 398P/Boattini from Greenwich, UK (all times relative to the local timezone Europe/London):
- 398P/Boattini is above the horizon from Greenwich, UK.
- Right now it is placed in the South direction at an altitude of 20.44° above the horizon.
- Given its current magnitude, 398P/Boattini is visible only through long exposure photography.
- Go to interactive sky chart
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Distance from Earth
The distance of Comet 398P/Boattini from Earth is currently
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.
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
Between 1 January 2000 and 31 December 2099, the closest approach of Comet 398P/Boattini to Earth happens on Wed Dec 23 2020 at a distance of 0.375438 Astronomical Units, or 56,164,772 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
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.
Orbital Elements
The following table lists the orbital elements of Comet 398P/Boattini at epoch 16 December 2020 00:00 UTC (JD: 2459200.5). Source: JPL Small-Body Database
Element | Symbol | Value |
---|---|---|
Orbit eccentricity | e | 0.58256817 |
Orbit inclination | i | 11.01527054° |
Perihelion distance | q | 1.30569341 AU 195,328,954 km |
Aphelion distance | Q |
4.95014681 AU 740,531,424 km |
Semi-major axis | a |
3.12792011 AU 467,930,189 km |
Orbital period | period |
5.5321 years 2,020.6072 days |
Date of perihelion transit | Tp | 2020-Dec-26 17:51:58 2,459,210.2444 JD |
Next perihelion transit | 2026-Jul-09 08:26 2,461,230.8517 JD |
|
Argument of perihelion | peri | 320.23471164812° |
Longitude of the ascending node | node | 127.46296718978° |
Mean anomaly | M | 358.26389165887° |
Mean motion | n | 0.17816426°/day |
Orbit Visualization
View Comet 398P/Boattini in the 3D Solar System Simulator
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. Apparent celestial coordinates are provided.
Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
---|---|---|---|---|
2025 Feb 07 | 20h 24m 39s | -18° 08’ 27” | 25.18 | Capricornus |
2025 Feb 08 | 20h 25m 45s | -18° 05’ 27” | 25.18 | Capricornus |
2025 Feb 09 | 20h 26m 51s | -18° 02’ 25” | 25.17 | Capricornus |
2025 Feb 10 | 20h 27m 55s | -17° 59’ 22” | 25.16 | Capricornus |
2025 Feb 11 | 20h 29m 01s | -17° 56’ 18” | 25.15 | Capricornus |
2025 Feb 12 | 20h 30m 06s | -17° 53’ 12” | 25.14 | Capricornus |
2025 Feb 13 | 20h 31m 12s | -17° 50’ 05” | 25.14 | Capricornus |
2025 Feb 14 | 20h 32m 17s | -17° 46’ 56” | 25.13 | Capricornus |
2025 Feb 15 | 20h 33m 22s | -17° 43’ 46” | 25.12 | Capricornus |
2025 Feb 16 | 20h 34m 27s | -17° 40’ 36” | 25.11 | Capricornus |
2025 Feb 17 | 20h 35m 33s | -17° 37’ 23” | 25.10 | Capricornus |
2025 Feb 18 | 20h 36m 37s | -17° 34’ 10” | 25.09 | Capricornus |
2025 Feb 19 | 20h 37m 42s | -17° 30’ 57” | 25.09 | Capricornus |
2025 Feb 20 | 20h 38m 47s | -17° 27’ 42” | 25.08 | Capricornus |
Additional Resources
- Position and finder charts (see also Where is Comet 398P/Boattini?)
- Distance from Earth (see also How far is Comet 398P/Boattini from Earth?)
- When does Comet 398P/Boattini rise and set?
- Brightness (see also How bright is Comet 398P/Boattini?)
- Orbital elements. Detailed information about Comet 398P/Boattini orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Comet 398P/Boattini with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet 398P/Boattini for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet 398P/Boattini in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet 398P/Boattini with your telescope or on your astrophotographies.