Comet C/2023 X2 (Lemmon)

Comet C/2023 X2 (Lemmon) is in the constellation of Camelopardalis, at a distance of 915,073,675.0 kilometers from Earth. The current Right Ascension is 04h 51m 41s and the Declination is +56° 45’ 11” (apparent coordinates). The predicted magnitude of Comet C/2023 X2 (Lemmon) is 18.73 (data provided by JPL Horizons).

Finder Charts

High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2023 X2 (Lemmon) is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet C/2023 X2 (Lemmon)?, a page that provides all the information needed to find Comet C/2023 X2 (Lemmon) 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 C/2023 X2 (Lemmon) from Greenwich, UK (all times relative to the local timezone Europe/London):

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 C/2023 X2 (Lemmon) from Earth is currently 915,073,675.0 kilometers, equivalent to 6.1168897038 Astronomical Units. Light takes 50m 52.357s to travel from Comet C/2023 X2 (Lemmon) and arrive to us.

The following chart shows the distance of Comet C/2023 X2 (Lemmon) 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 C/2023 X2 (Lemmon) 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 C/2023 X2 (Lemmon) to Earth happens on Thu Dec 11 2025 at a distance of 4.685871 Astronomical Units, or 700,996,300 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 C/2023 X2 (Lemmon), 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.

15 Days Ephemeris

The following table lists the ephemerides of Comet C/2023 X2 (Lemmon) 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 Jun 06	04h 42m 44s	+55° 54’ 13”	18.75	Camelopardalis
2025 Jun 07	04h 43m 57s	+56° 01’ 06”	18.74	Camelopardalis
2025 Jun 08	04h 45m 11s	+56° 08’ 03”	18.74	Camelopardalis
2025 Jun 09	04h 46m 24s	+56° 15’ 02”	18.74	Camelopardalis
2025 Jun 10	04h 47m 38s	+56° 22’ 05”	18.74	Camelopardalis
2025 Jun 11	04h 48m 53s	+56° 29’ 10”	18.73	Camelopardalis
2025 Jun 12	04h 50m 08s	+56° 36’ 18”	18.73	Camelopardalis
2025 Jun 13	04h 51m 23s	+56° 43’ 30”	18.73	Camelopardalis
2025 Jun 14	04h 52m 39s	+56° 50’ 43”	18.72	Camelopardalis
2025 Jun 15	04h 53m 55s	+56° 58’ 00”	18.72	Camelopardalis
2025 Jun 16	04h 55m 12s	+57° 05’ 19”	18.72	Camelopardalis
2025 Jun 17	04h 56m 29s	+57° 12’ 42”	18.71	Camelopardalis
2025 Jun 18	04h 57m 46s	+57° 20’ 08”	18.71	Camelopardalis
2025 Jun 19	04h 59m 04s	+57° 27’ 36”	18.71	Camelopardalis

Additional Resources on TheSkyLive

• Comet C/2023 X2 (Lemmon): Complete reference information on TheSkyLive.com.
• Where is Comet C/2023 X2 (Lemmon)?: Key information on locating Comet C/2023 X2 (Lemmon) in the sky.
• Distance from Earth: Find out how far Comet C/2023 X2 (Lemmon) is from Earth right now.
• How Bright is Comet C/2023 X2 (Lemmon)?: Current visual brightness (magnitude) and apparent size.
• Rise and Set Times: Comet C/2023 X2 (Lemmon)'s rise and set times from your location.
• Interactive Sky Map: planetarium-style interactive visualization of Comet C/2023 X2 (Lemmon)'s position in the sky.
• Live Position Tracker: high precision position tracker with deep space imagery.
• Ephemeris: 15 days Comet C/2023 X2 (Lemmon)'s computed ephemeris.
• Orbital elements: information about Comet C/2023 X2 (Lemmon) orbital parameters.
• Orbit Visualization. 3d interactive visualization showing the orbit of Comet C/2023 X2 (Lemmon) with respect to the major Solar System objects.